NumberResearch Membership · Data 09/25/2026

Recent prefix assignments

358 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 31
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - IL 27
ONVOY, LLC - NJ 15
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
2012-10-25 778-314 not yet reported which blocks → Zayo Canada Inc. 8304 Abbotsford —
2012-10-25 804-624 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 RICHMOND VA
2012-10-25 978-641 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 HAVERHILL MA
2012-10-24 210-620 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SANANTONIO TX
2012-10-24 267-268 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHPHSBZN43 PA
2012-10-24 267-524 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHPHSBZN43 PA
2012-10-24 413-302 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 SPRINGFLD MA
2012-10-24 425-324 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 BELLEVUE WA
2012-10-24 484-735 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 ALLENTOWN PA
2012-10-24 579-227 not yet reported which blocks → TELUS Quebec 2243 Rigaud —
2012-10-24 579-228 not yet reported which blocks → TELUS Quebec 2243 Ste-Rosalie —
2012-10-24 587-292 not yet reported which blocks → TELUS 8084 Fort Mackay —
2012-10-24 587-747 not yet reported which blocks → Distributel 081E Calgary —
2012-10-24 702-747 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - NV 029F LAS VEGAS NV
2012-10-24 770-766 0–9 XXXall 10 · 2 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - GA 8392 LULA GA
2012-10-24 810-634 0–9 XXXall 10 · 7 holders which blocks → DAYSTARR LLC DBA DAYSTARR COMMUNICATIONS 993L NEWLOTHROP MI
2012-10-24 819-204 not yet reported which blocks → TELUS Quebec 2243 Notre-Dame-du-Bon-Conseil —
2012-10-23 202-817 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN1 DC
2012-10-23 210-612 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SANANTONIO TX
2012-10-23 267-683 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHLDLPHZN2 PA
2012-10-23 267-788 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHLDLPHZN2 PA
2012-10-23 469-406 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 MCKINNEY TX
2012-10-23 469-502 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GRANDPRARI TX
2012-10-23 541-600 0–9 XXXall 10 · 4 holders which blocks → NUSO, LLC 551G EUGENE OR
2012-10-23 681-358 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WV 6394 RIPLEY WV
2012-10-23 801-890 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - UT 3231 MIDVALE UT
2012-10-23 832-763 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2012-10-23 857-313 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2012-10-22 267-457 0–9 XXXall 10 · 5 holders which blocks → NUSO, LLC 551G PHLDLPHZN1 PA
2012-10-22 412-694 0–9 XXXall 10 · 5 holders which blocks → NUSO, LLC 551G PTTSBGZON1 PA
2012-10-22 512-937 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2012-10-22 520-484 0–9 XXXall 10 · 3 holders which blocks → NUSO, LLC 551G TUCSON AZ
2012-10-22 570-892 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 SCRANTON PA
2012-10-22 570-904 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 SCRANTON PA
2012-10-22 585-445 0–9 XXXall 10 · 6 holders which blocks → NUSO, LLC 551G ROCHESTER NY
2012-10-22 616-323 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLCV - MI 543C GRAND RPDS MI
2012-10-22 631-526 0–9 XXXall 10 · 8 holders which blocks → ONVOY, LLC- NY 384C BABYLON NY
2012-10-22 989-355 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLCV - MI 543C SAGINAW MI
2012-10-19 224-316 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 NORTHBROOK IL
2012-10-19 312-614 0–9 XXXall 10 · 5 holders which blocks → ILLINOIS BELL TEL CO 9329 CHICGOZN01 IL
2012-10-19 313-603 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 DETROITZN3 MI
2012-10-19 336-893 0–9 XXXall 10 · 4 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 WINSTN SAL NC
2012-10-19 414-600 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - WI 225C MILWAUKZN4 WI
2012-10-19 424-284 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - CA 649C BEVERLYHLS CA
2012-10-19 579-279 not yet reported which blocks → Fibernetics Corporation 464D Ste-Rose —
2012-10-19 579-379 not yet reported which blocks → Fibernetics Corporation 464D Laval-Ouest —
2012-10-19 579-578 not yet reported which blocks → Fibernetics Corporation 464D St-Vincent-de-Paul —
2012-10-19 579-679 not yet reported which blocks → Fibernetics Corporation 464D Chomedey —
2012-10-19 579-779 not yet reported which blocks → Fibernetics Corporation 464D Pont-Viau —
2012-10-19 579-979 not yet reported which blocks → Fibernetics Corporation 464D Laval-Est —

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.