HLRHome Location Register
HTTPHypertext Transfer Protocol
IMSIInternational Mobile Subscriber Identity
MSISDNMobile Subscriber Integrated Services Digital Network Number
SRI for SMSend Routing Info For Short Message
SS7Signalling System Number 7
SNPACSwedish Number Portability Administrative Center
RFCRequest for Comments, a publication from the Internet Engineering Task Force
MCCMobile Country Code
MNCMobile Network Code
MVNOMobile Virtual Network Operator (do not have their own radio access network)