NumberResearch Membership · Data 09/27/2026

Recent prefix assignments

334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026

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, last 30 days
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 26
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 22
ONVOY, LLC - CA 19
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-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2020-11-02 901-571 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2020-11-02 949-605 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SADLBK VLY CA
2020-11-02 956-604 0–9 XXXwhole prefix which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7148 BROWNSVL TX
2020-10-30 431-842 not yet reported which blocks → Bell Mobility 6574 Winnipeg —
2020-10-30 437-276 not yet reported which blocks → Bell Mobility 6574 Toronto —
2020-10-30 437-628 not yet reported which blocks → Bell Mobility 6574 Toronto —
2020-10-30 438-436 not yet reported which blocks → Bell Mobility 6574 Montreal —
2020-10-30 469-945 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - TX 903C ITALY TX
2020-10-30 475-312 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - CT 6624 BRIDGEPORT CT
2020-10-30 505-397 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 GALLUP NM
2020-10-30 520-246 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 TUCSON AZ
2020-10-30 564-464 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - WA 483E OLYMPIA WA
2020-10-30 825-344 not yet reported which blocks → Bell Mobility 6574 Calgary —
2020-10-30 825-715 not yet reported which blocks → Bell Mobility 6574 Calgary —
2020-10-29 254-545 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - TX 903C BRECKENRDG TX
2020-10-29 326-297 0–9 XXXwhole prefix which blocks → TON80 COMMUNICATIONS, LLC 516J BEAVERCREK OH
2020-10-29 346-463 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - TX 903C ALVIN TX
2020-10-29 431-843 not yet reported which blocks → Bell Mobility 6574 Winnipeg —
2020-10-29 437-275 not yet reported which blocks → Bell Mobility 6574 Toronto —
2020-10-29 438-435 not yet reported which blocks → Bell Mobility 6574 Montreal —
2020-10-29 438-484 not yet reported which blocks → Bell Mobility 6574 Montreal —
2020-10-29 475-837 0–9 XXXall 10 · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J NEW HAVEN CT
2020-10-29 484-743 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 ALLENTOWN PA
2020-10-29 520-650 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - AZ 630E WHITLOW AZ
2020-10-29 564-200 0–9 XXXall 10 · 6 holders which blocks → IP HORIZON LLC 515J OLYMPIA WA
2020-10-29 602-756 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 PHOENIX AZ
2020-10-29 605-989 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → NUSO, LLC 478J NOVALENTIN SD
2020-10-29 707-856 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2020-10-29 825-342 not yet reported which blocks → Bell Mobility 6574 Calgary —
2020-10-29 912-514 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E WAYCROSS GA
2020-10-29 940-945 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - TX 903C AUBREY TX
2020-10-29 970-792 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 FT COLLINS CO
2020-10-28 209-760 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ANGELSCAMP CA
2020-10-28 236-647 not yet reported which blocks → Bell West Inc. 2933 Sechelt —
2020-10-28 346-449 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 CHANNELVW TX
2020-10-28 346-450 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 SUGAR LAND TX
2020-10-28 346-466 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → ONVOY, LLC - TX 903C HIGHLANDS TX
2020-10-28 430-440 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → ONVOY, LLC - TX 903C WOLFE CITY TX
2020-10-28 431-844 not yet reported which blocks → Bell Mobility 6574 Winnipeg —
2020-10-28 437-274 not yet reported which blocks → Bell Mobility 6574 Toronto —
2020-10-28 437-627 not yet reported which blocks → Bell Mobility 6574 Toronto —
2020-10-28 438-482 not yet reported which blocks → Bell Mobility 6574 Montreal —
2020-10-28 469-915 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - TX 903C PLANO TX
2020-10-28 469-921 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GRANDPRARI TX
2020-10-28 562-515 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 LONG BEACH CA
2020-10-28 725-241 0–9 XXXall 10 · 2 holders which blocks → NUSO, LLC 478J LAS VEGAS NV
2020-10-28 737-332 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - TX 903C BURNET TX
2020-10-28 737-344 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C SAN MARCOS TX
2020-10-28 825-338 not yet reported which blocks → Bell Mobility 6574 Calgary —
2020-10-28 825-708 not yet reported which blocks → Bell Mobility 6574 Calgary —

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.