Preferably, {HEAD ~ each network identifier} is retrieved based on {TAIL ~ a Mobile Country Code} , a Mobile Network Code , and a Location Area Code  
is retrieved based on
Preferably , { HEAD ~ each network identifier } is retrieved based on { TAIL ~ a Mobile Country Code } , a Mobile Network Code , and a Location Area Code
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH