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
2012-11-21 512-998 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 AUSTIN TX
2012-11-21 561-406 0–9 XXXall 10 · 6 holders which blocks → ITS FIBER, LLC 572G JUPITER FL
2012-11-21 618-601 0–9 XXXall 10 · 3 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K DUPO IL
2012-11-21 714-215 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2012-11-21 832-774 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2012-11-21 916-389 0–9 XXXall 10 · 7 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J SCRM MAIN CA
2012-11-21 954-470 0–9 XXXwhole prefix which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 FTLAUDERDL FL
2012-11-20 239-219 0–9 XXXall 10 · 4 holders which blocks → ORLANDO TELEPHONE COMPANY DBA SUMMIT BROADBAND 7857 FORT MYERS FL
2012-11-20 252-739 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J HENDERSON NC
2012-11-20 312-800 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E CHICGOZN01 IL
2012-11-20 385-222 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - UT 871E SALT LAKE UT
2012-11-20 385-333 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - UT 871E OGDEN UT
2012-11-20 385-777 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - UT 871E BOUNTIFUL UT
2012-11-20 385-800 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - UT 871E MURRAY UT
2012-11-20 385-888 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - UT 871E KAYSVILLE UT
2012-11-20 402-999 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - NE 549E OMAHA NE
2012-11-20 469-412 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - TX 903C FORNEY TX
2012-11-20 469-414 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - TX 903C COMBINE TX
2012-11-20 469-415 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - TX 903C MAYPEARL TX
2012-11-20 469-423 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - TX 903C BLUE RIDGE TX
2012-11-20 475-222 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F WATERBURY CT
2012-11-20 520-433 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 TUCSON AZ
2012-11-20 571-386 0–9 XXXall 10 · 7 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WSNGTNZN19 VA
2012-11-20 571-458 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSNGTNZN08 VA
2012-11-20 667-308 0–9 XXXall 10 · 8 holders which blocks → PEERLESS NETWORK OF MARYLAND, LLC 568G TOWSON MD
2012-11-20 667-401 0–9 XXXall 10 · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MD 6119 BALTIMORE MD
2012-11-20 682-215 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GLENDALE TX
2012-11-20 702-901 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - NV 029F LAS VEGAS NV
2012-11-20 765-999 0–9 XXXall 10 · 7 holders which blocks → PEERLESS NETWORK OF INDIANA, LLC - IN 279F CHESTERFLD IN
2012-11-20 808-462 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 TELECOM OF HAWAII, LP - HI 8297 HONOLULU HI
2012-11-20 848-300 0–9 XXXall 10 · 7 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - NJ 7142 ATLATCHLDS NJ
2012-11-20 860-800 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F NORWICH CT
2012-11-20 860-999 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F HARTFORD CT
2012-11-20 872-253 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC 224C CHICGOZN08 IL
2012-11-20 970-644 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF COLORADO, LLC - CO 278F GRAND JCT CO
2012-11-20 971-444 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - OR 750E WOODBURN OR
2012-11-20 971-777 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OR 750E BEAVERTON OR
2012-11-20 971-888 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - OR 750E PORTLAND OR
2012-11-20 971-999 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - OR 750E YAMHILL OR
2012-11-19 226-766 not yet reported which blocks → Fibernetics Corporation 464D Stratford —
2012-11-19 226-767 not yet reported which blocks → Fibernetics Corporation 464D Listowel —
2012-11-19 307-800 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - WY 450F KEMMERER WY
2012-11-19 343-885 not yet reported which blocks → Fibernetics Corporation 464D Cornwall —
2012-11-19 343-886 not yet reported which blocks → Fibernetics Corporation 464D Vankleek Hill —
2012-11-19 404-334 0–9 XXXall 10 · 5 holders which blocks → NUSO, LLC 551G ATLANTA GA
2012-11-19 407-530 0–9 XXXall 10 · 6 holders which blocks → CENTURYLINK OF FLORIDA, INC. (UNITED) 0341 KISSIMMEE FL
2012-11-19 480-666 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - AZ 630E PHOENIX AZ
2012-11-19 551-888 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF NEW JERSEY, LLC - NJ 264F UNION CITY NJ
2012-11-19 571-395 0–9 XXXall 10 · 3 holders which blocks → COMCAST IP PHONE, LLC 318J WSNGTNZN17 VA
2012-11-19 605-888 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - SD 162G CHAMBERLAN SD

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.