Local Calling Guide

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NPA: 227 [Rate centres in NPA 227] [Dial plan for NPA 227]

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
227-310 4 Washington Zone 10 MD CHCHMDBEWMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2026-04-27   
227-310 5 Washington Zone 10 MD CHCHMDBEWMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2026-04-27   
227-310 6 Washington Zone 10 MD CHCHMDBEWMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2026-04-27   
227-310 7 Washington Zone 10 MD CHCHMDBEWMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2026-04-27   
227-310 8 Washington Zone 10 MD CHCHMDBEWMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2026-04-27   
227-312 A Washington Zone 11 MD   876D ONVOY, LLC - MD 236   2026-09-28   
227-312 0 Washington Zone 11 MD   876D ONVOY, LLC - MD 236   2026-09-28   
227-312 7 Washington Zone 11 MD   824J OPENTACT INC. 236   2026-10-16   
227-313 A Washington Zone 5 MD   876D ONVOY, LLC - MD 236   2026-09-28   
227-313 0 Washington Zone 5 MD   876D ONVOY, LLC - MD 236   2026-09-28   
227-313 1 Washington Zone 5 MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2026-10-16   
227-313 3 Washington Zone 5 MD   820C INTRADO COMMUNICATIONS, LLC 236   2026-10-15   
227-313 7 Washington Zone 5 MD   824J OPENTACT INC. 236   2026-10-23   
227-313 8 Washington Zone 5 MD   876D ONVOY, LLC - MD 236   2026-09-29   
227-313 9 Washington Zone 5 MD   876D ONVOY, LLC - MD 236   2026-09-29   
227-314 A Waldorf MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2026-10-04   
227-314 0 Waldorf MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2026-10-05   
227-314 1 Waldorf MD   876D ONVOY, LLC - MD 236   2026-10-05   
227-314 2 Waldorf MD   876D ONVOY, LLC - MD 236   2026-10-05   
227-314 3 Waldorf MD   876D ONVOY, LLC - MD 236   2026-10-05   
227-314 4 Waldorf MD   820C INTRADO COMMUNICATIONS, LLC 236   2026-11-01   
227-314 7 Waldorf MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2026-10-16   
227-314 8 Waldorf MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2026-10-04   
227-314 9 Waldorf MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2026-10-04   
227-315 A Ashton MD   071F BANDWIDTH.COM CLEC, LLC - MD 236      
227-315 0 Ashton MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2026-06-06   
227-315 1 Ashton MD   876D ONVOY, LLC - MD 236   2026-08-23   
227-315 7 Ashton MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2026-11-08   
227-315 8 Ashton MD   876D ONVOY, LLC - MD 236   2026-07-24   
227-315 9 Ashton MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2026-09-25   
227-316 A Brunswick MD   876D ONVOY, LLC - MD 240   2026-10-03   
227-316 0 Brunswick MD   876D ONVOY, LLC - MD 240   2026-10-03   
227-316 7 Brunswick MD   962J VERSATEL LLC 240   2026-10-08   
227-317 A Frederick MD   876D ONVOY, LLC - MD 240   2026-10-03   
227-317 0 Frederick MD   876D ONVOY, LLC - MD 240   2026-10-03   
227-317 7 Frederick MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 240   2026-10-09   
227-317 8 Frederick MD   071F BANDWIDTH.COM CLEC, LLC - MD 240   2026-10-05   
227-317 9 Frederick MD   071F BANDWIDTH.COM CLEC, LLC - MD 240   2026-10-05   
227-318 A Myersville MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 240   2026-10-09   
227-318 9 Myersville MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 240   2026-10-09   
227-319 A Washington Zone 10 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2026-10-26   
227-319 0 Washington Zone 10 MD   820C INTRADO COMMUNICATIONS, LLC 236   2026-10-27   
227-319 1 Washington Zone 10 MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2026-10-27   
227-319 2 Washington Zone 10 MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2026-10-27   
227-319 7 Washington Zone 10 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2026-10-26   
227-319 8 Washington Zone 10 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2026-10-26   
227-319 9 Washington Zone 10 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2026-10-26   
227-320 A Laurel MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2026-10-30   
227-320 0 Laurel MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2026-11-02   
227-320 1 Laurel MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2026-11-02   
227-320 2 Laurel MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2026-11-02   
227-320 3 Laurel MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2026-11-02   
