NumberResearch Membership · Data 09/30/2026

Recent prefix assignments

375 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/30/2026

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
Rogers Communications Canada Inc. (Wireless) 46
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 28
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
2019-05-29 406-401 0–9 XXXall 10 · 3 holders which blocks → CSC WIRELESS, LLC 425J GREATFALLS MT
2019-05-29 406-409 0–9 XXXall 10 · 4 holders which blocks → CSC WIRELESS, LLC 425J BILLINGS MT
2019-05-29 438-357 not yet reported which blocks → Bell Mobility 6574 Montreal —
2019-05-29 470-571 0–9 XXXall 10 · 4 holders which blocks → CSC WIRELESS, LLC 425J ATLANTA GA
2019-05-29 605-403 0–9 XXXall 10 · 4 holders which blocks → CSC WIRELESS, LLC 425J SIOUX FLS SD
2019-05-29 647-615 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-05-29 689-205 0–9 XXXall 10 · 5 holders which blocks → CSC WIRELESS, LLC 425J ORLANDO FL
2019-05-29 701-957 0XXX2XXX9XXX · 3 holders which blocks → CSC WIRELESS, LLC 425J BISMARCK ND
2019-05-29 712-524 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - IA 221F COUNCILBLF IA
2019-05-29 785-940 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 5 holders which blocks → CSC WIRELESS, LLC 425J TOPEKA KS
2019-05-29 786-697 0–9 XXXall 10 · 3 holders which blocks → CSC WIRELESS, LLC 425J MIAMI FL
2019-05-29 825-501 not yet reported which blocks → Iristel Inc. 154E Bonnyville —
2019-05-29 907-318 0–9 XXXall 10 · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AK 9413 ANCHORAGE AK
2019-05-28 209-540 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 SNRA MAIN CA
2019-05-28 240-689 0–9 XXXall 10 · 6 holders which blocks → CSC WIRELESS, LLC 425J WSNG236Z15 MD
2019-05-28 249-488 not yet reported which blocks → Iristel Inc. 154E Bobcaygeon —
2019-05-28 301-709 0–9 XXXall 10 · 3 holders which blocks → CSC WIRELESS, LLC 425J CUMBERLAND MD
2019-05-28 312-668 0–9 XXXall 10 · 6 holders which blocks → CSC WIRELESS, LLC 425J CHICGOZN01 IL
2019-05-28 339-338 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 LYNN MA
2019-05-28 424-435 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 TORRANCE CA
2019-05-28 502-705 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LOUISVILLE KY
2019-05-28 505-458 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - NM 206F GALLUP NM
2019-05-28 510-807 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 HAYWARD CA
2019-05-28 639-801 not yet reported which blocks → Iristel Inc. 154E Biggar —
2019-05-28 657-384 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 WESTMINSTR CA
2019-05-28 669-291 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 LOS GATOS CA
2019-05-28 707-713 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ARCATA CA
2019-05-28 814-559 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F CURWENSVL PA
2019-05-28 830-396 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 KENEDY TX
2019-05-28 838-219 0XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 KINDERHOOK NY
2019-05-28 845-719 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 KERHONKSON NY
2019-05-28 928-352 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - AZ 630E KINGMAN AZ
2019-05-27 438-250 not yet reported which blocks → Bell Mobility 6574 Montreal —
2019-05-27 438-252 not yet reported which blocks → Bell Mobility 6574 Montreal —
2019-05-27 647-440 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-05-27 782-237 not yet reported which blocks → TELUS Integrated Communications 2782 Waverley —
2019-05-27 782-238 not yet reported which blocks → TELUS Integrated Communications 2782 Halifax —
2019-05-24 651-467 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - MN 184D LINDSTROM MN
2019-05-24 689-800 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF FLORIDA, LLC - FL 902E ORLANDO FL
2019-05-24 732-724 0–9 XXXall 10 · 4 holders which blocks → CORETEL NEW JERSEY, INC. - NJ 482F SOUTHRIVER NJ
2019-05-24 782-239 not yet reported which blocks → TELUS Integrated Communications 2782 St. Margarets —
2019-05-24 782-240 not yet reported which blocks → TELUS Integrated Communications 2782 Sackville —
2019-05-24 782-242 not yet reported which blocks → TELUS Integrated Communications 2782 Prospect Road —
2019-05-24 782-243 not yet reported which blocks → TELUS Integrated Communications 2782 Elmsdale —
2019-05-24 786-696 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 MIAMI FL
2019-05-24 848-837 0–9 XXXall 10 · 4 holders which blocks → CORETEL NEW JERSEY, INC. - NJ 482F MIDDLETOWN NJ
2019-05-24 929-531 0–9 XXXall 10 · 4 holders which blocks → CSC WIRELESS, LLC 425J NWYRCYZN13 NY
2019-05-24 929-610 0–9 XXXall 10 · 5 holders which blocks → CSC WIRELESS, LLC 425J NWYRCYZN04 NY
2019-05-24 940-373 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F JUSTIN TX
2019-05-23 208-203 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - ID 689F PARMA ID

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.