In short: when phone call is made, phone switch checks a database to see if the called number has a secondary phone number (caller LNR), if yes, that number is used to route the call. LNP = Local Number Portability NPAC = Number portability administrat…
Posted in networking, NPA-NXX, telco | Comments Off | permalink
In short: when phone call is made, phone switch checks a database to see if the called number has a secondary phone number (caller LNR), if yes, that number is used to route the call. LNP = Local Number Portability NPAC = Number portability administrat…
Posted in networking, NPA-NXX, telco | Comments Off | permalink
NPA NXX Lookup tool
Posted in lookup, NPA-NXX, reference, telephony, voip | Comments Off | permalink
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Konstantin Antselovich (c) 2004-2011
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