diff --git a/UNITTESTS/stubs/AT_CellularContext_stub.cpp b/UNITTESTS/stubs/AT_CellularContext_stub.cpp
index f597601fe2..a99ea5e46b 100644
--- a/UNITTESTS/stubs/AT_CellularContext_stub.cpp
+++ b/UNITTESTS/stubs/AT_CellularContext_stub.cpp
@@ -116,11 +116,6 @@ nsapi_error_t AT_CellularContext::get_ip_address(SocketAddress *address)
     return NSAPI_ERROR_UNSUPPORTED;
 }
 
-const char *AT_CellularContext::get_ip_address()
-{
-    return NULL;
-}
-
 void AT_CellularContext::attach(Callback<void(nsapi_event_t, intptr_t)> status_cb)
 {
 }
diff --git a/UNITTESTS/stubs/NetworkInterface_stub.cpp b/UNITTESTS/stubs/NetworkInterface_stub.cpp
index 0a849d2497..a038c39d52 100644
--- a/UNITTESTS/stubs/NetworkInterface_stub.cpp
+++ b/UNITTESTS/stubs/NetworkInterface_stub.cpp
@@ -31,10 +31,6 @@ nsapi_error_t NetworkInterface::get_ip_address(SocketAddress *)
     return NSAPI_ERROR_UNSUPPORTED;
 }
 
-const char *NetworkInterface::get_ip_address()
-{
-    return nullptr;
-}
 nsapi_error_t NetworkInterface::get_ipv6_link_local_address(SocketAddress *address)
 {
     return NSAPI_ERROR_UNSUPPORTED;
@@ -45,31 +41,16 @@ nsapi_error_t NetworkInterface::get_netmask(SocketAddress *)
     return NSAPI_ERROR_UNSUPPORTED;
 }
 
-const char *NetworkInterface::get_netmask()
-{
-    return nullptr;
-}
-
 nsapi_error_t NetworkInterface::get_gateway(SocketAddress *)
 {
     return NSAPI_ERROR_UNSUPPORTED;
 }
 
-const char *NetworkInterface::get_gateway()
-{
-    return nullptr;
-}
-
 nsapi_error_t NetworkInterface::set_network(const SocketAddress &ip_address, const SocketAddress &netmask, const SocketAddress &gateway)
 {
     return NSAPI_ERROR_UNSUPPORTED;
 }
 
-nsapi_error_t NetworkInterface::set_network(const char *ip_address, const char *netmask, const char *gateway)
-{
-    return NSAPI_ERROR_UNSUPPORTED;
-}
-
 nsapi_error_t NetworkInterface::set_dhcp(bool dhcp)
 {
     return NSAPI_ERROR_UNSUPPORTED;
diff --git a/UNITTESTS/stubs/NetworkStack_stub.cpp b/UNITTESTS/stubs/NetworkStack_stub.cpp
index e6b7a431c7..664a8a60dd 100644
--- a/UNITTESTS/stubs/NetworkStack_stub.cpp
+++ b/UNITTESTS/stubs/NetworkStack_stub.cpp
@@ -104,11 +104,6 @@ nsapi_error_t NetworkStack::get_ip_address(SocketAddress* address)
     return NSAPI_ERROR_UNSUPPORTED;
 }
 
-const char *NetworkStack::get_ip_address()
-{
-    return NULL;
-}
-
 nsapi_error_t NetworkStack::get_ipv6_link_local_address(SocketAddress *address)
 {
     return NSAPI_ERROR_UNSUPPORTED;
@@ -118,8 +113,3 @@ nsapi_error_t NetworkStack::get_ip_address_if(SocketAddress* address, const char
 {
     return NSAPI_ERROR_UNSUPPORTED;
 }
-
-const char *NetworkStack::get_ip_address_if(const char *interface_name)
-{
-    return NULL;
-}
diff --git a/UNITTESTS/stubs/NetworkStack_stub.h b/UNITTESTS/stubs/NetworkStack_stub.h
index 2c5ffac236..916937e645 100644
--- a/UNITTESTS/stubs/NetworkStack_stub.h
+++ b/UNITTESTS/stubs/NetworkStack_stub.h
@@ -40,10 +40,6 @@ public:
     {
     }
 
-    virtual const char *get_ip_address()
-    {
-        return "127.0.0.1";
-    }
     virtual nsapi_error_t get_ip_address(SocketAddress* address)
     {
         address->set_ip_address("127.0.0.1");
diff --git a/components/wifi/esp8266-driver/ESP8266Interface.cpp b/components/wifi/esp8266-driver/ESP8266Interface.cpp
index ce31c41a39..b9be381f93 100644
--- a/components/wifi/esp8266-driver/ESP8266Interface.cpp
+++ b/components/wifi/esp8266-driver/ESP8266Interface.cpp
@@ -507,22 +507,6 @@ int ESP8266Interface::disconnect()
     }
 }
 
