Call routing with a mobile network operator supporting a mobile virtual network operator

An apparatus comprising:

• a processor configured to
• identify a call destined for a mobile device;
• query a number portability database for call routing information;
• a receiver configured to receive one or more of a location routing number assigned to the mobile network operator and a location routing number assigned to the mobile virtual network operator;
• wherein the processor is further configured to
• forward a call message associated with the call to a session border control device operated by the mobile network operator;
• and
• determine whether to route the call to a mobile network operator subscriber or a mobile virtual network operator based on whether the location routing number is assigned to the mobile network operator or the mobile virtual network operator.

A non-transitory computer readable storage medium configured to store instructions that when executed cause a processor to perform:

• identifying a call destined for a mobile device;
• querying a number portability database for call routing information;
• receiving one or more of a location routing number assigned to the mobile network operator and a location routing number assigned to the mobile virtual network operator;
• forwarding a call message associated with the call to a session border control device operated by the mobile network operator;
• and
• determining whether to route the call to a mobile network operator subscriber or a mobile virtual network operator based on whether the location routing number is assigned to the mobile network operator or the mobile virtual network operator.