NumberResearch Membership · Data 09/18/2026

Recent prefix assignments

35 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/18/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

Which carriers received which NPA-NXX prefixes, and where. Assignments are initial assignments from NANPA records — because of number portability, the current serving carrier of individual numbers may differ. For finer-grained activity, see the thousands-block view above.

Most active assignees, last 30 days
ONVOY, LLC - CA 35
New assignments by month Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025 Oct 2025
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXAssigneeOCNRate centerState
2015-12-03 442-276 ONVOY, LLC - CA 649C PINYON CA
2015-12-01 213-277 ONVOY, LLC - CA 649C LSAN DA 10 CA
2015-12-01 323-613 ONVOY, LLC - CA 649C LSAN DA 03 CA
2015-12-01 510-319 ONVOY, LLC - CA 649C FRNK OLIVR CA
2015-12-01 628-201 ONVOY, LLC - CA 649C SNFC CNTRL CA
2015-12-01 628-243 ONVOY, LLC - CA 649C SAN RAFAEL CA
2015-11-23 323-310 ONVOY, LLC - CA 649C LSAN DA 06 CA
2015-11-23 657-279 ONVOY, LLC - CA 649C SANTA ANA CA
2015-11-20 559-206 ONVOY, LLC - CA 649C FRESNO CA
2015-11-20 619-304 ONVOY, LLC - CA 649C SNDG SNDG CA
2015-11-20 669-201 ONVOY, LLC - CA 649C SNJS WEST CA
2015-11-20 669-202 ONVOY, LLC - CA 649C SNJS SOUTH CA
2015-11-20 916-249 ONVOY, LLC - CA 649C SCRM MAIN CA
2015-08-27 657-293 ONVOY, LLC - CA 649C SILVERADO CA
2015-08-17 831-777 ONVOY, LLC - CA 649C SANTA CRUZ CA
2015-06-23 619-832 ONVOY, LLC - CA 649C LA MESA CA
2015-06-16 925-393 ONVOY, LLC - CA 649C WALNUT CRK CA
2015-04-06 424-349 ONVOY, LLC - CA 649C CMTN CMTN CA
2015-03-26 628-500 ONVOY, LLC - CA 649C SAN RAFAEL CA
2015-03-25 213-322 ONVOY, LLC - CA 649C LSAN DA 10 CA
2015-03-25 650-822 ONVOY, LLC - CA 649C SSNFRNCSCO CA
2015-03-25 669-350 ONVOY, LLC - CA 649C SNJS SOUTH CA
2015-03-23 424-339 ONVOY, LLC - CA 649C SAN PEDRO CA
2015-03-20 562-850 ONVOY, LLC - CA 649C LONG BEACH CA
2015-03-17 559-899 ONVOY, LLC - CA 649C FRESNO CA
2015-03-17 628-300 ONVOY, LLC - CA 649C SNFC CNTRL CA
2015-03-17 657-699 ONVOY, LLC - CA 649C SANTA ANA CA
2015-03-17 916-890 ONVOY, LLC - CA 649C SCRM NORTH CA
2014-12-09 909-675 ONVOY, LLC - CA 649C CLAREMONT CA
2014-12-08 510-694 ONVOY, LLC - CA 649C OKLD ALMD CA
2014-12-08 805-793 ONVOY, LLC - CA 649C OXNARD CA
2014-12-05 858-239 ONVOY, LLC - CA 649C SNDG MRMS CA
2014-12-01 442-254 ONVOY, LLC - CA 649C FALLBROOK CA
2014-12-01 818-805 ONVOY, LLC - CA 649C CANOGAPARK CA
2014-11-25 213-335 ONVOY, LLC - CA 649C LSAN DA 01 CA
2014-11-24 323-676 ONVOY, LLC - CA 649C LSAN DA 08 CA
2014-11-24 323-894 ONVOY, LLC - CA 649C LSAN DA 06 CA
2014-11-24 619-728 ONVOY, LLC - CA 649C EL CAJON CA
2014-11-24 858-264 ONVOY, LLC - CA 649C SNDG LVTA CA
2014-11-21 669-266 ONVOY, LLC - CA 649C SNJS WEST CA
2014-11-03 510-674 ONVOY, LLC - CA 649C HAYWARD CA
2014-10-01 628-400 ONVOY, LLC - CA 649C SNFC CNTRL CA
2014-10-01 628-600 ONVOY, LLC - CA 649C SNFC CNTRL CA
2014-10-01 628-800 ONVOY, LLC - CA 649C SNFC CNTRL CA
2014-09-30 628-444 ONVOY, LLC - CA 649C SNFC CNTRL CA
2014-09-29 628-222 ONVOY, LLC - CA 649C SNFC CNTRL CA
2014-07-07 949-537 ONVOY, LLC - CA 649C IRVINE CA
2014-06-16 916-805 ONVOY, LLC - CA 649C FOLSOM CA
2014-05-02 323-745 ONVOY, LLC - CA 649C LSAN DA 14 CA
2014-05-02 424-365 ONVOY, LLC - CA 649C W ANGELES CA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/18/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.