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
2013-10-03 906-546 0XXX which blocks → PENINSULA FIBER NETWORK, LLC - MI 116F SHINGLETON MI
2013-10-03 906-559 0XXX which blocks → PENINSULA FIBER NETWORK, LLC - MI 116F TROUTCREEK MI
2013-10-03 906-606 0XXX which blocks → PENINSULA FIBER NETWORK, LLC - MI 116F SCOTTPOINT MI
2013-10-03 906-623 0XXX2XXX3XXX6XXX · 3 holders which blocks → PENINSULA FIBER NETWORK, LLC - MI 116F SAND RIVER MI
2013-10-03 906-706 0XXX which blocks → PENINSULA FIBER NETWORK, LLC - MI 116F TAPIOLA MI
2013-10-03 906-738 0XXX1XXX2XXX · 3 holders which blocks → PENINSULA FIBER NETWORK, LLC - MI 116F WALLACE MI
2013-10-03 906-747 0XXX which blocks → PENINSULA FIBER NETWORK, LLC - MI 116F WATSON MI
2013-10-03 929-254 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E NWYRCYZN13 NY
2013-10-03 978-321 0–9 XXXall 10 · 7 holders which blocks → PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 268F WINCHENDON MA
2013-10-03 978-419 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 268F TYNGSBORO MA
2013-10-03 978-708 0–9 XXXall 10 · 8 holders which blocks → PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 268F GROTON MA
2013-10-02 819-836 not yet reported which blocks → Telephone Drummond Inc 8257 St-Cyrille —
2013-10-02 906-216 0XXX which blocks → PENINSULA FIBER NETWORK, LLC - MI 116F LK GOGEBIC MI
2013-10-02 906-220 0XXX1XXX · 2 holders which blocks → PENINSULA FIBER NETWORK, LLC - MI 116F NOLANDOLKS MI
2013-10-02 906-243 0XXX1XXX · 2 holders which blocks → PENINSULA FIBER NETWORK, LLC - MI 116F MASS MI
2013-10-02 906-247 0XXX which blocks → PENINSULA FIBER NETWORK, LLC - MI 116F REXTON MI
2013-10-02 906-349 0XXX1XXX2XXX3XXX4XXX7XXX · 5 holders which blocks → PENINSULA FIBER NETWORK, LLC - MI 116F PICKFORD MI
2013-10-02 906-383 0XXX which blocks → PENINSULA FIBER NETWORK, LLC - MI 116F FENCERIVER MI
2013-10-02 906-388 0XXX which blocks → PENINSULA FIBER NETWORK, LLC - MI 116F HULBERT MI
2013-10-02 906-403 0XXX which blocks → PENINSULA FIBER NETWORK, LLC - MI 116F PARADISE MI
2013-10-02 906-416 0XXX1XXX · 2 holders which blocks → PENINSULA FIBER NETWORK, LLC - MI 116F ROCKLAND MI
2013-10-02 906-532 0XXX which blocks → PENINSULA FIBER NETWORK, LLC - MI 116F GRANDMRAIS MI
2013-10-02 906-535 0XXX which blocks → PENINSULA FIBER NETWORK, LLC - MI 116F HIAWATHFOR MI
2013-10-02 906-628 0XXX2XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → PENINSULA FIBER NETWORK, LLC - MI 116F GARDEN MI
2013-10-02 906-675 0–9 XXXall 10 · 7 holders which blocks → PENINSULA FIBER NETWORK, LLC - MI 116F IRONWOOD MI
2013-10-02 906-783 0XXX which blocks → PENINSULA FIBER NETWORK, LLC - MI 116F SENEY MI
2013-10-02 906-978 0XXX2XXX3XXX6XXX7XXX8XXX · 4 holders which blocks → PENINSULA FIBER NETWORK, LLC - MI 116F GULLIVER MI
2013-10-01 415-660 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNFC CNTRL CA
2013-10-01 424-325 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F W ANGELES CA
2013-10-01 712-745 7XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - IA 9877 NO HOPKINS IA
2013-10-01 813-606 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPACEN FL
2013-10-01 813-812 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPASTH FL
2013-10-01 816-306 0–9 XXXall 10 · 6 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J MAYSVILLE MO
2013-10-01 906-207 0–9 XXXall 10 · 3 holders which blocks → PENINSULA FIBER NETWORK, LLC - MI 116F CEDARVILLE MI
2013-10-01 906-208 0–9 XXXall 10 · 3 holders which blocks → PENINSULA FIBER NETWORK, LLC - MI 116F AU TRAIN MI
2013-10-01 906-209 0XXX which blocks → PENINSULA FIBER NETWORK, LLC - MI 116F GOLDENLAKE MI
2013-10-01 906-219 0XXX which blocks → PENINSULA FIBER NETWORK, LLC - MI 116F FAITHORN MI
2013-10-01 906-230 0XXX which blocks → PENINSULA FIBER NETWORK, LLC - MI 116F DONKEN MI
2013-10-01 906-245 0XXX which blocks → PENINSULA FIBER NETWORK, LLC - MI 116F DEER PARK MI
2013-10-01 906-382 0XXX1XXX · 2 holders which blocks → PENINSULA FIBER NETWORK, LLC - MI 116F BRIMLEY MI
2013-10-01 906-436 0XXX which blocks → PENINSULA FIBER NETWORK, LLC - MI 116F ALSTON MI
2013-10-01 906-459 0XXX3XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → PENINSULA FIBER NETWORK, LLC - MI 116F DE TOUR MI
2013-10-01 906-522 0XXX1XXX · 2 holders which blocks → PENINSULA FIBER NETWORK, LLC - MI 116F EWEN MI
2013-10-01 906-619 0XXX which blocks → PENINSULA FIBER NETWORK, LLC - MI 116F ECKERMAN MI
2013-10-01 906-656 0XXX which blocks → PENINSULA FIBER NETWORK, LLC - MI 116F DRUMMONDIS MI
2013-10-01 906-668 0XXX which blocks → PENINSULA FIBER NETWORK, LLC - MI 116F FELCH MI
2013-09-30 205-810 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - AL 072F PINSON AL
2013-09-30 520-645 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 DOUGLAS AZ
2013-09-30 570-980 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 WILLIAMSPT PA
2013-09-30 609-305 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 WILDWOOD NJ

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.