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: AUSVTXDK1MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
512-205 A Austin TX 6630 SPOK, INC. 558      
512-235 A Austin TX 6630 SPOK, INC. 558      
512-274 A Jarrell TX 6630 SPOK, INC. 558      
512-307 A Austin TX 6630 SPOK, INC. 558      
512-603 A Austin TX 6630 SPOK, INC. 558      
512-604 A Austin TX 6630 SPOK, INC. 558      
512-606 A Austin TX 6630 SPOK, INC. 558      
512-613 A Austin TX 6630 SPOK, INC. 558      
512-622 A Austin TX 6630 SPOK, INC. 558      
512-624 A Austin TX 6630 SPOK, INC. 558      
512-625 A Austin TX 6630 SPOK, INC. 558      
512-802 A Austin TX 6630 SPOK, INC. 558      
512-849 A Austin TX 6630 SPOK, INC. 558      
512-875 A Austin TX 6630 SPOK, INC. 558      
512-896 A Austin TX 6630 SPOK, INC. 558      
512-935 A Austin TX 6630 SPOK, INC. 558      

Last updated: Sat, 21 Mar 2026 23:53:39 UTC

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