NumberResearch Membership · Data 09/29/2026

Recent prefix assignments

347 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/29/2026

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
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 23
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
2019-07-22 325-550 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - TX 903C EDEN TX
2019-07-22 325-666 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - TX 903C WINTERS TX
2019-07-22 325-770 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - TX 903C JUNCTION TX
2019-07-22 325-880 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C MENARD TX
2019-07-22 341-999 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H RICHMOND CA
2019-07-22 431-878 not yet reported which blocks → Westman Media Cooperative Ltd 120F Inglis —
2019-07-22 431-879 not yet reported which blocks → Westman Media Cooperative Ltd 120F Rapid City —
2019-07-22 480-597 0–9 XXXall 10 · 3 holders which blocks → CSC WIRELESS, LLC 425J PHOENIX AZ
2019-07-22 782-472 not yet reported which blocks → Bragg Communications Inc. 4878 Chelsea —
2019-07-22 782-487 not yet reported which blocks → Bragg Communications Inc. 4878 New Germany —
2019-07-19 226-807 not yet reported which blocks → Iristel Inc. 154E Hespeler —
2019-07-19 306-403 not yet reported which blocks → Iristel Inc. 154E Fort Qu'Appelle —
2019-07-19 332-219 0–9 XXXall 10 · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NWYRCYZN01 NY
2019-07-19 413-371 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - MA 892D BELCHERTN MA
2019-07-19 438-364 not yet reported which blocks → Bell Mobility 6574 Montreal —
2019-07-19 469-746 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 FERRIS TX
2019-07-19 506-909 not yet reported which blocks → Iristel Inc. 154E Grand Falls —
2019-07-19 551-400 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - NJ 637C CRAGMERE NJ
2019-07-19 640-500 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - NJ 637C MAYS LDG NJ
2019-07-19 640-600 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - NJ 637C MEDFORD NJ
2019-07-19 640-800 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - NJ 637C TUCKAHOE NJ
2019-07-19 640-900 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - NJ 637C SOMERS PT NJ
2019-07-19 647-614 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-07-19 825-606 not yet reported which blocks → Iristel Inc. 154E Grande Prairie —
2019-07-19 848-400 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - NJ 637C ENGLISHTN NJ
2019-07-19 848-420 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - NJ 637C SPRINGLAKE NJ
2019-07-19 848-500 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - NJ 637C DUNELLEN NJ
2019-07-19 848-600 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - NJ 637C MATAWAN NJ
2019-07-19 850-903 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - FL 937C PENSACOLA FL
2019-07-19 856-420 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - NJ 637C WOODBURY NJ
2019-07-19 862-420 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - NJ 637C BOONTON NJ
2019-07-19 862-860 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - NJ 637C CHATHAM NJ
2019-07-19 908-808 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - NJ 637C LINDEN NJ
2019-07-19 908-900 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - NJ 637C PLAINFIELD NJ
2019-07-18 236-705 not yet reported which blocks → Iristel Inc. 154E Fernie —
2019-07-18 249-202 not yet reported which blocks → Iristel Inc. 154E Espanola —
2019-07-18 423-977 0XXX1XXX2XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H CHATTNOOGA TN
2019-07-18 424-432 0–9 XXXall 10 · 6 holders which blocks → VOIP INNOVATIONS, LLC 597F AVALON CA
2019-07-18 506-908 not yet reported which blocks → Iristel Inc. 154E Florenceville —
2019-07-18 531-230 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - NE 549E COLUMBUS NE
2019-07-18 540-299 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H CHRISTISBG VA
2019-07-18 672-800 not yet reported which blocks → Iristel Inc. 154E Fort St. John —
2019-07-18 720-762 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 DENVER CO
2019-07-18 804-988 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H ASHLAND VA
2019-07-18 913-359 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - KS 986E KANSASCITY KS
2019-07-18 947-900 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H SOUTHFIELD MI
2019-07-18 971-358 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - OR 076F PORTLAND OR
2019-07-17 208-491 0XXX2XXX · 2 holders which blocks → COLUMBINE TELCO DBA SILVER STAR COMMUNICATIONS 2214 DRIGGS ID
2019-07-17 236-313 not yet reported which blocks → Bell Mobility 6574 South Kamloops —
2019-07-17 365-691 not yet reported which blocks → Iristel Inc. 154E Markham —

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/29/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.