ATIS 0300070(2020-10) PDF

These guidelines identify Service Provider (SP) responsibilities with respect to individual telephone numbers in the 10-digit NANP number format (NPA-NXX-XXXX) within existing geographic central office (NXX) codes administered by the North American Numbering Plan Administrator (NANPA) and the Pooling Administrator (PA). It contains guidelines for the administration of Aging Numbers, Reserved Numbers, and Sequential Number Assignment.

File Size :	2 files , 940 KB
Note :	This product is unavailable in Ukraine, Russia, Belarus
Number of Pages :	30
Published :	10/01/2020