-const char *ESP8266Interface::get_ip_address()
-{
-    if (_software_conn_stat == IFACE_STATUS_DISCONNECTED) {
-        _esp.uart_enable_input(true);
-    }
-
-    const char *ip_buff = _esp.ip_addr();
-    if (!ip_buff || strcmp(ip_buff, "0.0.0.0") == 0) {
-        ip_buff = NULL;
-    }
-    if (_software_conn_stat == IFACE_STATUS_DISCONNECTED) {
-        _esp.uart_enable_input(false);
-    }
-    return ip_buff;
-}
-
 nsapi_error_t ESP8266Interface::get_ip_address(SocketAddress *address)
 {
     if (_software_conn_stat == IFACE_STATUS_DISCONNECTED) {
diff --git a/components/wifi/esp8266-driver/ESP8266Interface.h b/components/wifi/esp8266-driver/ESP8266Interface.h
index 0d20ed704e..764081da05 100644
--- a/components/wifi/esp8266-driver/ESP8266Interface.h
+++ b/components/wifi/esp8266-driver/ESP8266Interface.h
@@ -141,9 +141,6 @@ public:
      */
     virtual nsapi_error_t get_ip_address(SocketAddress *address);
 
-    MBED_DEPRECATED_SINCE("mbed-os-5.15", "String-based APIs are deprecated")
-    virtual const char *get_ip_address();
-
     /** Get the internally stored MAC address
      *  @return             MAC address of the interface
      */
diff --git a/features/cellular/framework/API/CellularContext.h b/features/cellular/framework/API/CellularContext.h
index 1f3b4a7522..03569215f4 100644
--- a/features/cellular/framework/API/CellularContext.h
+++ b/features/cellular/framework/API/CellularContext.h
@@ -122,8 +122,6 @@ public: // from NetworkInterface
     virtual nsapi_error_t set_blocking(bool blocking) = 0;
     virtual NetworkStack *get_stack() = 0;
     virtual nsapi_error_t get_ip_address(SocketAddress *address) = 0;
-    MBED_DEPRECATED_SINCE("mbed-os-5.15", "String-based APIs are deprecated")
-    virtual const char *get_ip_address() = 0;
 
     /** Register callback for status reporting.
      *
diff --git a/features/cellular/framework/AT/AT_CellularContext.cpp b/features/cellular/framework/AT/AT_CellularContext.cpp
index 575094de16..dd9fa678d9 100644
--- a/features/cellular/framework/AT/AT_CellularContext.cpp
+++ b/features/cellular/framework/AT/AT_CellularContext.cpp
@@ -233,21 +233,6 @@ nsapi_error_t AT_CellularContext::get_ip_address(SocketAddress *address)
 #endif
 }
 
-const char *AT_CellularContext::get_ip_address()
-{
-#if NSAPI_PPP_AVAILABLE
-    return nsapi_ppp_get_ip_addr(_at.get_file_handle());
-#else
-    if (!_stack) {
-        _stack = get_stack();
-    }
-    if (_stack) {
-        return _stack->get_ip_address();
-    }
-    return NULL;
-#endif
-}
-
 char *AT_CellularContext::get_interface_name(char *interface_name)
 {
     if (_cid < 0) {
diff --git a/features/cellular/framework/AT/AT_CellularContext.h b/features/cellular/framework/AT/AT_CellularContext.h
index 49c425ca83..72c0d0f931 100644
--- a/features/cellular/framework/AT/AT_CellularContext.h
+++ b/features/cellular/framework/AT/AT_CellularContext.h
@@ -35,7 +35,6 @@ public:
     virtual nsapi_error_t set_blocking(bool blocking);
     virtual NetworkStack *get_stack();
     virtual nsapi_error_t get_ip_address(SocketAddress *address);
-    virtual const char *get_ip_address();
     virtual char *get_interface_name(char *interface_name);
     virtual void attach(mbed::Callback<void(nsapi_event_t, intptr_t)> status_cb);
     virtual nsapi_error_t connect();
diff --git a/features/cellular/framework/targets/UBLOX/AT/UBLOX_AT_CellularContext.cpp b/features/cellular/framework/targets/UBLOX/AT/UBLOX_AT_CellularContext.cpp
index 309589d22e..77c1cb7d10 100644
--- a/features/cellular/framework/targets/UBLOX/AT/UBLOX_AT_CellularContext.cpp
+++ b/features/cellular/framework/targets/UBLOX/AT/UBLOX_AT_CellularContext.cpp
@@ -299,11 +299,6 @@ void UBLOX_AT_CellularContext::get_next_credentials(char **config)
     }
 }
 
-const char *UBLOX_AT_CellularContext::get_gateway()
-{
-    return get_ip_address();
-}
-
 nsapi_error_t UBLOX_AT_CellularContext::get_gateway(SocketAddress *addr)
 {
     return get_ip_address(addr);
diff --git a/features/cellular/framework/targets/UBLOX/AT/UBLOX_AT_CellularContext.h b/features/cellular/framework/targets/UBLOX/AT/UBLOX_AT_CellularContext.h
index 10198a26e5..4e2272d42f 100644
--- a/features/cellular/framework/targets/UBLOX/AT/UBLOX_AT_CellularContext.h
+++ b/features/cellular/framework/targets/UBLOX/AT/UBLOX_AT_CellularContext.h
@@ -28,7 +28,6 @@ public:
     virtual ~UBLOX_AT_CellularContext();
 
     virtual void do_connect();
-    virtual const char *get_gateway();
     virtual nsapi_error_t get_gateway(SocketAddress *addr);
 
     const char *get_apn(void);
diff --git a/features/netsocket/CellularInterface.h b/features/netsocket/CellularInterface.h
index d77c532bc7..647a523b84 100644
--- a/features/netsocket/CellularInterface.h
+++ b/features/netsocket/CellularInterface.h
@@ -98,9 +98,6 @@ public:
     /** @copydoc NetworkInterface::get_ip_address */
     virtual nsapi_error_t get_ip_address(SocketAddress *address) = 0;
 
