diff --git a/extmod/modlwip.c b/extmod/modlwip.c
index 53bead2a32..e20ade139b 100644
--- a/extmod/modlwip.c
+++ b/extmod/modlwip.c
@@ -1780,4 +1780,7 @@ const mp_obj_module_t mp_module_lwip = {
 
 MP_REGISTER_MODULE(MP_QSTR_lwip, mp_module_lwip, MICROPY_PY_LWIP);
 
+// On LWIP-ports, this is the usocket module (replaces extmod/modusocket.c).
+MP_REGISTER_MODULE(MP_QSTR_socket, mp_module_lwip, MICROPY_PY_LWIP);
+
 #endif // MICROPY_PY_LWIP
diff --git a/extmod/modnetwork.c b/extmod/modnetwork.c
index 1f242de869..f63f708a2b 100644
--- a/extmod/modnetwork.c
+++ b/extmod/modnetwork.c
@@ -102,6 +102,8 @@ const mp_obj_module_t mp_module_network = {
     .globals = (mp_obj_dict_t *)&mp_module_network_globals,
 };
 
+MP_REGISTER_MODULE(MP_QSTR_network, mp_module_network, MICROPY_PY_NETWORK);
+
 /*******************************************************************************/
 // Implementations of network methods that can be used by any interface
 
diff --git a/extmod/modonewire.c b/extmod/modonewire.c
index 8b34268157..1cfddc830d 100644
--- a/extmod/modonewire.c
+++ b/extmod/modonewire.c
@@ -163,4 +163,6 @@ const mp_obj_module_t mp_module_onewire = {
     .globals = (mp_obj_dict_t *)&onewire_module_globals,
 };
 
+MP_REGISTER_MODULE(MP_QSTR__onewire, mp_module_onewire, MICROPY_PY_ONEWIRE);
+
 #endif // MICROPY_PY_ONEWIRE
diff --git a/extmod/modusocket.c b/extmod/modusocket.c
index bd11e70c1e..c4bf6342a4 100644
--- a/extmod/modusocket.c
+++ b/extmod/modusocket.c
@@ -588,4 +588,6 @@ const mp_obj_module_t mp_module_usocket = {
     .globals = (mp_obj_dict_t *)&mp_module_usocket_globals,
 };
 
+MP_REGISTER_MODULE(MP_QSTR_socket, mp_module_usocket, MICROPY_PY_NETWORK && MICROPY_PY_USOCKET && !MICROPY_PY_LWIP);
+
 #endif // MICROPY_PY_NETWORK && MICROPY_PY_USOCKET && !MICROPY_PY_LWIP
diff --git a/ports/esp32/modnetwork.c b/ports/esp32/modnetwork.c
index e025f0293a..199836e365 100644
--- a/ports/esp32/modnetwork.c
+++ b/ports/esp32/modnetwork.c
@@ -295,3 +295,7 @@ const mp_obj_module_t mp_module_network = {
     .base = { &mp_type_module },
     .globals = (mp_obj_dict_t *)&mp_module_network_globals,
 };
+
+// Note: This port doesn't define MICROPY_PY_NETWORK so this will not conflict
+// with the common implementation provided by extmod/modnetwork.c.
+MP_REGISTER_MODULE(MP_QSTR_network, mp_module_network, 1);
diff --git a/ports/esp32/modsocket.c b/ports/esp32/modsocket.c
index 9d4bfb37c4..aa3a8d1b6d 100644
--- a/ports/esp32/modsocket.c
+++ b/ports/esp32/modsocket.c
@@ -867,3 +867,8 @@ const mp_obj_module_t mp_module_usocket = {
     .base = { &mp_type_module },
     .globals = (mp_obj_dict_t *)&mp_module_socket_globals,
 };
+
+// Note: This port doesn't define MICROPY_PY_USOCKET or MICROPY_PY_LWIP so
+// this will not conflict with the common implementation provided by
+// extmod/mod{lwip,usocket}.c.
+MP_REGISTER_MODULE(MP_QSTR_usocket, mp_module_usocket, 1);
diff --git a/ports/esp32/mpconfigport.h b/ports/esp32/mpconfigport.h
index ffc155360a..32dea05b4f 100644
--- a/ports/esp32/mpconfigport.h
+++ b/ports/esp32/mpconfigport.h
@@ -140,17 +140,11 @@
 extern const struct _mp_obj_module_t esp_module;
 extern const struct _mp_obj_module_t esp32_module;
 extern const struct _mp_obj_module_t utime_module;
-extern const struct _mp_obj_module_t mp_module_usocket;
-extern const struct _mp_obj_module_t mp_module_network;
-extern const struct _mp_obj_module_t mp_module_onewire;
 
