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 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 >>

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
557-248 8 St Louis MO STLSMOWQDS2  520   2026-06-22   
557-248 9 St Louis MO STLSMOWQDS2  520   2026-06-22   
557-249 A Ladue MO STLSMOWQDS2  520   2026-03-06   
557-249 0 Ladue MO STLSMOWQDS2  520   2026-03-06   
557-249 1 Ladue MO STLSMOWQDS2  520   2026-03-06   
557-249 2 Ladue MO STLSMOWQDS2  520   2026-05-09   
557-249 3 Ladue MO STLSMOWQDS2  520   2026-05-09   
557-249 5 Ladue MO STLSMOWQDS2  520   2026-05-09   
557-249 6 Ladue MO STLSMOWQDS2  520   2026-05-09   
557-249 7 Ladue MO STLSMOWQDS2  520   2026-03-22   
557-249 8 Ladue MO STLSMOWQDS2  520   2026-03-09   
557-249 9 Ladue MO STLSMOWQDS2  520   2026-03-22   
557-250 8 St Louis MO STLSMOWQDS2  520   2026-04-29   
557-250 9 St Louis MO STLSMOWQDS2  520   2026-04-29   
557-251 0 Kirkwood MO STLSMOWQDS2  520   2026-04-13   
557-251 1 Kirkwood MO STLSMOWQDS2  520   2026-05-03   
557-253 0 Kirkwood MO STLSMOWQDS2  520   2026-07-20   
557-253 1 Kirkwood MO STLSMOWQDS2  520   2026-07-20   
557-253 2 Kirkwood MO STLSMOWQDS2  520   2026-07-20   
557-253 3 Kirkwood MO STLSMOWQDS2  520   2026-07-20   
557-253 4 Kirkwood MO STLSMOWQDS2  520   2026-07-20   
557-255 A Ladue MO STLSMOWQDS2  520   2026-07-20   
557-255 0 Ladue MO STLSMOWQDS2  520   2026-07-20   
557-255 1 Ladue MO STLSMOWQDS2  520   2026-07-20   
557-255 2 Ladue MO STLSMOWQDS2  520   2026-07-20   
557-255 3 Ladue MO STLSMOWQDS2  520   2026-07-20   
557-255 4 Ladue MO STLSMOWQDS2  520   2026-07-20   
557-255 5 Ladue MO STLSMOWQDS2  520   2026-07-20   
557-255 6 Ladue MO STLSMOWQDS2  520   2026-07-21   
557-255 7 Ladue MO STLSMOWQDS2  520   2026-07-21   
557-256 A Mehlville MO STLSMOWQDS2  520   2026-07-20   
557-256 0 Mehlville MO STLSMOWQDS2  520   2026-07-20   
557-256 1 Mehlville MO STLSMOWQDS2  520   2026-07-20   
557-256 7 Mehlville MO   520   2026-09-19   
557-256 8 Mehlville MO   520   2026-09-19   
557-256 9 Mehlville MO   520   2026-09-19   
557-257 A Creve Coeur MO   520   2026-08-29   
557-257 0 Creve Coeur MO   520   2026-08-29   
557-257 1 Creve Coeur MO   520   2026-08-29   
557-257 2 Creve Coeur MO   520   2026-08-29   
557-258 A Oakville MO   520   2026-08-29   
557-258 0 Oakville MO   520   2026-08-29   
557-259 A Sappington MO   520   2026-08-29   
557-259 0 Sappington MO   520   2026-08-29   
557-261 0 Kirkwood MO   520   2026-10-12   
557-261 1 Kirkwood MO   520   2026-10-12   
557-261 2 Kirkwood MO   520   2026-10-12   
557-333 A Sappington MO STLSMOWQDS2  520   2025-09-08   
557-333 0 Sappington MO STLSMOWQDS2  520   2025-09-08   
557-333 1 Sappington MO STLSMOWQDS2  520   2025-11-28   

<< 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 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 >>

Last updated: Tue, 01 Sep 2026 00:40:05 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.