-    MBED_DEPRECATED_SINCE("mbed-os-5.15", "String-based APIs are deprecated")
-    virtual const char *get_ip_address() = 0;
-
     /** @copydoc NetworkInterface::cellularInterface
      */
     virtual CellularInterface *cellularInterface()
diff --git a/features/netsocket/DTLSSocket.cpp b/features/netsocket/DTLSSocket.cpp
index 5bb2f3d811..eaf6dc559f 100644
--- a/features/netsocket/DTLSSocket.cpp
+++ b/features/netsocket/DTLSSocket.cpp
@@ -23,31 +23,6 @@
 // This class requires Mbed TLS SSL/TLS client code
 #if defined(MBEDTLS_SSL_CLI_C)
 
-nsapi_error_t DTLSSocket::connect(const char *host, uint16_t port)
-{
-    SocketAddress addr;
-    nsapi_error_t ret;
-
-    ret = _udp_socket.getpeername(&addr);
-    if (ret != NSAPI_ERROR_NO_CONNECTION) {
-        return ret;
-    }
-
-    if (!addr || ret == NSAPI_ERROR_NO_CONNECTION) {
-        nsapi_error_t err = _udp_socket._stack->gethostbyname(host, &addr);
-        if (err) {
-            return NSAPI_ERROR_DNS_FAILURE;
-        }
-
-        addr.set_port(port);
-
-        set_hostname(host);
-        _udp_socket.connect(addr); // UDPSocket::connect() cannot fail
-    }
-
-    return connect(addr);
-}
-
 DTLSSocket::~DTLSSocket()
 {
     // Make sure that DTLSSocketWrapper::close() is called before the transport is
diff --git a/features/netsocket/DTLSSocket.h b/features/netsocket/DTLSSocket.h
index 66252a6cff..45de541ae4 100644
--- a/features/netsocket/DTLSSocket.h
+++ b/features/netsocket/DTLSSocket.h
@@ -87,19 +87,6 @@ public:
 
     using DTLSSocketWrapper::connect;
 
-    /** Connects TCP socket to a remote host.
-     *
-     *  Initiates a connection to a remote server specified by either
-     *  a domain name or an IP address and a port.
-     *
-     *  @param host     Hostname of the remote host.
-     *  @param port     Port of the remote host.
-     *  @return         NSAPI_ERROR_OK on success, negative error code on failure.
-     *                  See @ref TLSSocketWrapper::connect.
-     */
-    MBED_DEPRECATED_SINCE("mbed-os-5.15", "String-based APIs are deprecated")
-    nsapi_error_t connect(const char *host, uint16_t port);
-
 private:
     UDPSocket _udp_socket;
 };
diff --git a/features/netsocket/EMACInterface.cpp b/features/netsocket/EMACInterface.cpp
index 275ac601bf..240ca754a3 100644
--- a/features/netsocket/EMACInterface.cpp
+++ b/features/netsocket/EMACInterface.cpp
@@ -31,20 +31,6 @@ EMACInterface::EMACInterface(EMAC &emac, OnboardNetworkStack &stack) :
 {
 }
 
-nsapi_error_t EMACInterface::set_network(const char *ip_address, const char *netmask, const char *gateway)
-{
-    _dhcp = false;
-
-    strncpy(_ip_address, ip_address ? ip_address : "", sizeof(_ip_address));
-    _ip_address[sizeof(_ip_address) - 1] = '\0';
-    strncpy(_netmask, netmask ? netmask : "", sizeof(_netmask));
-    _netmask[sizeof(_netmask) - 1] = '\0';
-    strncpy(_gateway, gateway ? gateway : "", sizeof(_gateway));
-    _gateway[sizeof(_gateway) - 1] = '\0';
-
-    return NSAPI_ERROR_OK;
-}
-
 nsapi_error_t EMACInterface::set_network(const SocketAddress &ip_address, const SocketAddress &netmask, const SocketAddress &gateway)
 {
     _dhcp = false;
@@ -110,14 +96,6 @@ nsapi_error_t EMACInterface::get_ip_address(SocketAddress *address)
     return NSAPI_ERROR_NO_CONNECTION;
 }
 
-const char *EMACInterface::get_ip_address()
-{
-    if (_interface && _interface->get_ip_address(_ip_address, sizeof(_ip_address))) {
-        return _ip_address;
-    }
-    return nullptr;
-}
-
 nsapi_error_t EMACInterface::get_ipv6_link_local_address(SocketAddress *address)
 {
     if (_interface) {
@@ -137,14 +115,6 @@ nsapi_error_t EMACInterface::get_netmask(SocketAddress *address)
     return NSAPI_ERROR_NO_CONNECTION;
 }
 
-const char *EMACInterface::get_netmask()
-{
-    if (_interface && _interface->get_netmask(_netmask, sizeof(_netmask))) {
-        return _netmask;
-    }
-    return nullptr;
-}
-
 nsapi_error_t EMACInterface::get_gateway(SocketAddress *address)
 {
     if (_interface && _interface->get_gateway(address) == NSAPI_ERROR_OK) {
@@ -156,14 +126,6 @@ nsapi_error_t EMACInterface::get_gateway(SocketAddress *address)
     return NSAPI_ERROR_NO_CONNECTION;
 }
 
