NumberResearch Membership · Data 09/26/2026

Recent prefix assignments

360 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 28
ONVOY, LLC - CA 26
NEW CINGULAR WIRELESS PCS, LLC - IL 26
Rogers Communications Canada Inc. (Wireless) 23
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
2021-07-07 213-562 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 LSAN DA 04 CA
2021-07-07 219-294 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - IN 097D ST JOHN IN
2021-07-07 224-390 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 ROUND LAKE IL
2021-07-07 234-297 0XXX1XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → T-MOBILE USA, INC. 6529 NORTH LIMA OH
2021-07-07 279-322 1XXX2XXX3XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H WALNUT GRV CA
2021-07-07 279-499 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H SCRM NORTH CA
2021-07-07 279-599 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H SCRM MAIN CA
2021-07-07 279-899 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H COURTLAND CA
2021-07-07 313-572 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLCV - MI 543C DETROITZN1 MI
2021-07-07 326-202 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DAYTON OH
2021-07-07 341-202 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 OKLD MN-PD CA
2021-07-07 341-667 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H OKLD FRTVL CA
2021-07-07 341-732 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H ELSBR-PINL CA
2021-07-07 405-994 0XXX4XXX · 2 holders which blocks → ONVOY, LLC - OK 409F BYARS OK
2021-07-07 424-466 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H BEVERLYHLS CA
2021-07-07 442-359 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 OCSD CRLS CA
2021-07-07 448-200 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - FL 937C TALLAHASSE FL
2021-07-07 480-992 0–9 XXXwhole prefix which blocks → ONVOY, LLC - AZ 630E PHOENIX AZ
2021-07-07 520-541 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 WILLCOX AZ
2021-07-07 559-220 0–9 XXXall 10 · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LEMOORE CA
2021-07-07 585-556 0XXX2XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → ONVOY, LLC- NY 384C DARIEN NY
2021-07-07 602-844 0–9 XXXwhole prefix which blocks → ONVOY, LLC - AZ 630E PHOENIX AZ
2021-07-07 626-767 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H PSDN PSDN CA
2021-07-07 626-770 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H ALHAMBRA CA
2021-07-07 657-510 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2021-07-07 657-512 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HUNTITNBCH CA
2021-07-07 657-533 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H ANAHEIM CA
2021-07-07 657-544 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H SILVERADO CA
2021-07-07 657-633 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H HUNTITNBCH CA
2021-07-07 657-744 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H SANTA ANA CA
2021-07-07 669-799 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H SNJS SOUTH CA
2021-07-07 669-877 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H CAMPBELL CA
2021-07-07 669-899 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H LOS GATOS CA
2021-07-07 669-977 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H SNJS WEST CA
2021-07-07 680-226 0XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → ONVOY, LLC- NY 384C NORTH ROSE NY
2021-07-07 689-238 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 KISSIMMEE FL
2021-07-07 689-239 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WINTERPARK FL
2021-07-07 708-353 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LA GRANGE IL
2021-07-07 719-831 0–9 XXXall 10 · 5 holders which blocks → N.E. COLORADO CELLULAR, INC. 6874 LAMAR CO
2021-07-07 725-249 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NV 6458 LAS VEGAS NV
2021-07-07 725-250 0–9 XXXall 10 · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NV 4805 LAS VEGAS NV
2021-07-07 747-677 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H BRBN BRBN CA
2021-07-07 747-699 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → FRACTEL, LLC 965H SUNLD TJNG CA
2021-07-07 747-799 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H NORTHRIDGE CA
2021-07-07 747-899 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H SNFN PACM CA
2021-07-07 816-397 0XXX3XXX7XXX · 2 holders which blocks → ONVOY, LLC - MO 093F TURNEY MO
2021-07-07 840-345 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H POMONA CA
2021-07-07 840-465 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H CHINO CA
2021-07-07 925-722 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H WALNUT CRK CA
2021-07-07 929-622 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H NWYRCYZN08 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.