 #define MICROPY_PORT_BUILTIN_MODULES \
     { MP_OBJ_NEW_QSTR(MP_QSTR_esp), (mp_obj_t)&esp_module }, \
     { MP_OBJ_NEW_QSTR(MP_QSTR_esp32), (mp_obj_t)&esp32_module }, \
     { MP_OBJ_NEW_QSTR(MP_QSTR_utime), (mp_obj_t)&utime_module }, \
-    { MP_OBJ_NEW_QSTR(MP_QSTR_usocket), (mp_obj_t)&mp_module_usocket }, \
-    { MP_OBJ_NEW_QSTR(MP_QSTR_network), (mp_obj_t)&mp_module_network }, \
-    { MP_OBJ_NEW_QSTR(MP_QSTR__onewire), (mp_obj_t)&mp_module_onewire }, \
 
 #define MP_STATE_PORT MP_STATE_VM
 
diff --git a/ports/esp8266/modnetwork.c b/ports/esp8266/modnetwork.c
index 6988e09bd1..d24bc147e6 100644
--- a/ports/esp8266/modnetwork.c
+++ b/ports/esp8266/modnetwork.c
@@ -545,3 +545,7 @@ const mp_obj_module_t network_module = {
     .base = { &mp_type_module },
     .globals = (mp_obj_dict_t *)&mp_module_network_globals,
 };
+
+// Note: This port doesn't define MICROPY_PY_NETWORK so this will not conflict
+// with the common implementation provided by extmod/modnetwork.c.
+MP_REGISTER_MODULE(MP_QSTR_network, network_module, 1);
diff --git a/ports/esp8266/mpconfigport.h b/ports/esp8266/mpconfigport.h
index 0f1da51671..63577e7b08 100644
--- a/ports/esp8266/mpconfigport.h
+++ b/ports/esp8266/mpconfigport.h
@@ -161,17 +161,11 @@ extern const struct _mp_print_t mp_debug_print;
 
 // extra built in modules to add to the list of known ones
 extern const struct _mp_obj_module_t esp_module;
-extern const struct _mp_obj_module_t network_module;
 extern const struct _mp_obj_module_t utime_module;
-extern const struct _mp_obj_module_t mp_module_lwip;
-extern const struct _mp_obj_module_t mp_module_onewire;
 
 #define MICROPY_PORT_BUILTIN_MODULES \
     { MP_ROM_QSTR(MP_QSTR_esp), MP_ROM_PTR(&esp_module) }, \
-    { MP_ROM_QSTR(MP_QSTR_usocket), MP_ROM_PTR(&mp_module_lwip) }, \
-    { MP_ROM_QSTR(MP_QSTR_network), MP_ROM_PTR(&network_module) }, \
     { MP_ROM_QSTR(MP_QSTR_utime), MP_ROM_PTR(&utime_module) }, \
-    { MP_ROM_QSTR(MP_QSTR__onewire), MP_ROM_PTR(&mp_module_onewire) }, \
 
 #define MP_STATE_PORT MP_STATE_VM
 
diff --git a/ports/mimxrt/mpconfigport.h b/ports/mimxrt/mpconfigport.h
index 0fe6e298e2..1569268cd9 100644
--- a/ports/mimxrt/mpconfigport.h
+++ b/ports/mimxrt/mpconfigport.h
@@ -229,27 +229,7 @@ static inline void restore_irq_pri(uint32_t basepri) {
     { MP_ROM_QSTR(MP_QSTR_open), MP_ROM_PTR(&mp_builtin_open_obj) },
 
 extern const struct _mp_obj_module_t mp_module_mimxrt;
-extern const struct _mp_obj_module_t mp_module_onewire;
 extern const struct _mp_obj_module_t mp_module_utime;
-extern const struct _mp_obj_module_t mp_module_usocket;
-extern const struct _mp_obj_module_t mp_module_network;
-
-#if MICROPY_PY_NETWORK
-#define NETWORK_BUILTIN_MODULE              { MP_ROM_QSTR(MP_QSTR_network), MP_ROM_PTR(&mp_module_network) },
-#else
-#define NETWORK_BUILTIN_MODULE
-#endif
-
-#if MICROPY_PY_USOCKET && MICROPY_PY_LWIP
-// usocket implementation provided by lwIP
-#define SOCKET_BUILTIN_MODULE               { MP_ROM_QSTR(MP_QSTR_usocket), MP_ROM_PTR(&mp_module_lwip) },
-#elif MICROPY_PY_USOCKET
-// usocket implementation provided by skeleton wrapper
-#define SOCKET_BUILTIN_MODULE               { MP_ROM_QSTR(MP_QSTR_usocket), MP_ROM_PTR(&mp_module_usocket) },
-#else
-// no usocket module
-#define SOCKET_BUILTIN_MODULE
-#endif
 
 #if defined(MICROPY_HW_ETH_MDC)
 extern const struct _mp_obj_type_t network_lan_type;
@@ -261,9 +241,6 @@ extern const struct _mp_obj_type_t network_lan_type;
 #define MICROPY_PORT_BUILTIN_MODULES \
     { MP_ROM_QSTR(MP_QSTR_mimxrt), (mp_obj_t)&mp_module_mimxrt }, \
     { MP_ROM_QSTR(MP_QSTR_utime), MP_ROM_PTR(&mp_module_utime) }, \
-    { MP_ROM_QSTR(MP_QSTR__onewire), MP_ROM_PTR(&mp_module_onewire) }, \
-    SOCKET_BUILTIN_MODULE \
-    NETWORK_BUILTIN_MODULE \
 