-const char *EMACInterface::get_gateway()
-{
-    if (_interface && _interface->get_gateway(_gateway, sizeof(_gateway))) {
-        return _gateway;
-    }
-    return nullptr;
-}
-
 char *EMACInterface::get_interface_name(char *interface_name)
 {
     if (_interface) {
diff --git a/features/netsocket/EMACInterface.h b/features/netsocket/EMACInterface.h
index 70e6aef12a..d021daa6ed 100644
--- a/features/netsocket/EMACInterface.h
+++ b/features/netsocket/EMACInterface.h
@@ -66,9 +66,6 @@ public:
      */
     virtual nsapi_error_t set_network(const SocketAddress &ip_address, const SocketAddress &netmask, const SocketAddress &gateway);
 
-    MBED_DEPRECATED_SINCE("mbed-os-5.15", "String-based APIs are deprecated")
-    virtual nsapi_error_t set_network(const char *ip_address, const char *netmask, const char *gateway);
-
     /** Enable or disable DHCP on the network
      *
      *  Requires that the network is disconnected
@@ -91,25 +88,15 @@ public:
     /** @copydoc NetworkInterface::get_ip_address */
     virtual nsapi_error_t get_ip_address(SocketAddress *address);
 
-    MBED_DEPRECATED_SINCE("mbed-os-5.15", "String-based APIs are deprecated")
-    virtual const char *get_ip_address();
-
     /** @copydoc NetworkInterface::get_ipv6_link_local_address */
     virtual nsapi_error_t get_ipv6_link_local_address(SocketAddress *address);
 
     /** @copydoc NetworkInterface::get_netmask */
     virtual nsapi_error_t get_netmask(SocketAddress *address);
 
-    MBED_DEPRECATED_SINCE("mbed-os-5.15", "String-based APIs are deprecated")
-    virtual const char *get_netmask();
-
     /** @copydoc NetworkInterface::get_gateway */
     virtual nsapi_error_t get_gateway(SocketAddress *address);
 
-    /** @copydoc NetworkInterface::get_gateway */
-    MBED_DEPRECATED_SINCE("mbed-os-5.15", "String-based APIs are deprecated")
-    virtual const char *get_gateway();
-
     /** @copydoc NetworkInterface::get_interface_name */
     virtual char *get_interface_name(char *interface_name);
 
diff --git a/features/netsocket/InternetDatagramSocket.cpp b/features/netsocket/InternetDatagramSocket.cpp
index 7526a5e86c..3a6685d860 100644
--- a/features/netsocket/InternetDatagramSocket.cpp
+++ b/features/netsocket/InternetDatagramSocket.cpp
@@ -26,27 +26,6 @@ nsapi_error_t InternetDatagramSocket::connect(const SocketAddress &address)
     return NSAPI_ERROR_OK;
 }
 
-nsapi_size_or_error_t InternetDatagramSocket::sendto(const char *host, uint16_t port, const void *data, nsapi_size_t size)
-{
-    SocketAddress address;
-    nsapi_size_or_error_t err;
-
-    if (!strcmp(_interface_name, "")) {
-        err = _stack->gethostbyname(host, &address);
-    } else {
-        err = _stack->gethostbyname(host, &address, NSAPI_UNSPEC, _interface_name);
-    }
-
-    if (err) {
-        return NSAPI_ERROR_DNS_FAILURE;
-    }
-
-    address.set_port(port);
-
-    // sendto is thread safe
-    return sendto(address, data, size);
-}
-
 nsapi_size_or_error_t InternetDatagramSocket::sendto(const SocketAddress &address, const void *data, nsapi_size_t size)
 {
     _lock.lock();
diff --git a/features/netsocket/InternetDatagramSocket.h b/features/netsocket/InternetDatagramSocket.h
index cc9e40197f..3f8d3a5104 100644
--- a/features/netsocket/InternetDatagramSocket.h
+++ b/features/netsocket/InternetDatagramSocket.h
@@ -29,29 +29,6 @@
  */
 class InternetDatagramSocket : public InternetSocket {
 public:
-
-    /** Send data to the specified host and port.
-     *
-     *  By default, sendto blocks until data is sent. If socket is set to
-     *  nonblocking or times out, NSAPI_ERROR_WOULD_BLOCK is returned
-     *  immediately.
-     *
-     *  @param host     Domain name of the remote host or a dotted notation IP address.
-     *  @param port     Port of the remote host.
-     *  @param data     Buffer of data to send to the host.
-     *  @param size     Size of the buffer in bytes.
-     *  @retval         int Number of sent bytes on success.
-     *  @retval         NSAPI_ERROR_NO_SOCKET in case socket was not created correctly.
-     *  @retval         NSAPI_ERROR_DNS_FAILURE if the DNS address of host could not be resolved
-     *  @retval         NSAPI_ERROR_WOULD_BLOCK in case non-blocking mode is enabled
-     *                  and send cannot be performed immediately.
-     *  @retval         int Other negative error codes for stack-related failures.
-     *                  See @ref NetworkStack::socket_send.
-     */
-    MBED_DEPRECATED_SINCE("mbed-os-5.15", "String-based APIs are deprecated")
-    virtual nsapi_size_or_error_t sendto(const char *host, uint16_t port,
-                                         const void *data, nsapi_size_t size);
-
     /** Send data to the specified address.
      *
      *  By default, sendto blocks until data is sent. If socket is set to
diff --git a/features/netsocket/InternetSocket.cpp b/features/netsocket/InternetSocket.cpp
index 926ba8b335..2d3f06f7a3 100644
--- a/features/netsocket/InternetSocket.cpp
+++ b/features/netsocket/InternetSocket.cpp
@@ -127,13 +127,6 @@ nsapi_error_t InternetSocket::bind(uint16_t port)
     return bind(addr);
 }
 
