Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 228 [Rate centres in NPA 228] [Dial plan for NPA 228]

NXX: 377

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
228-377 A Biloxi MS   5178 LEVEL 3 COMMUNICATIONS, LLC - MS 484      
228-377 0 Biloxi MS   5178 LEVEL 3 COMMUNICATIONS, LLC - MS 484      
228-377 1 Biloxi MS   5178 LEVEL 3 COMMUNICATIONS, LLC - MS 484      
228-377 2 Biloxi MS   5178 LEVEL 3 COMMUNICATIONS, LLC - MS 484      
228-377 3 Biloxi MS   5178 LEVEL 3 COMMUNICATIONS, LLC - MS 484      
228-377 4 Biloxi MS   5178 LEVEL 3 COMMUNICATIONS, LLC - MS 484      
228-377 5 Biloxi MS   5178 LEVEL 3 COMMUNICATIONS, LLC - MS 484      
228-377 6 Biloxi MS   5178 LEVEL 3 COMMUNICATIONS, LLC - MS 484      
228-377 7 Biloxi MS   5178 LEVEL 3 COMMUNICATIONS, LLC - MS 484      
228-377 8 Biloxi MS   5178 LEVEL 3 COMMUNICATIONS, LLC - MS 484      
228-377 9 Biloxi MS   5178 LEVEL 3 COMMUNICATIONS, LLC - MS 484      

Last updated: Wed, 04 Mar 2026 03:00:52 UTC

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