Abstract: A system and method are described that are carried out by a core network element of a host mobile carrier core network to perform an access point name resolution to facilitate establishing a session between a user equipment and a target packet gateway (PGW) of a mobile virtual network operator (MVNO). The method includes receiving a connection request from a user equipment identified as falling within particular ranges of mobile subscriber identity number (MSIN) values corresponding to user equipment of hosted MVNOs. The connection request includes: an international mobile subscriber identity (IMSI), and an access point name (APN). The method further includes establishing an MVNO identifier from the provided IMSI and thereafter generating an MVNO-specific APN by appending the MVNO identifier to the APN. The method further includes submitting a name resolution request including the MVNO-specific APN to a naming service server.