-nsapi_error_t InternetSocket::bind(const char *address, uint16_t port)
-{
-    // Underlying bind is thread safe
-    SocketAddress addr(address, port);
-    return bind(addr);
-}
-
 nsapi_error_t InternetSocket::bind(const SocketAddress &address)
 {
     _lock.lock();
diff --git a/features/netsocket/InternetSocket.h b/features/netsocket/InternetSocket.h
index 3d803ef0f6..cc5e335f8a 100644
--- a/features/netsocket/InternetSocket.h
+++ b/features/netsocket/InternetSocket.h
@@ -96,19 +96,6 @@ public:
      */
     nsapi_error_t bind(uint16_t port);
 
-    /** Bind the socket to a specific address and port on which to receive
-     *  data. If the IP address is zeroed, only the port is bound.
-     *
-     *  @param address  Null-terminated local address to bind.
-     *  @param port     Local port to bind.
-     *  @retval         NSAPI_ERROR_OK on success.
-     *  @retval         NSAPI_ERROR_NO_SOCKET if socket is not open.
-     *  @retval         int negative error codes for stack-related failures.
-     *                  See @ref NetworkStack::socket_bind.
-     */
-    MBED_DEPRECATED_SINCE("mbed-os-5.15", "String-based APIs are deprecated")
-    nsapi_error_t bind(const char *address, uint16_t port);
-
     /** @copydoc Socket::bind
      */
     virtual nsapi_error_t bind(const SocketAddress &address);
diff --git a/features/netsocket/NetworkInterface.cpp b/features/netsocket/NetworkInterface.cpp
index 276a24fdc0..9a682904bb 100644
--- a/features/netsocket/NetworkInterface.cpp
+++ b/features/netsocket/NetworkInterface.cpp
@@ -37,11 +37,6 @@ nsapi_error_t NetworkInterface::get_ip_address(SocketAddress *)
     return NSAPI_ERROR_UNSUPPORTED;
 }
 
-const char *NetworkInterface::get_ip_address()
-{
-    return nullptr;
-}
-
 nsapi_error_t NetworkInterface::get_ipv6_link_local_address(SocketAddress *address)
 {
     return NSAPI_ERROR_UNSUPPORTED;
@@ -52,31 +47,16 @@ nsapi_error_t NetworkInterface::get_netmask(SocketAddress *)
     return NSAPI_ERROR_UNSUPPORTED;
 }
 
-const char *NetworkInterface::get_netmask()
-{
-    return nullptr;
-}
-
 nsapi_error_t NetworkInterface::get_gateway(SocketAddress *)
 {
     return NSAPI_ERROR_UNSUPPORTED;
 }
 
-const char *NetworkInterface::get_gateway()
-{
-    return nullptr;
-}
-
 char *NetworkInterface::get_interface_name(char *interface_name)
 {
     return 0;
 }
 
-nsapi_error_t NetworkInterface::set_network(const char *ip_address, const char *netmask, const char *gateway)
-{
-    return NSAPI_ERROR_UNSUPPORTED;
-}
-
 nsapi_error_t NetworkInterface::set_network(const SocketAddress &ip_address, const SocketAddress &netmask, const SocketAddress &gateway)
 {
     return NSAPI_ERROR_UNSUPPORTED;
diff --git a/features/netsocket/NetworkInterface.h b/features/netsocket/NetworkInterface.h
index a31f3ca65e..3ba5d46eac 100644
--- a/features/netsocket/NetworkInterface.h
+++ b/features/netsocket/NetworkInterface.h
@@ -110,9 +110,6 @@ public:
      */
     virtual nsapi_error_t get_ip_address(SocketAddress *address);
 
-    MBED_DEPRECATED_SINCE("mbed-os-5.15", "String-based APIs are deprecated")
-    virtual const char *get_ip_address();
-
     /** Get the IPv6 link local address
      *
      *  @param          address SocketAddress representation of the link local IPv6 address
@@ -132,9 +129,6 @@ public:
      */
     virtual nsapi_error_t get_netmask(SocketAddress *address);
 
-    MBED_DEPRECATED_SINCE("mbed-os-5.15", "String-based APIs are deprecated")
-    virtual const char *get_netmask();
-
     /** Get the local gateway.
      *
      *  @param          address SocketAddress representation of gateway address
@@ -145,9 +139,6 @@ public:
      */
     virtual nsapi_error_t get_gateway(SocketAddress *address);
 
-    MBED_DEPRECATED_SINCE("mbed-os-5.15", "String-based APIs are deprecated")
-    virtual const char *get_gateway();
-
     /** Get the network interface name
      *
      *  @return         Null-terminated representation of the network interface name
@@ -167,9 +158,6 @@ public:
      */
     virtual nsapi_error_t set_network(const SocketAddress &ip_address, const SocketAddress &netmask, const SocketAddress &gateway);
 
-    MBED_DEPRECATED_SINCE("mbed-os-5.15", "String-based APIs are deprecated")
-    virtual nsapi_error_t set_network(const char *ip_address, const char *netmask, const char *gateway);
-
     /** Enable or disable DHCP on connecting the network.
      *
      *  Enabled by default unless a static IP address has been assigned. Requires
diff --git a/features/netsocket/NetworkStack.cpp b/features/netsocket/NetworkStack.cpp
index 3c115e5060..ee34f0f950 100644
--- a/features/netsocket/NetworkStack.cpp
+++ b/features/netsocket/NetworkStack.cpp
@@ -29,11 +29,6 @@ nsapi_error_t NetworkStack::get_ip_address(SocketAddress *address)
     return NSAPI_ERROR_UNSUPPORTED;
 }
 
