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
2020-12-08 945-910 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C DALLAS TX
2020-12-08 956-910 0XXX2XXX8XXX9XXX · 2 holders which blocks → NUSO, LLC 478J HARLINGEN TX
2020-12-08 979-810 0XXX1XXX2XXX3XXX8XXX which blocks → ONVOY, LLC - TX 903C BRYAN TX
2020-12-07 209-816 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - CA 649C LODI CA
2020-12-07 213-823 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - CA 649C LSAN DA 13 CA
2020-12-07 239-933 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - FL 937C FORT MYERS FL
2020-12-07 279-279 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - CA 649C RSVL CTHT CA
2020-12-07 339-255 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - MA 892D WEYMOUTH MA
2020-12-07 341-314 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - CA 649C ELSBR-PINL CA
2020-12-07 352-810 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - FL 937C GAINESVL FL
2020-12-07 386-610 0XXX1XXX2XXX3XXX4XXX6XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - FL 937C DAYTONABCH FL
2020-12-07 437-278 not yet reported which blocks → Bell Mobility 6574 Toronto —
2020-12-07 437-631 not yet reported which blocks → Bell Mobility 6574 Toronto —
2020-12-07 438-439 not yet reported which blocks → Bell Mobility 6574 Montreal —
2020-12-07 438-487 not yet reported which blocks → Bell Mobility 6574 Montreal —
2020-12-07 475-281 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - CT 6624 ANSONIDRBY CT
2020-12-07 479-408 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SPRINGDALE AR
2020-12-07 516-461 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NASSAUZN05 NY
2020-12-07 516-846 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NASSAUZN02 NY
2020-12-07 571-519 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 HERNDON VA
2020-12-07 571-532 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 MANASSAS VA
2020-12-07 608-860 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - WI 225C LA CROSSE WI
2020-12-07 669-306 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - CA 649C SNJS NORTH CA
2020-12-07 680-677 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC- NY 384C BALDWINSVL NY
2020-12-07 681-445 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - WV 449F PRKRSBGZN2 WV
2020-12-07 689-610 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - FL 937C ORLANDO FL
2020-12-07 747-476 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - CA 649C NO HOLLYWD CA
2020-12-07 838-877 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC- NY 384C HUDSON NY
2020-12-07 848-298 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 SPRINGLAKE NJ
2020-12-07 848-302 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PERTHAMBOY NJ
2020-12-07 904-902 0–9 XXXwhole prefix which blocks → ONVOY, LLC - FL 937C JACKSONVL FL
2020-12-07 908-476 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 BERNARDSVL NJ
2020-12-07 941-272 0–9 XXXwhole prefix which blocks → PAETEC ITEL, LLC 829J SARASOTA FL
2020-12-07 949-994 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - CA 649C SADLBK VLY CA
2020-12-07 959-217 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - CT 6624 DEEP RIVER CT
2020-12-07 985-338 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 COVINGTON LA
2020-12-04 207-880 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 PORTLAND ME
2020-12-04 207-910 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - ME 454F PORTLAND ME
2020-12-04 240-746 0–9 XXXall 10 · 6 holders which blocks → AT&T - LOCAL 7421 BRANDYWINE MD
2020-12-04 279-799 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H WALNUT GRV CA
2020-12-04 432-500 0XXX1XXX5XXX8XXX · 3 holders which blocks → FRACTEL, LLC 965H PYOTE TX
2020-12-04 562-523 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 ALAMITOS CA
2020-12-04 603-602 0–9 XXXall 10 · 2 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 ROCHESTER NH
2020-12-04 609-205 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 BARNEGAT NJ
2020-12-04 669-399 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H SAN MARTIN CA
2020-12-04 669-588 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H SNJS WEST CA
2020-12-04 747-388 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H CANOGAPARK CA
2020-12-04 831-253 0–9 XXXall 10 · 3 holders which blocks → U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SALINAS CA
2020-12-04 856-490 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 SWEDESBORO NJ
2020-12-04 971-387 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → T-MOBILE USA, INC. 6529 MCMINNVL OR

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.