Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Philadelphia Suburban Zone 23, PA

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
835-888 4 PHLAPAMK33Z  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 228   2022-11-05   
835-888 5 PHLAPAMK33Z  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 228   2022-12-04   
835-888 6 PHLAPAMK33Z  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 228   2022-12-04   
835-888 7 PHLAPAMK33Z  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 228   2022-11-05   
835-888 8   145J TERRA NOVA TELECOM INC. 228   2022-10-22   
835-888 9 PHLAPAMK33Z  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 228   2022-11-05   

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Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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