NumberResearch Membership · Data 09/26/2026

Recent prefix assignments

360 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 28
ONVOY, LLC - CA 26
NEW CINGULAR WIRELESS PCS, LLC - IL 26
Rogers Communications Canada Inc. (Wireless) 23
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
2021-07-15 628-377 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H IGNACIO CA
2021-07-15 628-577 2XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → FRACTEL, LLC 965H NICASIO CA
2021-07-15 628-677 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H MILLVALLEY CA
2021-07-15 628-699 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H SAUSALITO CA
2021-07-15 628-866 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H BELVEDERE CA
2021-07-15 672-212 not yet reported which blocks → Iristel Inc. 154E Vancouver —
2021-07-15 689-241 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 KISSIMMEE FL
2021-07-15 715-992 0XXX8XXX · 2 holders which blocks → ONVOY, LLC - WI 225C MONTDU LAC WI
2021-07-15 719-877 0–9 XXXall 10 · 6 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J PUEBLO CO
2021-07-15 747-966 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H SNFN GRHL CA
2021-07-15 774-599 0XXX1XXX2XXX5XXX7XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H MARLBORO MA
2021-07-15 774-699 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H PLYMOUTH MA
2021-07-15 786-754 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 MIAMI FL
2021-07-15 807-391 not yet reported which blocks → Bell Mobility 6574 Kenora —
2021-07-15 840-300 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H REDLANDS CA
2021-07-15 840-799 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H RIALTO CA
2021-07-15 840-877 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H MARSHALL CA
2021-07-15 840-899 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H HIGHLAND CA
2021-07-15 840-977 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H CLAREMONT CA
2021-07-15 867-413 not yet reported which blocks → Bell Mobility 6574 Yellowknife —
2021-07-15 873-642 not yet reported which blocks → Bell Mobility 6574 Sherbrooke —
2021-07-15 904-690 0–9 XXXall 10 · 5 holders which blocks → POWERTEL JACKSONVILLE LICENSES, INC. 7472 FERNADNBCH FL
2021-07-15 920-641 0–9 XXXall 10 · 8 holders which blocks → PENINSULA FIBER NETWORK, LLC - WI 841H GREEN BAY WI
2021-07-15 928-407 0XXX which blocks → TELNYX LLC 073H WINDOWROCK AZ
2021-07-14 224-394 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC 224C BARTLETT IL
2021-07-14 224-395 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC 224C BENSENVL IL
2021-07-14 305-339 0–9 XXXwhole prefix which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 KEYS FL
2021-07-14 307-346 0–9 XXXall 10 · 3 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J CHEYENNE WY
2021-07-14 318-783 0XXX3XXX · 2 holders which blocks → ONVOY, LLC - LA 749E BORDELONVL LA
2021-07-14 318-784 0XXX which blocks → ONVOY, LLC - LA 749E BIG CANE LA
2021-07-14 318-850 0XXX1XXX2XXX5XXX9XXX · 4 holders which blocks → ONVOY, LLC - LA 749E PLAUCHEVL LA
2021-07-14 334-820 0–9 XXXall 10 · 4 holders which blocks → POWERTEL BIRMINGHAM LICENSES, INC. 7475 EUFAULA AL
2021-07-14 447-205 5XXX6XXX7XXX · 2 holders which blocks → ONVOY, LLC 224C GREENUP IL
2021-07-14 501-460 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - AR 348F GREENBRIER AR
2021-07-14 608-674 0XXX1XXX2XXX3XXX4XXX5XXX8XXX · 4 holders which blocks → ONVOY, LLC - WI 225C MILTON WI
2021-07-14 608-702 0XXX1XXX2XXX3XXX4XXX6XXX7XXX · 4 holders which blocks → ONVOY, LLC - WI 225C PARDEEVL WI
2021-07-14 715-734 2XXX4XXX7XXX · 2 holders which blocks → ONVOY, LLC - WI 225C STARPRAIRI WI
2021-07-14 725-252 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 LAUGHLIN NV
2021-07-14 774-491 0XXX4XXX · 2 holders which blocks → TELNYX LLC 073H MATTAPOSTT MA
2021-07-14 779-342 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC 224C DWIGHT IL
2021-07-14 864-744 0–9 XXXwhole prefix which blocks → TELEPORT COMMUNICATIONS AMERICA SC- LLC 635C GREENVILLE SC
2021-07-14 872-285 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC 224C CHICGOZN08 IL
2021-07-14 913-407 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - KS 205F KANSASCITY KS
2021-07-14 920-514 1XXX4XXX8XXX · 3 holders which blocks → ONVOY, LLC - WI 225C COLEMAN WI
2021-07-14 920-537 2XXX7XXX · 2 holders which blocks → ONVOY, LLC - WI 225C HORICON WI
2021-07-14 920-546 4XXX6XXX · 2 holders which blocks → ONVOY, LLC - WI 225C HUSTISFORD WI
2021-07-14 920-575 0XXX5XXX7XXX · 3 holders which blocks → ONVOY, LLC - WI 225C JUNEAU WI
2021-07-14 920-612 0XXX2XXX3XXX · 3 holders which blocks → ONVOY, LLC - WI 225C REESEVILLE WI
2021-07-13 254-468 0XXX2XXX8XXX · 2 holders which blocks → ONVOY, LLC - TX 903C HOLLAND TX
2021-07-13 254-473 3XXX4XXX which blocks → ONVOY, LLC - TX 903C MOFFAT TX

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.