NumberResearch Membership · Data 09/29/2026

Recent prefix assignments

347 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/29/2026

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
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 23
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
2020-07-27 743-600 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H HIGH POINT NC
2020-07-27 762-253 0–9 XXXall 10 · 6 holders which blocks → HD CARRIER LLC 321J AUGUSTA GA
2020-07-27 779-345 0XXX1XXX2XXX3XXX5XXX6XXX · 5 holders which blocks → FRACTEL, LLC 965H BYRON IL
2020-07-27 779-677 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H FREEPORT IL
2020-07-27 779-799 0XXX1XXX2XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H COLETA IL
2020-07-27 779-922 0XXX1XXX2XXX4XXX5XXX · 5 holders which blocks → FRACTEL, LLC 965H HOOPPOLE IL
2020-07-27 779-933 0XXX1XXX2XXX3XXX7XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H HINCKLEY IL
2020-07-27 878-251 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - PA 547E BLACK LICK PA
2020-07-27 912-461 0–9 XXXall 10 · 3 holders which blocks → HD CARRIER LLC 321J SAVANNAH GA
2020-07-27 947-225 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 HOLLY MI
2020-07-27 984-977 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H SANFORD NC
2020-07-24 225-563 2XXX3XXX6XXX7XXX8XXX9XXX which blocks → TON80 COMMUNICATIONS, LLC 516J INNIS LA
2020-07-24 239-328 0–9 XXXall 10 · 3 holders which blocks → HD CARRIER LLC 321J FORT MYERS FL
2020-07-24 249-863 not yet reported which blocks → TELUS Mobility 8303 New Liskeard —
2020-07-24 249-864 not yet reported which blocks → TELUS Mobility 8303 Sudbury —
2020-07-24 316-368 0–9 XXXall 10 · 5 holders which blocks → HD CARRIER LLC 321J WICHITA KS
2020-07-24 401-355 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H CENTREDALE RI
2020-07-24 401-955 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H PAWTUCKET RI
2020-07-24 463-236 0–9 XXXall 10 · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - IN 7314 PLAINFIELD IN
2020-07-24 559-599 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H CLOVIS CA
2020-07-24 585-540 0–9 XXXall 10 · 3 holders which blocks → HD CARRIER LLC 321J ROCHESTER NY
2020-07-24 659-203 0–9 XXXwhole prefix which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - AL 8271 BIRMINGHAM AL
2020-07-24 689-221 0–9 XXXall 10 · 2 holders which blocks → HD CARRIER LLC 321J ORLANDO FL
2020-07-24 774-395 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 ROCHESTER MA
2020-07-24 831-830 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - CA 649C KING CITY CA
2020-07-24 862-477 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H SUCCASUNNA NJ
2020-07-24 862-529 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H CALDWELL NJ
2020-07-24 862-688 0XXX1XXX6XXX8XXX · 4 holders which blocks → FRACTEL, LLC 965H VERNON NJ
2020-07-24 862-946 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H LITTLE FLS NJ
2020-07-24 862-977 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H NEWFOUNDLD NJ
2020-07-24 863-252 0–9 XXXall 10 · 4 holders which blocks → HD CARRIER LLC 321J AVON PARK FL
2020-07-24 865-370 0–9 XXXall 10 · 4 holders which blocks → HD CARRIER LLC 321J KNOXVILLE TN
2020-07-24 867-687 not yet reported which blocks → TELUS Mobility 8303 Whitehorse —
2020-07-24 904-643 0–9 XXXall 10 · 3 holders which blocks → HD CARRIER LLC 321J JACKSONVL FL
2020-07-23 207-306 0–9 XXXall 10 · 6 holders which blocks → BELL ATLANTIC MOBILE, INC 6386 BELFAST ME
2020-07-23 207-830 0–9 XXXall 10 · 6 holders which blocks → BELL ATLANTIC MOBILE, INC 6386 WATERVILLE ME
2020-07-23 249-394 not yet reported which blocks → Fibernetics Corporation 464D Pointe Au Baril —
2020-07-23 249-395 not yet reported which blocks → Fibernetics Corporation 464D Port Carling —
2020-07-23 249-396 not yet reported which blocks → Fibernetics Corporation 464D Rosseau —
2020-07-23 249-397 not yet reported which blocks → Fibernetics Corporation 464D Sundridge —
2020-07-23 249-398 not yet reported which blocks → Fibernetics Corporation 464D Windermere —
2020-07-23 249-865 not yet reported which blocks → TELUS Mobility 8303 Sault Ste. Marie —
2020-07-23 319-304 0–9 XXXall 10 · 5 holders which blocks → CSC WIRELESS, LLC 425J CEDAR RPDS IA
2020-07-23 343-515 not yet reported which blocks → ISP Telecom Inc. 4727 Arnprior —
2020-07-23 343-516 not yet reported which blocks → ISP Telecom Inc. 4727 Carp —
2020-07-23 343-517 not yet reported which blocks → ISP Telecom Inc. 4727 Constance Bay —
2020-07-23 343-519 not yet reported which blocks → ISP Telecom Inc. 4727 Kemptville —
2020-07-23 413-688 0XXX1XXX2XXX6XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H MONSON MA
2020-07-23 509-508 0–9 XXXall 10 · 5 holders which blocks → CSC WIRELESS, LLC 425J SPOKANE WA
2020-07-23 534-200 0–9 XXXall 10 · 3 holders which blocks → CSC WIRELESS, LLC 425J EAU CLAIRE WI

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/29/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.