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.

Marlin EACS, TX

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
254-803 A MRLNTXMLRS0  9533 SOUTHWESTERN BELL 556      
254-803 0 WACOTXEIJMD  6529 T-MOBILE USA, INC. 556   2021-09-21   
254-803 1 MRLNTXMLRS0  9533 SOUTHWESTERN BELL 556      
254-803 2 MRLNTXMLRS0  9533 SOUTHWESTERN BELL 556      
254-803 3 MRLNTXMLRS0  9533 SOUTHWESTERN BELL 556      
254-803 4 WACOTXEIJMD  5562 METROPCS, INC. 556   2021-10-02   
254-803 5 MRLNTXMLRS0  9533 SOUTHWESTERN BELL 556      
254-803 6   145J TERRA NOVA TELECOM INC. 556   2021-09-28   
254-803 7 WACOTXEIJMD  6529 T-MOBILE USA, INC. 556   2021-10-17   
254-803 8 WACOTXEIJMD  5562 METROPCS, INC. 556   2021-10-02   
254-803 9 WACOTXEIJMD  6529 T-MOBILE USA, INC. 556   2021-10-17   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.