Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Markham, TX

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
979-843 A MRHMTXXADS0  2076 GANADO TEL. CO., INC. 560      
979-989 A HSTQTXRG6MD  139F WORLDCALL INTERCONNECT INC. 560      
979-989 6 HSTNTXJAXGY  516J TON80 COMMUNICATIONS, LLC 560   2021-07-15   
979-989 9 HSTQTXRG6MD  139F WORLDCALL INTERCONNECT INC. 560   2008-09-19   

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

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