Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Switch: SEFRDESFDS0

Remotes:

Switch Switch name Switch type
BGVLDEBGRS0  BRIDGEVILLE  5ER 
DLMRDEDMRS0  DELMAR  5ER 
GNWDDEGNRS0  GREENWOOD  5ER 
LARLDELRRS0  LAUREL  5ER 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
302-628 A Seaford DE 9210 VERIZON DELAWARE, INC. 228      
302-629 A Seaford DE 9210 VERIZON DELAWARE, INC. 228      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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