NumberResearch Membership · Data 09/27/2026

Recent prefix assignments

341 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 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
2020-12-03 218-712 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 6 holders which blocks → ONVOY, LLC - MN 184D WARREN MN
2020-12-03 249-622 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Sault Ste. Marie —
2020-12-03 343-574 not yet reported which blocks → Bell Mobility 6574 Ottawa-Hull —
2020-12-03 548-240 not yet reported which blocks → Fibernetics Corporation 464D Melbourne —
2020-12-03 548-241 not yet reported which blocks → Fibernetics Corporation 464D Mount Brydges —
2020-12-03 548-242 not yet reported which blocks → Fibernetics Corporation 464D Wardsville —
2020-12-03 548-243 not yet reported which blocks → Fibernetics Corporation 464D Dorchester —
2020-12-03 548-244 not yet reported which blocks → Fibernetics Corporation 464D Harrietsville —
2020-12-03 548-245 not yet reported which blocks → Fibernetics Corporation 464D Thorndale —
2020-12-03 548-246 not yet reported which blocks → Fibernetics Corporation 464D Ilderton —
2020-12-03 548-247 not yet reported which blocks → Fibernetics Corporation 464D Kerwood —
2020-12-03 838-229 0XXX1XXX3XXX4XXX5XXX7XXX8XXX9XXX · 7 holders which blocks → PEERING HUB, INC. - NY 818H ARGYLE NY
2020-12-03 838-400 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 7 holders which blocks → FRACTEL, LLC 965H ROUND LAKE NY
2020-12-02 229-381 0–9 XXXall 10 · 3 holders which blocks → IP HORIZON LLC 515J ALBANY GA
2020-12-02 231-567 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E MUSKEGON MI
2020-12-02 314-857 0–9 XXXall 10 · 4 holders which blocks → IP HORIZON LLC 515J ST LOUIS MO
2020-12-02 417-605 0–9 XXXall 10 · 5 holders which blocks → IP HORIZON LLC 515J SPRINGFLD MO
2020-12-02 470-731 0–9 XXXall 10 · 3 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA NE GA
2020-12-02 478-310 0–9 XXXall 10 · 3 holders which blocks → IP HORIZON LLC 515J MACON GA
2020-12-02 539-243 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 5 holders which blocks → ONVOY, LLC - OK 409F WATTS OK
2020-12-02 548-239 not yet reported which blocks → Fibernetics Corporation 464D Belmont —
2020-12-02 573-852 0XXX1XXX2XXX3XXX · 3 holders which blocks → IP HORIZON LLC 515J LINN MO
2020-12-02 754-346 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - FL 937C DEERFLDBCH FL
2020-12-02 754-432 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - FL 937C POMPANOBCH FL
2020-12-02 762-260 0–9 XXXall 10 · 3 holders which blocks → IP HORIZON LLC 515J AUGUSTA GA
2020-12-02 816-814 0–9 XXXall 10 · 4 holders which blocks → IP HORIZON LLC 515J KANSASCITY MO
2020-12-02 912-556 0–9 XXXall 10 · 3 holders which blocks → IP HORIZON LLC 515J SAVANNAH GA
2020-12-02 980-340 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - NC 638E KANNAPOLIS NC
2020-12-01 209-807 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ANGELSCAMP CA
2020-12-01 343-575 not yet reported which blocks → Bell Mobility 6574 Ottawa-Hull —
2020-12-01 352-887 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - FL 937C MOUNT DORA FL
2020-12-01 430-966 0XXX1XXX2XXX3XXX4XXX6XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H CASH TX
2020-12-01 438-461 not yet reported which blocks → Bell Mobility 6574 Montreal —
2020-12-01 442-343 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 VICTORVL CA
2020-12-01 469-926 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCKINNEY TX
2020-12-01 539-995 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - OK 409F MCALESTER OK
2020-12-01 548-234 not yet reported which blocks → Fibernetics Corporation 464D Ailsa Craig —
2020-12-01 548-235 not yet reported which blocks → Fibernetics Corporation 464D Centralia —
2020-12-01 548-236 not yet reported which blocks → Fibernetics Corporation 464D Crediton —
2020-12-01 548-237 not yet reported which blocks → Fibernetics Corporation 464D Lucan —
2020-12-01 548-238 not yet reported which blocks → Fibernetics Corporation 464D Nairn —
2020-12-01 682-877 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H MANSFIELD TX
2020-12-01 862-658 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - NJ 637C NEWARK NJ
2020-12-01 873-458 not yet reported which blocks → Bell Mobility 6574 Waskaganish —
2020-12-01 873-991 not yet reported which blocks → TELUS Mobility 8303 Rouyn-Noranda —
2020-12-01 909-926 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 UPLAND CA
2020-12-01 936-285 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NAVASOTA TX
2020-12-01 939-406 0–9 XXXall 10 · 2 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 AGUADILLA PR
2020-12-01 939-409 0–9 XXXall 10 · 2 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 NARANJITO PR
2020-12-01 940-946 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H JUSTIN TX

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.