-const char *NetworkStack::get_ip_address()
-{
-    return nullptr;
-}
-
 nsapi_error_t NetworkStack::get_ipv6_link_local_address(SocketAddress *address)
 {
     return NSAPI_ERROR_UNSUPPORTED;
@@ -44,11 +39,6 @@ nsapi_error_t NetworkStack::get_ip_address_if(SocketAddress *address, const char
     return NSAPI_ERROR_UNSUPPORTED;
 }
 
-const char *NetworkStack::get_ip_address_if(const char *interface_name)
-{
-    return nullptr;
-}
-
 nsapi_error_t NetworkStack::gethostbyname(const char *name, SocketAddress *address, nsapi_version_t version, const char *interface_name)
 {
     if (name[0] == '\0') {
diff --git a/features/netsocket/NetworkStack.h b/features/netsocket/NetworkStack.h
index 0184cd83be..b0d50a7013 100644
--- a/features/netsocket/NetworkStack.h
+++ b/features/netsocket/NetworkStack.h
@@ -51,9 +51,6 @@ public:
      */
     virtual nsapi_error_t get_ip_address(SocketAddress *address);
 
-    MBED_DEPRECATED_SINCE("mbed-os-5.15", "String-based APIs are deprecated")
-    virtual const char *get_ip_address();
-
     /** Get the IPv6 link local address
      *
      *  @param          address SocketAddress representation of the link local IPv6 address
@@ -74,9 +71,6 @@ public:
      */
     virtual nsapi_error_t get_ip_address_if(SocketAddress *address, const char *interface_name);
 
-    MBED_DEPRECATED_SINCE("mbed-os-5.15", "String-based APIs are deprecated")
-    virtual const char *get_ip_address_if(const char *interface_name);
-
     /** Translates a hostname to an IP address with specific version
      *
      *  The hostname may be either a domain name or an IP address. If the
diff --git a/features/netsocket/OnboardNetworkStack.h b/features/netsocket/OnboardNetworkStack.h
index cf1c7aa47f..78a5484084 100644
--- a/features/netsocket/OnboardNetworkStack.h
+++ b/features/netsocket/OnboardNetworkStack.h
@@ -112,9 +112,6 @@ public:
         /** @copydoc NetworkStack::get_ip_address */
         virtual nsapi_error_t get_ip_address(SocketAddress *address) = 0;
 
-        MBED_DEPRECATED_SINCE("mbed-os-5.15", "String-based APIs are deprecated")
-        virtual char *get_ip_address(char *buf, nsapi_size_t buflen) = 0;
-
         /** @copydoc NetworkStack::get_ipv6_link_local_address */
         virtual nsapi_error_t get_ipv6_link_local_address(SocketAddress *address)
         {
@@ -124,14 +121,8 @@ public:
         /** @copydoc NetworkStack::get_netmask */
         virtual nsapi_error_t get_netmask(SocketAddress *address) = 0;
 
-        MBED_DEPRECATED_SINCE("mbed-os-5.15", "String-based APIs are deprecated")
-        virtual char *get_netmask(char *buf, nsapi_size_t buflen) = 0;
-
         /** @copydoc NetworkStack::get_gateway */
         virtual nsapi_error_t get_gateway(SocketAddress *address) = 0;
-
-        MBED_DEPRECATED_SINCE("mbed-os-5.15", "String-based APIs are deprecated")
-        virtual char *get_gateway(char *buf, nsapi_size_t buflen) = 0;
     };
 
     /** Register a network interface with the IP stack
diff --git a/features/netsocket/PPPInterface.cpp b/features/netsocket/PPPInterface.cpp
index e66321d780..9cd55716a5 100644
--- a/features/netsocket/PPPInterface.cpp
+++ b/features/netsocket/PPPInterface.cpp
@@ -83,15 +83,6 @@ nsapi_error_t PPPInterface::disconnect()
     return NSAPI_ERROR_NO_CONNECTION;
 }
 
-const char *PPPInterface::get_ip_address()
-{
-    if (_interface && _interface->get_ip_address(_ip_address, sizeof(_ip_address))) {
-        return _ip_address;
-    }
-
-    return NULL;
-}
-
 nsapi_error_t PPPInterface::get_ip_address(SocketAddress *address)
 {
     if (_interface && _interface->get_ip_address(address) == NSAPI_ERROR_OK) {
@@ -123,24 +114,6 @@ nsapi_error_t PPPInterface::get_gateway(SocketAddress *address)
     return NSAPI_ERROR_NO_CONNECTION;
 }
 
-const char *PPPInterface::get_netmask()
-{
-    if (_interface && _interface->get_netmask(_netmask, sizeof(_netmask))) {
-        return _netmask;
-    }
-
-    return 0;
-}
-
-const char *PPPInterface::get_gateway()
-{
-    if (_interface && _interface->get_gateway(_gateway, sizeof(_gateway))) {
-        return _gateway;
-    }
-
-    return 0;
-}
-
 char *PPPInterface::get_interface_name(char *interface_name)
 {
     if (_interface) {
diff --git a/features/netsocket/PPPInterface.h b/features/netsocket/PPPInterface.h
index a98c409d93..58189efc58 100644
--- a/features/netsocket/PPPInterface.h
+++ b/features/netsocket/PPPInterface.h
@@ -59,9 +59,6 @@ public:
     /** @copydoc NetworkInterface::disconnect */
     virtual nsapi_error_t disconnect();
 
