NumberResearch Membership · Data 09/25/2026

Recent prefix assignments

337 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/25/2026

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
ONVOY, LLC - CA 26
NEW CINGULAR WIRELESS PCS, LLC - IL 25
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 12
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
2021-10-07 667-354 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
2021-10-06 947-955 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 PONTIAC MI
2021-10-05 309-618 8XXX9XXX · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H GALVA IL
2021-10-05 309-904 4XXX which blocks → ONVOY, LLC 224C JOY IL
2021-10-05 309-905 5XXX which blocks → ONVOY, LLC 224C NEW BOSTON IL
2021-10-05 309-908 0XXX8XXX · 2 holders which blocks → ONVOY, LLC 224C WASHBURN IL
2021-10-05 309-915 0XXX5XXX6XXX · 2 holders which blocks → ONVOY, LLC 224C TREMONT IL
2021-10-05 321-371 0–9 XXXall 10 · 3 holders which blocks → METROPCS NETWORKS, LLC 899D TITUSVILLE FL
2021-10-05 321-374 0–9 XXXall 10 · 3 holders which blocks → METROPCS NETWORKS, LLC 899D MELBOURNE FL
2021-10-05 365-224 not yet reported which blocks → Beanfield Technologies Inc. 575G Woodbridge —
2021-10-05 365-534 not yet reported which blocks → Beanfield Technologies Inc. 575G Palgrave —
2021-10-05 365-752 not yet reported which blocks → Beanfield Technologies Inc. 575G Nobleton —
2021-10-05 365-753 not yet reported which blocks → Beanfield Technologies Inc. 575G Oak Ridges —
2021-10-05 365-920 not yet reported which blocks → Beanfield Technologies Inc. 575G Thornhill —
2021-10-05 448-600 0XXX2XXX6XXX7XXX9XXX · 2 holders which blocks → ONVOY, LLC - FL 937C JAY FL
2021-10-05 448-900 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - FL 937C PACE FL
2021-10-05 470-856 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ATLANTA SO GA
2021-10-05 470-897 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ATLANTA NE GA
2021-10-05 475-302 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - CT 639C BRIDGEPORT CT
2021-10-05 475-304 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - CT 639C HUNTINGTON CT
2021-10-05 475-308 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - CT 6624 NEW HAVEN CT
2021-10-05 559-716 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 MADERA CA
2021-10-05 680-232 0XXX2XXX3XXX4XXX9XXX · 4 holders which blocks → ONVOY, LLC- NY 384C BRANCHPORT NY
2021-10-05 680-233 0XXX1XXX2XXX3XXX9XXX · 4 holders which blocks → ONVOY, LLC- NY 384C NATURALBDG NY

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/25/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.