diff --git a/src/switch_core.c b/src/switch_core.c
index 7b7f8fe9d8..2a27b57ea3 100644
--- a/src/switch_core.c
+++ b/src/switch_core.c
@@ -1485,6 +1485,7 @@ SWITCH_DECLARE(void) switch_load_network_lists(switch_bool_t reload)
 	switch_network_list_add_cidr(rfc_list, "172.16.0.0/12", SWITCH_FALSE);
 	switch_network_list_add_cidr(rfc_list, "192.168.0.0/16", SWITCH_FALSE);
 	switch_network_list_add_cidr(rfc_list, "169.254.0.0/16", SWITCH_FALSE);
+	switch_network_list_add_cidr(rfc_list, "100.64.0.0/10", SWITCH_FALSE);
 	switch_network_list_add_cidr(rfc_list, "fe80::/10", SWITCH_FALSE);
 	switch_core_hash_insert(IP_LIST.hash, tmp_name, rfc_list);
 
@@ -1504,6 +1505,7 @@ SWITCH_DECLARE(void) switch_load_network_lists(switch_bool_t reload)
 	switch_network_list_add_cidr(rfc_list, "172.16.0.0/12", SWITCH_FALSE);
 	switch_network_list_add_cidr(rfc_list, "192.168.0.0/16", SWITCH_FALSE);
 	switch_network_list_add_cidr(rfc_list, "169.254.0.0/16", SWITCH_FALSE);
+	switch_network_list_add_cidr(rfc_list, "100.64.0.0/10", SWITCH_FALSE);
 	switch_network_list_add_cidr(rfc_list, "::/0", SWITCH_FALSE);
 	switch_core_hash_insert(IP_LIST.hash, tmp_name, rfc_list);