227-320 4 Laurel MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2026-11-02   
227-320 5 Laurel MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2026-11-02   
227-320 6 Laurel MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2026-11-02   
227-320 7 Laurel MD   820C INTRADO COMMUNICATIONS, LLC 236   2026-11-02   
227-320 8 Laurel MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2026-10-30   
227-320 9 Laurel MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2026-10-30   
227-321 A Washington Zone 4 MD   876D ONVOY, LLC - MD 236   2026-10-26   
227-321 0 Washington Zone 4 MD   876D ONVOY, LLC - MD 236   2026-10-26   
227-321 1 Washington Zone 4 MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2026-11-08   
227-321 7 Washington Zone 4 MD   820C INTRADO COMMUNICATIONS, LLC 236   2026-10-27   
227-322 A Washington Zone 2 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2026-11-20   
227-322 0 Washington Zone 2 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2026-11-20   
227-322 1 Washington Zone 2 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2026-11-20   
227-322 2 Washington Zone 2 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2026-11-20   
227-322 3 Washington Zone 2 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2026-11-20   
227-322 4 Washington Zone 2 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2026-11-20   
227-322 5 Washington Zone 2 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2026-11-20   
227-322 6 Washington Zone 2 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2026-11-20   
227-322 7 Washington Zone 2 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2026-11-20   
227-322 8 Washington Zone 2 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2026-11-20   
227-322 9 Washington Zone 2 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2026-11-20   
227-323 A Washington Zone 2 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2026-11-20   
227-323 7 Washington Zone 2 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2026-11-20   
227-323 8 Washington Zone 2 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2026-11-20   
227-323 9 Washington Zone 2 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2026-11-20   
227-324 A Gaithersburg MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2026-11-27   
227-324 9 Gaithersburg MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2026-11-27   
227-333 A Washington Zone 16 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2025-10-16   
227-333 0 Washington Zone 16 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2025-10-17   
227-333 1 Washington Zone 16 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2026-05-08   
227-333 2 Washington Zone 16 MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2026-09-27   
227-333 3 Washington Zone 16 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2025-10-16   
227-333 4 Washington Zone 16 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2025-10-16   
227-333 5 Washington Zone 16 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2025-10-16   
227-333 6 Washington Zone 16 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2025-10-16   
227-333 7 Washington Zone 16 MD   876D ONVOY, LLC - MD 236   2026-09-28   
227-333 8 Washington Zone 16 MD   876D ONVOY, LLC - MD 236   2026-09-28   
227-333 9 Washington Zone 16 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2026-06-07   
227-334 A Keedysville MD FRDRMDFRX2Y  7421 AT&T - LOCAL 240   2024-12-23   
227-334 0 Keedysville MD CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2025-10-12   
227-334 1 Keedysville MD CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2026-06-22   
227-334 4 Keedysville MD   145J TERRA NOVA TELECOM INC. 240   2025-02-13   
227-334 9 Keedysville MD FRDRMDFRX2Y  7421 AT&T - LOCAL 240   2024-12-23   
227-338 A Washington Zone 10 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2025-12-04   
227-338 0 Washington Zone 10 MD CHCHMDBEWMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2025-12-23   
227-338 1 Washington Zone 10 MD CHCHMDBEWMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2025-12-23   
227-338 2 Washington Zone 10 MD CHCHMDBEWMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2025-12-23   
227-338 3 Washington Zone 10 MD CHCHMDBEWMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2025-12-23   

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Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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