NumberResearch Membership · Data 09/26/2026

Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026

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 21
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
2021-06-07 716-721 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H WANAKAH NY
2021-06-07 716-747 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → ONVOY SPECTRUM, LLC 624H YOUNGSTOWN NY
2021-06-07 716-760 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H WILSON NY
2021-06-07 725-334 0–9 XXXwhole prefix which blocks → ONVOY, LLC - NV 029F LAS VEGAS NV
2021-06-07 743-762 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J KERNERSVL NC
2021-06-07 782-514 not yet reported which blocks → Fibernetics Corporation 464D Pugwash —
2021-06-07 782-515 not yet reported which blocks → Fibernetics Corporation 464D River Hebert —
2021-06-07 782-516 not yet reported which blocks → Fibernetics Corporation 464D Riverport —
2021-06-07 782-517 not yet reported which blocks → Fibernetics Corporation 464D Sheet Harbour —
2021-06-07 782-518 not yet reported which blocks → Fibernetics Corporation 464D Shubenacadie —
2021-06-07 782-519 not yet reported which blocks → Fibernetics Corporation 464D Southampton —
2021-06-07 782-520 not yet reported which blocks → Fibernetics Corporation 464D Springhill —
2021-06-07 782-521 not yet reported which blocks → Fibernetics Corporation 464D St. Margarets —
2021-06-07 785-570 0XXX1XXX2XXX3XXX4XXX · 4 holders which blocks → ONVOY, LLC - KS 205F ALMENA KS
2021-06-07 785-661 0XXX1XXX2XXX3XXX8XXX · 4 holders which blocks → ONVOY, LLC - KS 205F ATWOOD KS
2021-06-07 786-783 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 PERRINE FL
2021-06-07 816-485 5XXX6XXX7XXX9XXX · 2 holders which blocks → ONVOY, LLC - MO 093F AGENCY MO
2021-06-07 903-977 0XXX1XXX7XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F NEWSMMRFLD TX
2021-06-07 913-423 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - KS 205F BASEHOR KS
2021-06-07 913-430 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - KS 205F BONNER SPG KS
2021-06-07 913-513 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - KS 205F MCLOUTH KS
2021-06-07 980-944 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 SALISBURY NC
2021-06-07 986-289 1XXX4XXX5XXX · 3 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K KENDRICK ID
2021-06-04 206-844 0–9 XXXwhole prefix which blocks → ONVOY, LLC - WA 483E SEATTLE WA
2021-06-04 314-673 0–9 XXXall 10 · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H CREVECOEUR MO
2021-06-04 337-556 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - LA 153F CHURCH PT LA
2021-06-04 364-365 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H CECILIA KY
2021-06-04 367-321 not yet reported which blocks → Bell Mobility 6574 Quebec —
2021-06-04 385-433 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - UT 871E SALT LAKE UT
2021-06-04 484-570 0XXX3XXX4XXX5XXX6XXX9XXX · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H NEWTRIPOLI PA
2021-06-04 484-610 0–9 XXXall 10 · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H OXFORD PA
2021-06-04 484-670 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H SCHWENKSVL PA
2021-06-04 484-780 6XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H UPBLCKEDDY PA
2021-06-04 501-462 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - AR 348F SEARCY AR
2021-06-04 548-355 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Listowel —
2021-06-04 548-550 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Listowel —
2021-06-04 548-551 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Listowel —
2021-06-04 548-552 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Listowel —
2021-06-04 548-553 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Listowel —
2021-06-04 548-556 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Listowel —
2021-06-04 571-686 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - VA 138E BRADDOCK VA
2021-06-04 573-580 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H BELLE MO
2021-06-04 581-738 not yet reported which blocks → Bell Mobility 6574 Quebec —
2021-06-04 606-352 0XXX1XXX3XXX7XXX · 4 holders which blocks → ONVOY, LLC - KY 896E BENHAMLNCH KY
2021-06-04 615-909 0–9 XXXall 10 · 4 holders which blocks → VONAGE AMERICA LLC 197D WHITEHOUSE TN
2021-06-04 619-945 0–9 XXXwhole prefix which blocks → COMCAST PHONE OF CALIFORNIA, LLC 394L LA MESA CA
2021-06-04 636-635 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H CEDAR HILL MO
2021-06-04 659-232 0–9 XXXall 10 · 5 holders which blocks → VONAGE AMERICA LLC 197D GARDENDALE AL
2021-06-04 669-599 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H GILROY CA
2021-06-04 689-698 0–9 XXXwhole prefix which blocks → ONVOY, LLC - FL 937C ORLANDO FL

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.