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: HSTNTX01X7X

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
979-421 8 Brenham TX 516C AT&T CORP. 560   2011-08-02   
979-476 3 Bay City TX 516C AT&T CORP. 560   2011-02-05   
979-531 3 Wharton TX 516C AT&T CORP. 560   2011-02-05   
979-534 2 El Campo TX 516C AT&T CORP. 560   2011-02-05   
979-627 9 Sealy TX 516C AT&T CORP. 560   2011-02-05   
979-863 5 Matagorda TX 516C AT&T CORP. 560   2011-02-05   
979-871 4 Freeport TX 516C AT&T CORP. 560   2011-02-05   
979-921 5 Hempstead TX 516C AT&T CORP. 560   2011-11-09   
979-942 9 Columbus TX 516C AT&T CORP. 560   2011-02-05   

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Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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