NumberResearch Membership · Data 09/28/2026

Recent prefix assignments

334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/28/2026

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 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
2019-10-10 667-662 0XXX1XXX2XXX4XXX6XXX7XXX9XXX · 4 holders which blocks → ONVOY, LLC - MD 876D SMITH IS MD
2019-10-10 667-663 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - MD 876D OCEAN CITY MD
2019-10-10 667-664 0XXX2XXX4XXX6XXX7XXX9XXX · 4 holders which blocks → ONVOY, LLC - MD 876D TRAPPE MD
2019-10-10 706-642 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - GA 8392 MONTICELLO GA
2019-10-10 708-855 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H CHICAGOHTS IL
2019-10-10 715-666 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → ONVOY, LLC - WI 225C MARINETTE WI
2019-10-10 725-527 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - NV 029F LAUGHLIN NV
2019-10-10 727-294 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 CLEARWATER FL
2019-10-10 743-500 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - NC 638E SAXAPAHAW NC
2019-10-10 765-666 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H KIRKLIN IN
2019-10-10 779-465 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → FRACTEL, LLC 965H BRAIDWOOD IL
2019-10-10 825-516 not yet reported which blocks → TELUS 8084 High Level —
2019-10-10 825-517 not yet reported which blocks → TELUS 8084 Devon —
2019-10-10 854-500 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H CHARLESTON SC
2019-10-10 854-544 0XXX1XXX4XXX5XXX7XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H BENNETTSVL SC
2019-10-10 854-600 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H MYRTLE BCH SC
2019-10-10 854-666 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H LAKE CITY SC
2019-10-10 854-758 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → FRACTEL, LLC 965H DARLINGTON SC
2019-10-10 864-755 1XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → FRACTEL, LLC 965H CHAPPELLS SC
2019-10-10 864-788 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H CENTRAL SC
2019-10-10 870-860 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - AR 348F HARDY AR
2019-10-10 920-690 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - WI 225C LTL CHUTE WI
2019-10-10 920-890 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → ONVOY, LLC - WI 225C EGG HARBOR WI
2019-10-10 980-400 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - NC 638E CHNGRVLNDS NC
2019-10-10 980-600 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - NC 638E TROUTMAN NC
2019-10-10 980-981 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - NC 638E BESSEMERCY NC
2019-10-10 980-982 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - NC 638E STONYPOINT NC
2019-10-10 984-983 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - NC 638E MEBANE NC
2019-10-09 252-710 0–9 XXXall 10 · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H ROCKYMOUNT NC
2019-10-09 267-865 0–9 XXXall 10 · 5 holders which blocks → CSC WIRELESS, LLC 425J PHLDLPHZN1 PA
2019-10-09 272-235 0–9 XXXall 10 · 6 holders which blocks → CSC WIRELESS, LLC 425J SCRANTON PA
2019-10-09 346-710 0–9 XXXall 10 · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H BAYTOWN TX
2019-10-09 413-373 0XXX1XXX3XXX4XXX6XXX · 4 holders which blocks → COMCAST IP PHONE, LLC 318J CUMMINGTON MA
2019-10-09 434-231 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - VA 138E SCHUYLER VA
2019-10-09 458-710 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - OR 750E COOS BAY OR
2019-10-09 469-783 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
2019-10-09 540-706 0–9 XXXall 10 · 5 holders which blocks → CSC WIRELESS, LLC 425J FREDECKSBG VA
2019-10-09 631-634 0–9 XXXall 10 · 7 holders which blocks → CABLEVISION LIGHTPATH, INC. - NY 7126 COMMACK NY
2019-10-09 657-398 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HUNTITNBCH CA
2019-10-09 659-222 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - AL 604E DORA AL
2019-10-09 667-273 0–9 XXXall 10 · 4 holders which blocks → CSC WIRELESS, LLC 425J PIKESVILLE MD
2019-10-09 681-283 0–9 XXXall 10 · 6 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 MARTINSBG WV
2019-10-09 689-212 0–9 XXXall 10 · 5 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 KISSIMMEE FL
2019-10-09 720-678 0–9 XXXall 10 · 5 holders which blocks → CSC WIRELESS, LLC 425J DENVER CO
2019-10-09 737-710 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H AUSTIN TX
2019-10-09 754-250 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 FTLAUDERDL FL
2019-10-09 786-729 0–9 XXXwhole prefix which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 MIAMI FL
2019-10-09 804-566 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 MIDLOTHIAN VA
2019-10-09 925-430 0–9 XXXall 10 · 5 holders which blocks → COMCAST PHONE OF CALIFORNIA, LLC 394L WALNUT CRK CA
2019-10-09 971-910 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H BEAVERTON OR

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/28/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.