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
2018-11-01 681-250 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 5 holders which blocks → T-MOBILE USA, INC. 6529 PINEVILLE WV
2018-11-01 785-616 5XXX which blocks → IDEATEK TELCOM, LLC - KS 014E MILFORD KS
2018-11-01 825-990 not yet reported which blocks → TELUS Mobility 8301 Calgary —
2018-11-01 825-991 not yet reported which blocks → TELUS Mobility 8301 Calgary —
2018-11-01 843-969 0XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PEERLESS NETWORK OF SOUTH CAROLINA, LLC - SC 098H SULLIVNSIS SC
2018-11-01 930-209 0–9 XXXall 10 · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K SELLERSBG IN
2018-11-01 947-214 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G WALLEDLAKE MI
2018-10-31 207-516 0XXX1XXX2XXX3XXX5XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - ME 382D WILTON ME
2018-10-31 234-259 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 TWINSBURG OH
2018-10-31 336-947 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 HIGH POINT NC
2018-10-31 405-851 1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 4 holders which blocks → T-MOBILE USA, INC. 6529 SEMINOLE OK
2018-10-31 573-507 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 COLUMBIA MO
2018-10-31 580-344 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 ADA OK
2018-10-31 608-901 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 JANESVILLE WI
2018-10-31 806-999 0–9 XXXall 10 · 3 holders which blocks → USFON, INC. - TX 473F LUBBOCK TX
2018-10-31 815-620 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E MINOOKA IL
2018-10-31 989-931 0XXX2XXX3XXX4XXX · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7279 FARWELL MI
2018-10-30 424-426 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 HAWTHORNE CA
2018-10-30 430-265 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - TX 903C AVINGER TX
2018-10-30 430-543 0XXX1XXX3XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - TX 903C SIMMS TX
2018-10-30 430-697 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - TX 903C ANNONA TX
2018-10-30 432-526 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → ONVOY, LLC - TX 903C EUNICE WST TX
2018-10-30 470-420 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ATLANTA SO GA
2018-10-30 470-822 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - GA 6116 BUFORD GA
2018-10-30 585-501 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E HONEOYEFLS NY
2018-10-30 585-552 0–9 XXXall 10 · 7 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E COHOCTON NY
2018-10-30 631-818 0–9 XXXall 10 · 4 holders which blocks → CABLEVISION LIGHTPATH, INC. - NY 7126 BABYLON NY
2018-10-30 680-203 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E MORRISVL NY
2018-10-30 701-450 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - ND 452F BISMARCK ND
2018-10-30 701-951 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - ND 452F FARGO ND
2018-10-30 772-900 0–9 XXXall 10 · 5 holders which blocks → INVOXIO INCORPORATED 158H SEBASTIAN FL
2018-10-30 786-643 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MIAMI FL
2018-10-30 813-566 0–9 XXXall 10 · 5 holders which blocks → INVOXIO INCORPORATED 158H TAMPASTH FL
2018-10-30 850-738 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - FL 937C CHERRYLAKE FL
2018-10-30 914-350 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E CHAPPAQUA NY
2018-10-30 920-502 0–9 XXXall 10 · 6 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K NEENAH WI
2018-10-30 978-736 0–9 XXXall 10 · 6 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 LAWRENCE MA
2018-10-29 223-213 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA 967E DILLSBURG PA
2018-10-29 223-214 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA 967E FRYSTOWN PA
2018-10-29 240-680 0–9 XXXall 10 · 2 holders which blocks → PEERLESS NETWORK OF MARYLAND, LLC 568G FREDERICK MD
2018-10-29 325-252 0–9 XXXwhole prefix which blocks → ONVOY, LLC - TX 903C PUTNAM TX
2018-10-29 346-373 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF TEXAS, LLC - TX 177F CHANNELVW TX
2018-10-29 412-775 0–9 XXXall 10 · 5 holders which blocks → FULL SERVICE NETWORK LP 7820 PTTSBGZON3 PA
2018-10-29 434-204 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - VA 138E BROOKNEAL VA
2018-10-29 434-216 0–9 XXXwhole prefix which blocks → ONVOY, LLC - VA 138E VIRGILINA VA
2018-10-29 434-280 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - VA 138E BUCKINGHAM VA
2018-10-29 438-408 not yet reported which blocks → Videotron Ltd. 328F Montreal —
2018-10-29 469-560 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PLANO TX
2018-10-29 469-564 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → PEERLESS NETWORK OF TEXAS, LLC - TX 177F VENUS TX
2018-10-29 470-651 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ATLANTA SO GA

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.