-    /** @copydoc NetworkInterface::get_ip_address */
-    virtual const char *get_ip_address();
-
     /** @copydoc NetworkInterface::get_ip_address */
     virtual nsapi_error_t get_ip_address(SocketAddress *address);
 
@@ -71,12 +68,6 @@ public:
     /** @copydoc NetworkInterface::get_gateway */
     virtual nsapi_error_t get_gateway(SocketAddress *address);
 
-    /** @copydoc NetworkInterface::get_netmask */
-    virtual const char *get_netmask();
-
-    /** @copydoc NetworkInterface::get_gateway */
-    virtual const char *get_gateway();
-
     /** @copydoc NetworkInterface::get_interface_name */
     virtual char *get_interface_name(char *interface_name);
 
diff --git a/features/netsocket/TCPSocket.cpp b/features/netsocket/TCPSocket.cpp
index 02c29095f8..662021104d 100644
--- a/features/netsocket/TCPSocket.cpp
+++ b/features/netsocket/TCPSocket.cpp
@@ -104,28 +104,6 @@ nsapi_error_t TCPSocket::connect(const SocketAddress &address)
     return ret;
 }
 
-nsapi_error_t TCPSocket::connect(const char *host, uint16_t port)
-{
-    SocketAddress address;
-    if (!_socket) {
-        return NSAPI_ERROR_NO_SOCKET;
-    }
-    nsapi_error_t err;
-    if (!strcmp(_interface_name, "")) {
-        err = _stack->gethostbyname(host, &address);
-    } else {
-        err = _stack->gethostbyname(host, &address, NSAPI_UNSPEC, _interface_name);
-    }
-    if (err) {
-        return NSAPI_ERROR_DNS_FAILURE;
-    }
-
-    address.set_port(port);
-
-    // connect is thread safe
-    return connect(address);
-}
-
 nsapi_size_or_error_t TCPSocket::send(const void *data, nsapi_size_t size)
 {
     _lock.lock();
diff --git a/features/netsocket/TCPSocket.h b/features/netsocket/TCPSocket.h
index 113581190c..87df0d960f 100644
--- a/features/netsocket/TCPSocket.h
+++ b/features/netsocket/TCPSocket.h
@@ -70,24 +70,6 @@ public:
         return NSAPI_ERROR_UNSUPPORTED;
     }
 
-    /** Connects TCP socket to a remote host
-     *
-     *  Initiates a connection to a remote server specified by either
-     *  a domain name or an IP address and a port.
-     *
-     *  @param host     Hostname of the remote host
-     *  @param port     Port of the remote host
-     *  @retval         NSAPI_ERROR_OK on success
-     *  @retval         NSAPI_ERROR_IN_PROGRESS if the operation is ongoing
-     *  @retval         NSAPI_ERROR_NO_SOCKET if the socket has not been allocated
-     *  @retval         NSAPI_ERROR_DNS_FAILURE if the DNS address of host could not be resolved
-     *  @retval         NSAPI_ERROR_IS_CONNECTED if the connection is already established
-     *  @retval         int Other negative error codes for stack-related failures.
-     *                  See NetworkStack::socket_connect().
-     */
-    MBED_DEPRECATED_SINCE("mbed-os-5.15", "String-based APIs are deprecated")
-    nsapi_error_t connect(const char *host, uint16_t port);
-
     /** Connects TCP socket to a remote host
      *
      *  Initiates a connection to a remote server specified by the
diff --git a/features/netsocket/TLSSocket.cpp b/features/netsocket/TLSSocket.cpp
index 359613a98b..87ee46fa55 100644
--- a/features/netsocket/TLSSocket.cpp
+++ b/features/netsocket/TLSSocket.cpp
@@ -25,21 +25,6 @@
 // This class requires Mbed TLS SSL/TLS client code
 #if defined(MBEDTLS_SSL_CLI_C)
 
-nsapi_error_t TLSSocket::connect(const char *host, uint16_t port)
-{
-    nsapi_error_t ret = NSAPI_ERROR_OK;
-    if (!is_handshake_started()) {
-        ret = tcp_socket.connect(host, port);
-        if (ret == NSAPI_ERROR_OK || ret == NSAPI_ERROR_IN_PROGRESS) {
-            set_hostname(host);
-        }
-        if (ret != NSAPI_ERROR_OK && ret != NSAPI_ERROR_IS_CONNECTED) {
-            return ret;
-        }
-    }
-    return TLSSocketWrapper::start_handshake(ret == NSAPI_ERROR_OK);
-}
-
 TLSSocket::~TLSSocket()
 {
     /* Transport is a member of TLSSocket which is derived from TLSSocketWrapper.
@@ -91,15 +76,6 @@ nsapi_error_t TLSSocket::set_client_cert_key(const char *client_cert_pem, const
     return set_client_cert_key(client_cert_pem, strlen(client_cert_pem), client_private_key_pem, strlen(client_private_key_pem));
 }
 
