A method comprising: retrieving by a user equipment UE an access point AP Media Access Control MAC address for an AP to which the UE is connected, wherein the AP is in an untrusted Internet Protocol IP access network; reporting location information for the UE to an evolved Packet Data Gateway ePDG over an SWu interface using Internet Key Exchange version 2 IKEv2 protocol, wherein the location information includes, at least in part, a location of the UE in Global Positioning System GPS coordinates, a service set identifier SSID for the untrusted IP access network, the retrieved AP MAC address and cell identity information for the UE; populating a location database with the location information for the UE, wherein the location database includes, at least in part, location information for other UE in the untrusted IP access network; and further comprising: comparing, based on the AP MAC address contained in the location information for the UE, the reported location of the UE to locations of UE previously stored in the location database that have previously connected to the AP and identifying the location of the UE contained in the location information for the UE as potentially invalid if it is not near corresponding locations for the UE previously stored in the location database that have previously connected to the AP; or comparing the reported location of the UE contained in the location information for the UE to locations of UE previously stored in the location database and identifying the AP MAC address contained in the location information for the UE as potentially invalid if it does not match corresponding AP MAC addresses for the UE previously stored in the location database that have corresponding locations near the location of the UE. retrieving by a user equipment UE an access point AP Media Access Control MAC address for an AP to which the UE is connected, wherein the AP is in an untrusted Internet Protocol IP access network; reporting location information for the UE to an evolved Packet Data Gateway ePDG over an SWu interface using Internet Key Exchange version 2 IKEv2 protocol, wherein the location information includes, at least in part, a location of the UE in Global Positioning System GPS coordinates, a service set identifier SSID for the untrusted IP access network, the retrieved AP MAC address and cell identity information for the UE; populating a location database with the location information for the UE, wherein the location database includes, at least in part, location information for other UE in the untrusted IP access network; and further comprising: comparing, based on the AP MAC address contained in the location information for the UE, the reported location of the UE to locations of UE previously stored in the location database that have previously connected to the AP and identifying the location of the UE contained in the location information for the UE as potentially invalid if it is not near corresponding locations for the UE previously stored in the location database that have previously connected to the AP; or comparing the reported location of the UE contained in the location information for the UE to locations of UE previously stored in the location database and identifying the AP MAC address contained in the location information for the UE as potentially invalid if it does not match corresponding AP MAC addresses for the UE previously stored in the location database that have corresponding locations near the location of the UE. comparing, based on the AP MAC address contained in the location information for the UE, the reported location of the UE to locations of UE previously stored in the location database that have previously connected to the AP and identifying the location of the UE contained in the location information for the UE as potentially invalid if it is not near corresponding locations for the UE previously stored in the location database that have previously connected to the AP; or comparing the reported location of the UE contained in the location information for the UE to locations of UE previously stored in the location database and identifying the AP MAC address contained in the location information for the UE as potentially invalid if it does not match corresponding AP MAC addresses for the UE previously stored in the location database that have corresponding locations near the location of the UE.