NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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

The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.

Most active assignees, all time — NPA 626
PACIFIC BELL 116
T-MOBILE USA, INC. 106
NEW CINGULAR WIRELESS PCS, LLC 83
FRONTIER CALIFORNIA INC. 75
ONVOY, LLC - CA 43
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
Clear Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2020-11-13 626-944 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H ALHAMBRA CA
2020-11-13 626-989 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H PSDN PSDN CA
2020-07-10 626-889 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H COVINA CA
2020-06-01 626-686 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H EL MONTE CA
2020-06-01 626-842 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H ALHAMBRA CA
2020-06-01 626-885 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H COVINA CA
2020-06-01 626-946 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H AZUSA CA
2020-06-01 626-995 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H PSDN PSDN CA
2020-06-01 626-998 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H LA PUENTE CA
2020-03-12 626-514 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PSDN PSDN CA
2020-03-03 626-547 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 EL MONTE CA
2020-02-18 626-528 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ALHAMBRA CA
2020-02-10 626-504 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 AZUSA CA
2020-02-10 626-526 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 AZUSA CA
2020-02-04 626-496 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ALHAMBRA CA
2019-11-05 626-556 0–9 XXXall 10 · 7 holders which blocks → BLUIP, INC. 819H ALHAMBRA CA
2019-10-02 626-519 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ALHAMBRA CA
2019-08-07 626-546 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 ARCADIA CA
2019-07-26 626-517 0–9 XXXall 10 · 7 holders which blocks → T-MOBILE USA, INC. 6529 PSDN PSDN CA
2019-05-13 626-955 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H AZUSA CA
2019-05-02 626-516 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 AZUSA CA
2019-04-04 626-505 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 AZUSA CA
2019-03-19 626-567 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H PSDN PSDN CA
2019-03-15 626-501 0–9 XXXall 10 · 4 holders which blocks → METROPCS NETWORKS, LLC 899D EL MONTE CA
2019-01-25 626-655 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H COVINA CA
2019-01-25 626-778 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H LA PUENTE CA
2019-01-25 626-866 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H ALHAMBRA CA
2018-12-27 626-499 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 AZUSA CA
2018-10-15 626-489 0–9 XXXall 10 · 3 holders which blocks → METROPCS NETWORKS, LLC 899D EL MONTE CA
2018-09-04 626-479 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 COVINA CA
2018-07-31 626-477 not yet reported which blocks → SHELCOMM 0051 ALHAMBRA CA
2018-04-13 626-469 0–9 XXXall 10 · 5 holders which blocks → METROPCS NETWORKS, LLC 899D PSDN PSDN CA
2018-03-09 626-424 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E ALHAMBRA CA
2018-02-23 626-631 0–9 XXXall 10 · 4 holders which blocks → EXIANT COMMUNICATIONS LLC 114J ARCADIA CA
2018-01-04 626-557 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 ALHAMBRA CA
2017-10-03 626-418 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ALHAMBRA CA
2017-09-22 626-412 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E COVINA CA
2017-08-22 626-550 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - CA 649C ALHAMBRA CA
2017-08-09 626-406 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 EL MONTE CA
2017-07-28 626-366 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 ALHAMBRA CA
2017-06-08 626-268 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F ARCADIA CA
2017-05-26 626-206 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 COVINA CA
2017-04-04 626-545 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ALHAMBRA CA
2017-01-16 626-525 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ALHAMBRA CA
2017-01-13 626-503 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 ALHAMBRA CA
2016-12-23 626-777 0–9 XXXwhole prefix which blocks → PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F ARCADIA CA
2016-11-18 626-764 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LA PUENTE CA
2016-11-11 626-413 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 LA PUENTE CA
2016-11-11 626-426 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 COVINA CA
2016-10-10 626-495 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - CA 649C ALHAMBRA CA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.