NumberResearch Membership · Data 09/27/2026

Recent prefix assignments

334 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 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
2021-10-08 929-997 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 NWYRCYZN09 NY
2021-10-08 986-210 0–9 XXXall 10 · 3 holders which blocks → TELNYX LLC 073H BOISE ID
2021-10-07 224-447 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 WAUKEGAN IL
2021-10-07 224-809 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 DESPLAINES IL
2021-10-07 239-375 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 NAPLES FL
2021-10-07 239-376 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 IMMOKALEE FL
2021-10-07 239-378 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 NAPLES FL
2021-10-07 239-379 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 FORT MYERS FL
2021-10-07 240-861 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 ASHTON236 MD
2021-10-07 240-869 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN10 MD
2021-10-07 240-871 0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 4 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 LXTNPKGRML MD
2021-10-07 240-872 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN6 MD
2021-10-07 240-879 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN4 MD
2021-10-07 332-254 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN01 NY
2021-10-07 413-435 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 CHICOPEE MA
2021-10-07 434-789 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 EMPORIA VA
2021-10-07 445-221 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 PHLDLPHZN1 PA
2021-10-07 582-710 0XXX1XXX2XXX3XXX4XXX9XXX · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H OIL CITY PA
2021-10-07 602-838 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2021-10-07 605-502 0XXX1XXX2XXX3XXX · 3 holders which blocks → TELNYX LLC 073H PIERRE SD
2021-10-07 623-274 0–9 XXXall 10 · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2021-10-07 629-261 0–9 XXXall 10 · 2 holders which blocks → HD CARRIER LLC 321J MURFREESBO TN
2021-10-07 629-263 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 SPRINGFLD TN
2021-10-07 667-354 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 BALTIMORE MD
2021-10-07 667-355 0–9 XXXwhole prefix which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 ABERDEEN MD
2021-10-07 680-887 0XXX1XXX2XXX6XXX8XXX9XXX · 4 holders which blocks → METROPCS, INC. 5562 MADISON NY
2021-10-07 845-873 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NEW PALTZ NY
2021-10-07 845-968 6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC- NY 384C MILTON NY
2021-10-07 857-390 0–9 XXXwhole prefix which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 BROOKLINE MA
2021-10-07 865-420 0–9 XXXall 10 · 4 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K MASCOT TN
2021-10-07 873-466 not yet reported which blocks → Videotron Ltd. 8306 Tingwick —
2021-10-07 934-220 0–9 XXXall 10 · 6 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 CENTRAISLP NY
2021-10-07 947-944 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 FARMINGTON MI
2021-10-06 202-209 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN1 DC
2021-10-06 231-387 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PETOSKEY MI
2021-10-06 269-710 0XXX1XXX2XXX7XXX9XXX · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H HAMILTON MI
2021-10-06 272-634 0–9 XXXall 10 · 5 holders which blocks → CORE COMMUNICATIONS, INC. - PA 3806 BERWICK PA
2021-10-06 316-403 0XXX2XXX3XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - KS 205F MOUNT HOPE KS
2021-10-06 437-420 not yet reported which blocks → Bell Mobility 6574 Toronto —
2021-10-06 437-421 not yet reported which blocks → Bell Mobility 6574 Toronto —
2021-10-06 551-330 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 CLIFFSIDE NJ
2021-10-06 551-331 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 UNION CITY NJ
2021-10-06 573-790 0XXX1XXX2XXX8XXX9XXX · 4 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K CLARKSVL MO
2021-10-06 607-410 0XXX2XXX4XXX5XXX9XXX · 4 holders which blocks → ONVOY, LLC- NY 384C ALMOND NY
2021-10-06 657-526 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 ANAHEIM CA
2021-10-06 716-502 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC- NY 384C CLARENCCTR NY
2021-10-06 785-618 8XXX which blocks → ONVOY, LLC - KS 205F SOWILSONVL KS
2021-10-06 838-263 0XXX1XXX2XXX3XXX4XXX5XXX6XXX · 5 holders which blocks → ONVOY, LLC- NY 384C VALLEY FLS NY
2021-10-06 838-264 4XXX7XXX9XXX · 3 holders which blocks → ONVOY, LLC- NY 384C WINDHAM NY
2021-10-06 856-328 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 MOORESTOWN NJ

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.