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
2018-09-11 236-489 not yet reported which blocks → Videotron Ltd. 383F Courtenay —
2018-09-11 236-507 not yet reported which blocks → Videotron Ltd. 383F Campbell River —
2018-09-11 236-517 not yet reported which blocks → Videotron Ltd. 383F Comox —
2018-09-11 236-557 not yet reported which blocks → Videotron Ltd. 383F Cumberland —
2018-09-11 236-567 not yet reported which blocks → Videotron Ltd. 383F Oyster Bay —
2018-09-11 334-789 0XXX1XXX2XXX3XXX5XXX · 5 holders which blocks → TROY CABLEVISION, INC. - AL 208D ASHFORD AL
2018-09-11 339-213 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 DEDHAM MA
2018-09-11 458-854 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OR 750E THE DALLES OR
2018-09-11 551-557 0–9 XXXall 10 · 8 holders which blocks → BLUEBIRD COMMUNICATIONS, LLC - NJ 999H PARK RIDGE NJ
2018-09-11 603-450 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 CONCORD NH
2018-09-11 657-360 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HUNTITNBCH CA
2018-09-11 719-789 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CO 078F CALHAN CO
2018-09-10 217-699 0XXX1XXX3XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC 224C BEMENT IL
2018-09-10 470-451 0–9 XXXall 10 · 2 holders which blocks → VOIP INNOVATIONS, LLC 597F ATLANTA GA
2018-09-10 507-620 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TEKSTAR COMMUNICATIONS, INC. 4156 WESTBROOK MN
2018-09-10 513-799 0–9 XXXall 10 · 2 holders which blocks → INVOXIO INCORPORATED 158H CINCINNATI OH
2018-09-10 520-759 0–9 XXXall 10 · 7 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 CASAGRANDE AZ
2018-09-10 520-779 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - AZ 587F WILLCOX AZ
2018-09-10 581-855 not yet reported which blocks → Videotron Ltd. 8306 Montmagny —
2018-09-10 725-207 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NV 075F LAS VEGAS NV
2018-09-10 786-633 0–9 XXXall 10 · 4 holders which blocks → VOIP INNOVATIONS, LLC 597F MIAMI FL
2018-09-10 940-283 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - TX 903C BURKBURNTT TX
2018-09-07 319-582 0–9 XXXall 10 · 4 holders which blocks → AIRESPRING, INC. 996H CEDAR RPDS IA
2018-09-07 386-306 0XXX1XXX2XXX3XXX4XXX5XXX6XXX · 4 holders which blocks → ONVOY, LLC - FL 937C FLSHSBYRNH FL
2018-09-07 681-661 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - WV 449F CHRLSTNZN1 WV
2018-09-07 762-216 0XXX1XXX2XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → ONVOY, LLC - GA 067D UNIONPOINT GA
2018-09-07 762-722 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - GA 067D JASPER GA
2018-09-07 813-519 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - FL 937C TAMPACEN FL
2018-09-07 912-900 0–9 XXXall 10 · 5 holders which blocks → INVOXIO INCORPORATED 158H BLACKSHEAR GA
2018-09-07 915-516 0–9 XXXall 10 · 3 holders which blocks → AMA COMM., LLC DBA AMA*TECHTEL COMMUNICATIONS-TX 0132 EL PASO TX
2018-09-07 971-399 0–9 XXXall 10 · 8 holders which blocks → INVOXIO INCORPORATED 158H FALLS CITY OR
2018-09-07 971-799 1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → INVOXIO INCORPORATED 158H WESTPORT OR
2018-09-06 207-506 0XXX2XXX3XXX4XXX5XXX6XXX · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - ME 882G LIMERICK ME
2018-09-06 229-922 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - GA 067D FITZGERALD GA
2018-09-06 346-363 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SATSUMA TX
2018-09-06 365-268 not yet reported which blocks → Rogers Communications Canada Inc. (Cable) 743B Newmarket —
2018-09-06 479-974 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - AR 348F FORT SMITH AR
2018-09-06 504-369 0–9 XXXall 10 · 3 holders which blocks → AIRESPRING, INC. 996H NEWORLEANS LA
2018-09-06 506-883 not yet reported which blocks → Rogers Communications Canada Inc. (Cable) 743B Fredericton —
2018-09-06 548-689 not yet reported which blocks → Rogers Communications Canada Inc. (Cable) 743B London —
2018-09-06 548-690 not yet reported which blocks → Rogers Communications Canada Inc. (Cable) 743B London —
2018-09-06 581-854 not yet reported which blocks → Videotron Ltd. 8306 Thetford Mines —
2018-09-06 629-227 0–9 XXXall 10 · 2 holders which blocks → AIRESPRING, INC. 996H NASHVILLE TN
2018-09-06 631-607 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 7 holders which blocks → TC SYSTEMS, INC. - NY 7140 WADING RIV NY
2018-09-06 639-699 not yet reported which blocks → SaskTel Mobility 9868 Creighton —
2018-09-06 732-712 0–9 XXXall 10 · 5 holders which blocks → BLUEBIRD COMMUNICATIONS, LLC - NJ 999H NEWBRNSWCK NJ
2018-09-06 765-632 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - IN 105F ALEXANDRIA IN
2018-09-06 873-667 not yet reported which blocks → Videotron Ltd. 8306 Compton —
2018-09-06 980-680 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - NC 638E CONCORD NC
2018-09-05 262-230 0–9 XXXall 10 · 7 holders which blocks → AIRESPRING, INC. 996H MILWAUKZN2 WI

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.