-nsapi_error_t TLSSocket::connect(const char *host, uint16_t port)
-{
-    nsapi_error_t ret = enable_tlssocket();
-    if (ret == NSAPI_ERROR_OK) {
-        ret = TCPSocket::connect(host, port);
-    }
-    return ret;
-}
-
 nsapi_error_t TLSSocket::connect(const SocketAddress &address)
 {
     nsapi_error_t ret = enable_tlssocket();
diff --git a/features/netsocket/TLSSocket.h b/features/netsocket/TLSSocket.h
index 4fde00379a..c40cb34100 100644
--- a/features/netsocket/TLSSocket.h
+++ b/features/netsocket/TLSSocket.h
@@ -80,22 +80,6 @@ public:
 
     using TLSSocketWrapper::connect;
 
-    /** Connects TCP socket to a remote host.
-     *
-     *  Initiates a connection to a remote server specified by either
-     *  a domain name or an IP address and port.
-     *
-     *  @note: In case connect() returns NSAPI_ERROR_AUTH_FAILURE,
-     *  the socket must be freed either by calling close() or destroying it.
-     *
-     *  @param host     Hostname of the remote host.
-     *  @param port     Port of the remote host.
-     *  @return         NSAPI_ERROR_OK on success, negative error code on failure.
-     *                  See @ref TLSSocketWrapper::connect.
-     */
-    MBED_DEPRECATED_SINCE("mbed-os-5.15", "String-based APIs are deprecated")
-    nsapi_error_t connect(const char *host, uint16_t port);
-
 private:
     TCPSocket tcp_socket;
 };
diff --git a/features/netsocket/emac-drivers/TARGET_Cypress/COMPONENT_WHD/interface/CyDhcpServer.cpp b/features/netsocket/emac-drivers/TARGET_Cypress/COMPONENT_WHD/interface/CyDhcpServer.cpp
index 89464bd0d2..ca84423ff9 100644
--- a/features/netsocket/emac-drivers/TARGET_Cypress/COMPONENT_WHD/interface/CyDhcpServer.cpp
+++ b/features/netsocket/emac-drivers/TARGET_Cypress/COMPONENT_WHD/interface/CyDhcpServer.cpp
@@ -168,8 +168,9 @@ static void sendPacket(UDPSocket *socket, dhcp_packet_t *dhcp, uint32_t size)
     uint32_t broadcast_ip = 0xFFFFFFFF;
     char string_addr[16];
     ipv4_to_string(string_addr, htonl(broadcast_ip));
+    SocketAddress sock_addr(string_addr, IP_PORT_DHCP_CLIENT);
 
-    err = socket->sendto(string_addr, IP_PORT_DHCP_CLIENT, reinterpret_cast<uint8_t *>(dhcp), size);
+    err = socket->sendto(sock_addr, reinterpret_cast<uint8_t *>(dhcp), size);
     if (err < 0) {
         printf("DHCP ERROR: Packet send failure with error %d.", err);
     } else if (err != (int)size) {
@@ -352,8 +353,11 @@ void CyDhcpServer::runServer(void)
     _socket.bind((uint16_t)IP_PORT_DHCP_SERVER);
 
     /* Save the current netmask to be sent in DHCP packets as the 'subnet mask option' */
-    _server_addr.addrv4.addr = string_to_ipv4(_niface->get_ip_address());
-    _netmask.addrv4.addr = string_to_ipv4(_niface->get_netmask());
+    SocketAddress sock_addr;
+    _niface->get_ip_address(&sock_addr);
+    _server_addr.addrv4.addr = string_to_ipv4(sock_addr.get_ip_address());
+    _niface->get_netmask(&sock_addr);
+    _netmask.addrv4.addr = string_to_ipv4(sock_addr.get_ip_address());
 
 #ifdef DHCP_EXTENSIVE_DEBUG
     printf("DHCP Server started.\n");
diff --git a/features/netsocket/ppp/ppp_nsapi.cpp b/features/netsocket/ppp/ppp_nsapi.cpp
index e02617da55..d7ad910d32 100644
--- a/features/netsocket/ppp/ppp_nsapi.cpp
+++ b/features/netsocket/ppp/ppp_nsapi.cpp
@@ -133,7 +133,9 @@ const char *nsapi_ppp_get_ip_addr(FileHandle *stream)
     static char ip_addr[IPADDR_STRLEN_MAX];
 
     if (stream == my_stream) {
-        if (my_interface->get_ip_address(ip_addr, IPADDR_STRLEN_MAX)) {
+        SocketAddress addr;
+        if (my_interface->get_ip_address(&addr) == NSAPI_ERROR_OK) {
+            strncpy(ip_addr, addr.get_ip_address(), IPADDR_STRLEN_MAX);
             return ip_addr;
         }
     }
@@ -148,7 +150,9 @@ const char *nsapi_ppp_get_netmask(FileHandle *stream)
 
     static char netmask[IPADDR_STRLEN_MAX];
     if (stream == my_stream) {
-        if (my_interface->get_netmask(netmask, IPADDR_STRLEN_MAX)) {
+        SocketAddress addr;
+        if (my_interface->get_netmask(&addr)) {
+            strncpy(netmask, addr.get_ip_address(), IPADDR_STRLEN_MAX);
             return netmask;
         }
     }
@@ -163,7 +167,9 @@ const char *nsapi_ppp_get_gw_addr(FileHandle *stream)
 
     static char gwaddr[IPADDR_STRLEN_MAX];
     if (stream == my_stream) {
-        if (my_interface->get_gateway(gwaddr, IPADDR_STRLEN_MAX)) {
+        SocketAddress addr;
+        if (my_interface->get_gateway(&addr)) {
+            strncpy(gwaddr, addr.get_ip_address(), IPADDR_STRLEN_MAX);
             return gwaddr;
         }
     }