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.

OCN: 093F ONVOY, LLC - MO

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 >>

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
557-247 6 Mehlville MO   520   2026-05-09   
557-247 7 Mehlville MO   520   2026-04-04   
557-247 8 Mehlville MO   520   2026-04-04   
557-248 0 St Louis MO   520   2026-06-22   
557-248 8 St Louis MO   520   2026-06-22   
557-248 9 St Louis MO   520   2026-06-22   
557-249 A Ladue MO   520   2026-03-06   
557-249 0 Ladue MO   520   2026-03-06   
557-249 1 Ladue MO   520   2026-03-06   
557-249 2 Ladue MO   520   2026-05-09   
557-249 3 Ladue MO   520   2026-05-09   
557-249 5 Ladue MO   520   2026-05-09   
557-249 6 Ladue MO   520   2026-05-09   
557-249 7 Ladue MO   520   2026-03-22   
557-249 8 Ladue MO   520   2026-03-09   
557-249 9 Ladue MO   520   2026-03-22   
557-250 8 St Louis MO   520   2026-04-29   
557-250 9 St Louis MO   520   2026-04-29   
557-251 0 Kirkwood MO   520   2026-04-13   
557-251 1 Kirkwood MO   520   2026-05-03   
557-253 0 Kirkwood MO   520   2026-07-20   
557-253 1 Kirkwood MO   520   2026-07-20   
557-253 2 Kirkwood MO   520   2026-07-20   
557-255 A Ladue MO   520   2026-07-20   
557-255 0 Ladue MO   520   2026-07-20   
557-255 1 Ladue MO   520   2026-07-20   
557-255 2 Ladue MO   520   2026-07-20   
557-255 3 Ladue MO   520   2026-07-20   
557-255 4 Ladue MO   520   2026-07-20   
557-255 5 Ladue MO   520   2026-07-20   
557-256 A Mehlville MO   520   2026-07-20   
557-256 0 Mehlville MO   520   2026-07-20   
557-256 1 Mehlville MO   520   2026-07-20   
557-333 A Sappington MO   520   2025-09-08   
557-333 0 Sappington MO   520   2025-09-08   
557-333 1 Sappington MO   520   2025-11-28   
557-333 2 Sappington MO   520   2026-05-09   
557-333 3 Sappington MO   520   2025-09-08   
557-333 4 Sappington MO   520   2025-09-08   
557-333 5 Sappington MO   520   2026-05-09   
557-333 6 Sappington MO   520   2026-05-09   
557-333 7 Sappington MO   520   2026-05-09   
557-333 8 Sappington MO   520   2026-03-22   
557-333 9 Sappington MO   520   2026-05-09   
557-444 A Creve Coeur MO   520   2025-09-08   
557-444 0 Creve Coeur MO   520   2025-09-08   
557-444 1 Creve Coeur MO   520   2026-03-14   
557-444 2 Creve Coeur MO   520   2026-05-03   
557-444 3 Creve Coeur MO   520   2026-05-03   
557-444 4 Creve Coeur MO   520   2025-09-08   
557-444 5 Creve Coeur MO   520   2025-09-08   
557-444 6 Creve Coeur MO   520   2026-06-13   
557-444 7 Creve Coeur MO   520   2026-06-13   
557-444 8 Creve Coeur MO   520   2026-01-10   
557-467 A St Louis MO STLSMOWQDS2  520      
557-467 0 St Louis MO STLSMOWQDS2  520   2022-10-09   
557-467 1 St Louis MO STLSMOWQDS2  520   2022-10-09   
557-467 2 St Louis MO STLSMOWQDS2  520   2022-10-09   
557-467 3 St Louis MO STLSMOWQDS2  520   2022-10-09   
557-467 4 St Louis MO STLSMOWQDS2  520   2022-10-09   
557-467 5 St Louis MO STLSMOWQDS2  520   2022-10-09   
557-467 6 St Louis MO STLSMOWQDS2  520   2022-10-09   
557-467 7 St Louis MO STLSMOWQDS2  520   2022-10-09   
557-467 8 St Louis MO STLSMOWQDS2  520   2022-10-09   
557-467 9 St Louis MO STLSMOWQDS2  520   2022-10-09   
557-557 A St Louis MO STLSMOWQDS2  520      
557-557 1 St Louis MO STLSMOWQDS2  520   2023-06-14   
557-557 2 St Louis MO STLSMOWQDS2  520   2023-06-14   
557-557 3 St Louis MO STLSMOWQDS2  520   2023-06-14   
557-557 4 St Louis MO STLSMOWQDS2  520   2023-06-14   
557-557 5 St Louis MO STLSMOWQDS2  520   2023-06-14   
557-557 7 St Louis MO STLSMOWQDS2  520   2023-06-14   
557-557 8 St Louis MO STLSMOWQDS2  520   2023-06-14   
557-557 9 St Louis MO STLSMOWQDS2  520   2023-06-14   
557-567 0 Kirkwood MO STLSMOWQDS2  520   2025-01-03   
557-567 1 Kirkwood MO   520   2025-02-01   
557-567 9 Kirkwood MO   520   2025-03-13   
557-777 2 Creve Coeur MO STLSMOWQDS2  520   2023-08-10   
557-777 3 Creve Coeur MO STLSMOWQDS2  520   2023-09-08   
557-777 4 Creve Coeur MO STLSMOWQDS2  520   2023-09-08   
557-888 2 Kirkwood MO STLSMOWQDS2  520   2022-11-26   
557-888 3 Kirkwood MO STLSMOWQDS2  520   2022-11-26   
557-888 4 Kirkwood MO STLSMOWQDS2  520   2022-11-26   
557-888 8 Kirkwood MO   520   2026-05-04   
557-999 2 Sappington MO STLSMOWQDS2  520   2022-12-29   
557-999 4 Sappington MO STLSMOWQDS2  520   2023-08-10   
557-999 5 Sappington MO STLSMOWQDS2  520   2023-09-30   
573-203 0 Senath MO STLSMOWQDS2  520   2016-09-29   
573-203 1 Senath MO STLSMOWQDS2  520   2016-09-29   
573-208 1 Marble Hill MO STLSMOWQDS2  520   2022-01-01   
573-208 7 Marble Hill MO STLSMOWQDS2  520   2023-08-10   
573-219 6 Columbia MO CLMAMOXAXIX  521   2024-07-06   
573-226 2 Eminence MO STLSMO05XLX  520   2021-12-05   
573-226 4 Eminence MO STLSMOWQDS2  520   2021-10-26   
573-226 9 Eminence MO STLSMOWQDS2  520   2022-12-17   
573-229 0 Meta MO JFCYMOXAXHX  521   2017-05-02   
573-229 2 Meta MO JFCYMOXAXHX  521   2020-07-05   
573-229 3 Meta MO JFCYMOXAXHX  521   2020-07-05   
573-229 8 Meta MO JFCYMOXAXHX  521   2020-11-13   
573-229 9 Meta MO JFCYMOXAXHX  521   2020-11-13   

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 >>

Last updated: Tue, 16 Jun 2026 00:09:45 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.