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.
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Switch: SGLDTXAQ0MD

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
281-266 A Houston TX 6630 SPOK, INC. 560      
281-267 A Houston TX 6630 SPOK, INC. 560      
281-268 A Houston TX 6630 SPOK, INC. 560      
281-349 A Houston Suburban TX 6630 SPOK, INC. 560      
281-418 A Houston TX 6630 SPOK, INC. 560      
281-439 A Houston TX 6630 SPOK, INC. 560      
281-472 A Houston TX 6630 SPOK, INC. 560      
281-510 A Houston TX 6630 SPOK, INC. 560      
281-527 A Houston TX 6630 SPOK, INC. 560      
281-551 A Bammel TX 6630 SPOK, INC. 560      
281-613 A Houston TX 6630 SPOK, INC. 560      
281-621 A Houston TX 6630 SPOK, INC. 560      
281-629 A Houston TX 6630 SPOK, INC. 560      
281-718 A Houston TX 6630 SPOK, INC. 560      
281-735 A Houston TX 6630 SPOK, INC. 560      
281-952 A Houston TX 6630 SPOK, INC. 560      
281-963 A Houston TX 6630 SPOK, INC. 560      
281-981 A Houston TX 6630 SPOK, INC. 560      
409-671 A Texas City-La Marque TX 6630 SPOK, INC. 560      
713-200 A Houston TX 6630 SPOK, INC. 560      
713-279 A Houston TX 6630 SPOK, INC. 560      
713-288 A Houston TX 6630 SPOK, INC. 560      
713-310 A Houston TX 6630 SPOK, INC. 560      
713-318 A Houston TX 6630 SPOK, INC. 560      
713-326 A Houston TX 6630 SPOK, INC. 560      
713-327 A Houston TX 6630 SPOK, INC. 560      
713-404 A Houston TX 6630 SPOK, INC. 560      
713-406 A Houston TX 6630 SPOK, INC. 560      
713-415 A Houston TX 6630 SPOK, INC. 560      
713-506 A Houston TX 6630 SPOK, INC. 560      
713-508 A Houston TX 6630 SPOK, INC. 560      
713-509 A Houston TX 6630 SPOK, INC. 560      
713-549 A Houston TX 6630 SPOK, INC. 560      
713-593 A Houston TX 6630 SPOK, INC. 560      
713-601 A Houston TX 6630 SPOK, INC. 560      
713-603 A Houston TX 6630 SPOK, INC. 560      
713-604 A Houston TX 6630 SPOK, INC. 560      
713-605 A Houston TX 6630 SPOK, INC. 560      
713-606 A Houston TX 6630 SPOK, INC. 560      
713-607 A Houston TX 6630 SPOK, INC. 560      
713-608 A Houston TX 6630 SPOK, INC. 560      
713-616 A Houston TX 6630 SPOK, INC. 560      
713-617 A Houston TX 6630 SPOK, INC. 560      
713-618 A Houston TX 6630 SPOK, INC. 560      
713-619 A Houston TX 6630 SPOK, INC. 560      
713-642 A Houston TX 6630 SPOK, INC. 560      
713-648 A Houston TX 6630 SPOK, INC. 560      
713-687 A Houston TX 6630 SPOK, INC. 560      
713-698 A Houston TX 6630 SPOK, INC. 560      
713-707 A Houston TX 6630 SPOK, INC. 560      

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Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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