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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Marlin, TX

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
254-883 6 MRLNTXMLRS0  9533 SOUTHWESTERN BELL 556      
254-883 7 MRLNTXMLRS0  9533 SOUTHWESTERN BELL 556      
254-883 8 MRLNTXMLRS0  9533 SOUTHWESTERN BELL 556      
254-883 9 WACOTXEIJMD  6529 T-MOBILE USA, INC. 556   2021-10-17   

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

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