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
2013-01-10 813-702 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 ZEPHYRHILS FL
2013-01-10 936-213 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F WALLER TX
2013-01-09 217-441 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC 224C SPRINGFLD IL
2013-01-09 217-600 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC 224C CHAMPAURBN IL
2013-01-09 336-814 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - NC 638E GREENSBORO NC
2013-01-09 408-709 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNJS WEST CA
2013-01-09 437-888 not yet reported which blocks → Fibernetics Corporation 464D Toronto —
2013-01-09 478-292 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - GA 067D MACON GA
2013-01-09 541-630 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 CENTRAL PT OR
2013-01-09 581-648 not yet reported which blocks → Videotron Ltd. 8306 L'Ile-Verte —
2013-01-09 717-963 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - PA 547E HARISBGZN1 PA
2013-01-09 762-585 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - GA 067D AUGUSTA GA
2013-01-09 778-445 not yet reported which blocks → Shaw Telecom Inc. 497E Victoria —
2013-01-09 803-801 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 WINNSBORO SC
2013-01-09 843-802 0–9 XXXall 10 · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K HILTONHEAD SC
2013-01-09 901-228 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 MEMPHIS TN
2013-01-09 912-421 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - GA 067D SAVANNAH GA
2013-01-08 305-602 0–9 XXXwhole prefix which blocks → PEERLESS NETWORK OF FLORIDA, LLC - FL 902E KEYS FL
2013-01-08 351-206 0XXX1XXX2XXX4XXX5XXX9XXX · 2 holders which blocks → PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 268F ROCKPORT MA
2013-01-08 614-912 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 GROVEPORT OH
2013-01-08 614-941 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 GROVEPORT OH
2013-01-08 774-336 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 268F BREWSTER MA
2013-01-08 908-308 0–9 XXXall 10 · 6 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J BELLE MEAD NJ
2013-01-07 226-667 not yet reported which blocks → Fibernetics Corporation 464D London —
2013-01-07 289-408 not yet reported which blocks → Fibernetics Corporation 464D Hamilton —
2013-01-07 289-859 not yet reported which blocks → Fibernetics Corporation 464D Markham —
2013-01-07 343-887 not yet reported which blocks → Fibernetics Corporation 464D Ottawa-Hull —
2013-01-07 581-781 not yet reported which blocks → Fibernetics Corporation 464D Quebec —
2013-01-07 587-882 not yet reported which blocks → Fibernetics Corporation 464D Edmonton —
2013-01-07 712-739 0XXX1XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DOON IA
2013-01-07 774-334 0–9 XXXall 10 · 7 holders which blocks → PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 268F SOUTHBDG MA
2013-01-07 778-804 not yet reported which blocks → Fibernetics Corporation 464D Richmond —
2013-01-07 786-605 0–9 XXXwhole prefix which blocks → PEERLESS NETWORK OF FLORIDA, LLC - FL 902E MIAMI FL
2013-01-07 808-260 0–9 XXXall 10 · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K HONOLULU HI
2013-01-07 843-779 0–9 XXXall 10 · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K CHARLESTON SC
2013-01-07 843-799 0–9 XXXall 10 · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K FLORENCE SC
2013-01-07 843-945 0–9 XXXall 10 · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K MYRTLE BCH SC
2013-01-07 980-458 0–9 XXXall 10 · 6 holders which blocks → PAETEC ITEL, LLC 829J CLEVELAND NC
2013-01-04 424-290 0–9 XXXall 10 · 9 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E EL SEGUNDO CA
2013-01-04 510-210 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E RICHMOND CA
2013-01-04 603-260 0–9 XXXall 10 · 3 holders which blocks → COMCAST IP PHONE, LLC 318J DERRY NH
2013-01-04 720-370 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - CO 078F DENVER CO
2013-01-04 760-675 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 EL CENTRO CA
2013-01-04 910-361 0–9 XXXall 10 · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K LAURINBURG NC
2013-01-03 210-714 0–9 XXXall 10 · 2 holders which blocks → PEERLESS NETWORK OF TEXAS, LLC - TX 177F SANANTONIO TX
2013-01-03 224-318 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J ARLIGTNHTS IL
2013-01-03 606-380 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K HILLSBORO KY
2013-01-03 606-709 0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K SHARPSBURG KY
2013-01-03 786-502 0–9 XXXall 10 · 4 holders which blocks → COMCAST IP PHONE, LLC 318J MIAMI FL
2013-01-03 786-540 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E NORTH DADE FL

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.