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: GLTNTXSODS0

Remotes:

Switch Switch name Switch type
GLTNTXSHRS1  GALV. SHERWOOD  RSC 
GLTNTXWIRS0  GALV. WEST ISLAND  RSC 
PTBLTXCBRS2  PORT BOLIVAR  RSC 
PTBLTXPTRS1  PORT BOLIVAR  RLC 
PTBLTXRBRS1  PORT BOLIVAR  RS 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
409-266 A Galveston TX 9533 SOUTHWESTERN BELL 560      
409-443 A Galveston TX 9533 SOUTHWESTERN BELL 560      
409-621 A Galveston TX 9533 SOUTHWESTERN BELL 560      
409-747 A Galveston TX 9533 SOUTHWESTERN BELL 560      
409-750 A Galveston TX 9533 SOUTHWESTERN BELL 560      
409-761 A Galveston TX 9533 SOUTHWESTERN BELL 560      
409-762 A Galveston TX 9533 SOUTHWESTERN BELL 560      
409-763 A Galveston TX 9533 SOUTHWESTERN BELL 560      
409-765 A Galveston TX 9533 SOUTHWESTERN BELL 560      
409-766 A Galveston TX 9533 SOUTHWESTERN BELL 560      
409-770 A Galveston TX 9533 SOUTHWESTERN BELL 560      
409-772 A Galveston TX 9533 SOUTHWESTERN BELL 560      
409-795 A Galveston TX 9533 SOUTHWESTERN BELL 560      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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