NumberResearch Membership · Data 09/26/2026

Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026

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
2021-06-09 564-212 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 ABERDEEN WA
2021-06-09 567-499 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H ELIDA OH
2021-06-09 620-503 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → ONVOY, LLC - KS 205F MCPHERSON KS
2021-06-09 647-369 not yet reported which blocks → IXICA Communications Inc. 812H Toronto —
2021-06-09 657-502 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 HUNTITNBCH CA
2021-06-09 660-276 0XXX1XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 MOBERLY MO
2021-06-09 680-388 3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H THERESA NY
2021-06-09 680-399 0XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H RED CREEK NY
2021-06-09 680-488 0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H SKANEATLES NY
2021-06-09 680-899 0XXX1XXX2XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H ONTARIO NY
2021-06-09 689-488 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - FL 937C SANFORD FL
2021-06-09 715-990 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → T-MOBILE USA, INC. 6529 SHAWANO WI
2021-06-09 878-322 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J DONORA PA
2021-06-09 908-395 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 BERNARDSVL NJ
2021-06-09 913-404 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - KS 205F PAOLA KS
2021-06-09 929-583 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN04 NY
2021-06-09 929-584 0–9 XXXwhole prefix which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN07 NY
2021-06-09 934-210 0–9 XXXwhole prefix which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 AMITYVILLE NY
2021-06-08 234-388 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H MANCHESTR OH
2021-06-08 365-748 not yet reported which blocks → TELUS Integrated Communications 2782 Cooksville —
2021-06-08 782-522 not yet reported which blocks → Fibernetics Corporation 464D Stewiacke —
2021-06-08 782-523 not yet reported which blocks → Fibernetics Corporation 464D Tangier —
2021-06-08 782-524 not yet reported which blocks → Fibernetics Corporation 464D Upper Musquodoboit —
2021-06-08 782-525 not yet reported which blocks → Fibernetics Corporation 464D Upper Stewiacke —
2021-06-08 782-526 not yet reported which blocks → Fibernetics Corporation 464D Wallace —
2021-06-08 782-527 not yet reported which blocks → Fibernetics Corporation 464D Walton —
2021-06-08 782-528 not yet reported which blocks → Fibernetics Corporation 464D Waverley —
2021-06-08 782-529 not yet reported which blocks → Fibernetics Corporation 464D Wentworth —
2021-06-08 862-837 0–9 XXXall 10 · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J ORANGE NJ
2021-06-07 224-389 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ALGONQUIN IL
2021-06-07 234-399 0XXX1XXX2XXX3XXX4XXX5XXX7XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H FREDECKSBG OH
2021-06-07 234-477 0XXX1XXX2XXX4XXX7XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H SMITHVILLE OH
2021-06-07 234-677 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H BRUNSWICK OH
2021-06-07 253-357 0–9 XXXall 10 · 4 holders which blocks → TELNYX LLC 073H TACOMA WA
2021-06-07 315-980 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 SYLVAN BCH NY
2021-06-07 442-455 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - CA 649C BARSTOW CA
2021-06-07 484-957 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 ALLENTOWN PA
2021-06-07 501-461 0–9 XXXall 10 · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H BAUXITE AR
2021-06-07 501-488 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H BRADFORD AR
2021-06-07 501-512 0–9 XXXall 10 · 6 holders which blocks → ONVOY SPECTRUM, LLC 624H BRYANTCGVL AR
2021-06-07 539-266 0XXX1XXX2XXX5XXX7XXX8XXX9XXX · 7 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 SALLISAW OK
2021-06-07 580-404 0XXX1XXX2XXX3XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - OK 119F ROFF OK
2021-06-07 607-617 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → ONVOY SPECTRUM, LLC 624H NICHOLS NY
2021-06-07 607-620 0XXX2XXX3XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H OTEGO NY
2021-06-07 616-343 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 GREENVILLE MI
2021-06-07 661-887 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - CA 649C PLDL PLDL CA
2021-06-07 680-240 0XXX1XXX2XXX4XXX5XXX6XXX9XXX · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H SEMPRONIUS NY
2021-06-07 680-255 0XXX2XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H WADDINGTON NY
2021-06-07 680-270 2XXX3XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H WEEDSPORT NY
2021-06-07 716-414 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H STEAMBURG NY

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.