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
2016-02-02 605-643 5XXX which blocks → MIDCONTINENT COMMUNICATIONS. - SD 7076 SELBY SD
2016-02-02 612-249 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - MN 184D TWINCITIES MN
2016-02-02 786-498 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MIAMI FL
2016-02-02 804-203 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - VA 138E PETERSBURG VA
2016-02-02 904-299 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - FL 937C BALDWIN FL
2016-02-01 204-674 not yet reported which blocks → Iristel Inc. 154E Anola —
2016-02-01 205-293 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - AL 604E CENTREVL AL
2016-02-01 226-406 not yet reported which blocks → Iristel Inc. 154E Belmont —
2016-02-01 249-490 not yet reported which blocks → Iristel Inc. 154E Bobcaygeon —
2016-02-01 312-383 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 CHICGOZN01 IL
2016-02-01 343-943 not yet reported which blocks → Iristel Inc. 154E Bancroft —
2016-02-01 365-504 not yet reported which blocks → Distributel 082E Gormley —
2016-02-01 365-505 not yet reported which blocks → Distributel 082E Keswick —
2016-02-01 365-506 not yet reported which blocks → Distributel 082E King City —
2016-02-01 365-507 not yet reported which blocks → Distributel 082E Kleinburg —
2016-02-01 365-508 not yet reported which blocks → Distributel 082E Maple —
2016-02-01 365-509 not yet reported which blocks → Distributel 082E Markham —
2016-02-01 365-510 not yet reported which blocks → Distributel 082E Mount Albert —
2016-02-01 365-512 not yet reported which blocks → Distributel 082E Newmarket —
2016-02-01 365-514 not yet reported which blocks → Distributel 082E Nobleton —
2016-02-01 365-515 not yet reported which blocks → Distributel 082E Oak Ridges —
2016-02-01 407-675 0–9 XXXall 10 · 6 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 ORLANDO FL
2016-02-01 407-912 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 ORLANDO FL
2016-02-01 431-300 not yet reported which blocks → Iristel Inc. 154E Austin —
2016-02-01 440-797 0XXX1XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - OH 464C BEDFORD OH
2016-02-01 506-700 not yet reported which blocks → Iristel Inc. 154E Bouctouche —
2016-02-01 513-883 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HAMILTON OH
2016-02-01 561-264 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - FL 937C PAHOKEE FL
2016-02-01 587-507 not yet reported which blocks → Iristel Inc. 154E Blackfalds —
2016-02-01 587-806 not yet reported which blocks → Iristel Inc. 154E Anzac —
2016-02-01 587-907 not yet reported which blocks → Iristel Inc. 154E Banff —
2016-02-01 619-323 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNDG SNDG CA
2016-02-01 629-200 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GOODLETSVL TN
2016-02-01 631-305 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BRENTWOOD NY
2016-02-01 657-390 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - CA 649C ORANGE CA
2016-02-01 702-819 0–9 XXXwhole prefix which blocks → ONVOY, LLC - NV 029F LAS VEGAS NV
2016-02-01 709-703 not yet reported which blocks → Iristel Inc. 154E Bay Roberts —
2016-02-01 709-704 not yet reported which blocks → Iristel Inc. 154E Bonavista —
2016-02-01 856-502 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - NJ 637C MILLVILLE NJ
2016-02-01 902-903 not yet reported which blocks → Iristel Inc. 154E Barrington —
2016-02-01 902-906 not yet reported which blocks → Iristel Inc. 154E Amherst —
2016-02-01 902-907 not yet reported which blocks → Iristel Inc. 154E Annapolis Royal —
2016-02-01 902-908 not yet reported which blocks → Iristel Inc. 154E Antigonish —
2016-02-01 904-295 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - FL 937C ST JOHNS FL
2016-01-29 226-895 not yet reported which blocks → Iristel Inc. 154E Galt —
2016-01-29 249-500 not yet reported which blocks → Iristel Inc. 154E Algoma Mills —
2016-01-29 249-501 not yet reported which blocks → Iristel Inc. 154E Alliston —
2016-01-29 346-232 0–9 XXXall 10 · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 7239 HOUSTON TX
2016-01-29 438-200 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Montreal —
2016-01-29 438-201 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Montreal —

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.