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
2021-07-07 929-633 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H NWYRCYZN13 NY
2021-07-07 929-644 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H NWYRCYZN05 NY
2021-07-07 929-677 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H NWYRCYZN03 NY
2021-07-07 929-844 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H NWYRCYZN06 NY
2021-07-07 949-881 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H NEWPORTBCH CA
2021-07-07 949-886 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H RNCHOVIEJO CA
2021-07-06 254-448 0XXX1XXX2XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - TX 903C BARTLETT TX
2021-07-06 254-467 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C EDDY TX
2021-07-06 316-786 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H LEON KS
2021-07-06 361-303 0XXX3XXX9XXX · 2 holders which blocks → ONVOY, LLC - TX 903C PREMONT TX
2021-07-06 409-274 0XXX1XXX2XXX4XXX5XXX6XXX · 3 holders which blocks → ONVOY, LLC - TX 903C FAIRMOUNT TX
2021-07-06 409-275 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C NEWTON TX
2021-07-06 409-278 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - TX 903C WARREN TX
2021-07-06 430-284 0XXX1XXX3XXX4XXX · 3 holders which blocks → ONVOY, LLC - TX 903C DOUGLASSVL TX
2021-07-06 432-314 0XXX1XXX2XXX4XXX · 3 holders which blocks → ONVOY, LLC - TX 903C IMPERIAL TX
2021-07-06 442-330 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ESCONDIDO CA
2021-07-06 620-799 0XXX7XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H BELPRE KS
2021-07-06 620-822 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H PITTSBURG KS
2021-07-06 807-390 not yet reported which blocks → Bell Mobility 6574 Kenora —
2021-07-06 867-412 not yet reported which blocks → Bell Mobility 6574 Yellowknife —
2021-07-06 873-641 not yet reported which blocks → Bell Mobility 6574 Sherbrooke —
2021-07-06 915-278 0XXX1XXX2XXX3XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - TX 903C SIERRABLNC TX
2021-07-06 920-506 0XXX7XXX · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H GREENBUSH WI
2021-07-06 936-313 3XXX4XXX which blocks → ONVOY, LLC - TX 903C RAYWOOD TX
2021-07-06 945-212 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - TX 903C CEDAR HILL TX
2021-07-06 949-671 0–9 XXXwhole prefix which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 IRVINE CA
2021-07-06 949-684 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 LAGUNA BCH CA
2021-07-02 225-457 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - LA 153F CLINTON LA
2021-07-02 231-376 0XXX6XXX7XXX · 3 holders which blocks → ONVOY, LLCV - MI 543C TWIN LAKE MI
2021-07-02 231-393 1XXX3XXX · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H LE ROY MI
2021-07-02 231-466 0XXX1XXX3XXX4XXX7XXX9XXX · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H EVART MI
2021-07-02 262-466 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 9 holders which blocks → FRACTEL, LLC 965H BURLINGTON WI
2021-07-02 262-566 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H ALLENTON WI
2021-07-02 262-699 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H MENOMONFLS WI
2021-07-02 269-304 0XXX5XXX · 2 holders which blocks → ONVOY, LLCV - MI 543C SAWYER MI
2021-07-02 269-396 3XXX5XXX6XXX which blocks → ONVOY SPECTRUM, LLC 624H SAWYER MI
2021-07-02 352-718 0–9 XXXall 10 · 5 holders which blocks → NUSO, LLC 478J OCALA FL
2021-07-02 414-432 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H MILWAUKZN5 WI
2021-07-02 414-966 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H MILWAUKZN1 WI
2021-07-02 431-396 not yet reported which blocks → Bell Mobility 6574 Winnipeg —
2021-07-02 437-517 not yet reported which blocks → Bell Mobility 6574 Toronto —
2021-07-02 438-595 not yet reported which blocks → Bell Mobility 6574 Montreal —
2021-07-02 440-795 0XXX2XXX3XXX4XXX5XXX6XXX9XXX · 4 holders which blocks → ONVOY, LLC - OH 464C KINGSVILLE OH
2021-07-02 475-276 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - CT 6624 STAMFORD CT
2021-07-02 501-496 0XXX1XXX2XXX3XXX4XXX6XXX7XXX · 6 holders which blocks → ONVOY, LLC - AR 348F REDFIELD AR
2021-07-02 534-758 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H SCANDINVIA WI
2021-07-02 608-505 0XXX1XXX5XXX6XXX8XXX · 4 holders which blocks → ONVOY, LLC - WI 225C POYNETTE WI
2021-07-02 608-506 0XXX1XXX2XXX3XXX6XXX7XXX8XXX · 7 holders which blocks → ONVOY, LLC - WI 225C WONEWOC WI
2021-07-02 608-946 0XXX1XXX2XXX3XXX6XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H EDGERTON WI
2021-07-02 680-860 0XXX6XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC- NY 384C EARLVILLE NY

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.