 #ifndef MICROPY_BOARD_NETWORK_INTERFACES
 #define MICROPY_BOARD_NETWORK_INTERFACES
diff --git a/ports/rp2/mpconfigport.h b/ports/rp2/mpconfigport.h
index 0ca704755a..6c7a1e60e1 100644
--- a/ports/rp2/mpconfigport.h
+++ b/ports/rp2/mpconfigport.h
@@ -134,22 +134,12 @@
 #define MICROPY_PORT_BUILTINS \
     { MP_ROM_QSTR(MP_QSTR_open), MP_ROM_PTR(&mp_builtin_open_obj) },
 
-extern const struct _mp_obj_module_t mp_module_network;
-extern const struct _mp_obj_module_t mp_module_onewire;
 extern const struct _mp_obj_module_t mp_module_rp2;
-extern const struct _mp_obj_module_t mp_module_usocket;
 extern const struct _mp_obj_module_t mp_module_utime;
 
-#if MICROPY_PY_USOCKET
-#define SOCKET_BUILTIN_MODULE               { MP_ROM_QSTR(MP_QSTR_usocket), MP_ROM_PTR(&mp_module_usocket) },
-#else
-#define SOCKET_BUILTIN_MODULE
-#endif
 #if MICROPY_PY_NETWORK
-#define NETWORK_BUILTIN_MODULE              { MP_ROM_QSTR(MP_QSTR_network), MP_ROM_PTR(&mp_module_network) },
 #define NETWORK_ROOT_POINTERS               mp_obj_list_t mod_network_nic_list;
 #else
-#define NETWORK_BUILTIN_MODULE
 #define NETWORK_ROOT_POINTERS
 #endif
 
@@ -182,11 +172,8 @@ extern const struct _mod_network_nic_type_t mod_network_nic_type_nina;
 #endif
 
 #define MICROPY_PORT_BUILTIN_MODULES \
-    { MP_OBJ_NEW_QSTR(MP_QSTR__onewire), (mp_obj_t)&mp_module_onewire }, \
     { MP_OBJ_NEW_QSTR(MP_QSTR__rp2), (mp_obj_t)&mp_module_rp2 }, \
     { MP_ROM_QSTR(MP_QSTR_utime), MP_ROM_PTR(&mp_module_utime) }, \
-    SOCKET_BUILTIN_MODULE \
-    NETWORK_BUILTIN_MODULE \
 
 #ifndef MICROPY_BOARD_NETWORK_INTERFACES
 #define MICROPY_BOARD_NETWORK_INTERFACES
diff --git a/ports/stm32/mpconfigport.h b/ports/stm32/mpconfigport.h
index 1b6ebf92af..4bb1fcee39 100644
--- a/ports/stm32/mpconfigport.h
+++ b/ports/stm32/mpconfigport.h
@@ -212,29 +212,6 @@ extern const struct _mp_obj_module_t mp_module_onewire;
 #define UTIME_BUILTIN_MODULE
 #endif
 
-#if MICROPY_PY_USOCKET && MICROPY_PY_LWIP
-// usocket implementation provided by lwIP
-#define SOCKET_BUILTIN_MODULE               { MP_ROM_QSTR(MP_QSTR_usocket), MP_ROM_PTR(&mp_module_lwip) },
-#elif MICROPY_PY_USOCKET
-// usocket implementation provided by skeleton wrapper
-#define SOCKET_BUILTIN_MODULE               { MP_ROM_QSTR(MP_QSTR_usocket), MP_ROM_PTR(&mp_module_usocket) },
-#else
-// no usocket module
-#define SOCKET_BUILTIN_MODULE
-#endif
-
-#if MICROPY_PY_NETWORK
-#define NETWORK_BUILTIN_MODULE              { MP_ROM_QSTR(MP_QSTR_network), MP_ROM_PTR(&mp_module_network) },
-#else
-#define NETWORK_BUILTIN_MODULE
-#endif
-
-#if MICROPY_PY_ONEWIRE
-#define ONEWIRE_BUILTIN_MODULE              { MP_ROM_QSTR(MP_QSTR__onewire), MP_ROM_PTR(&mp_module_onewire) },
-#else
-#define ONEWIRE_BUILTIN_MODULE
-#endif
-
 #if defined(MICROPY_HW_ETH_MDC)
 extern const struct _mp_obj_type_t network_lan_type;
 #define MICROPY_HW_NIC_ETH                  { MP_ROM_QSTR(MP_QSTR_LAN), MP_ROM_PTR(&network_lan_type) },
@@ -271,9 +248,6 @@ extern const struct _mod_network_nic_type_t mod_network_nic_type_cc3k;
     PYB_BUILTIN_MODULE \
     STM_BUILTIN_MODULE \
     UTIME_BUILTIN_MODULE \
-    SOCKET_BUILTIN_MODULE \
-    NETWORK_BUILTIN_MODULE \
-    ONEWIRE_BUILTIN_MODULE \
 
 // extra constants
 #define MICROPY_PORT_CONSTANTS \