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
2016-01-29 438-202 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Montreal —
2016-01-29 438-203 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Montreal —
2016-01-29 438-204 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Montreal —
2016-01-29 438-205 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Montreal —
2016-01-29 438-206 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Montreal —
2016-01-29 438-207 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Montreal —
2016-01-29 438-208 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Montreal —
2016-01-29 438-209 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Montreal —
2016-01-29 604-409 not yet reported which blocks → Iristel Inc. 154E Aldergrove —
2016-01-29 619-505 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - CA 649C NATIONALCY CA
2016-01-29 620-312 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF KANSAS, LLC - KS 018H YATES CTR KS
2016-01-29 647-325 not yet reported which blocks → Bell Mobility 6574 Toronto —
2016-01-29 647-326 not yet reported which blocks → Bell Mobility 6574 Toronto —
2016-01-29 650-770 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - CA 649C LOS ALTOS CA
2016-01-29 705-710 not yet reported which blocks → Iristel Inc. 154E Gravenhurst —
2016-01-29 709-500 not yet reported which blocks → Iristel Inc. 154E St. Alban's —
2016-01-29 856-212 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - NJ 637C VINELAND NJ
2016-01-29 856-272 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - NJ 637C WOODBURY NJ
2016-01-29 857-274 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BOSTON MA
2016-01-29 857-279 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NEWTON MA
2016-01-29 858-757 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - CA 649C SNDG MRMS CA
2016-01-29 867-362 not yet reported which blocks → Bell Mobility 6574 Beaver Creek —
2016-01-29 902-905 not yet reported which blocks → Iristel Inc. 154E Alberton —
2016-01-29 978-955 0–9 XXXall 10 · 5 holders which blocks → TC SYSTEMS, INC. 7135 LOWELL MA
2016-01-29 979-275 not yet reported which blocks → YK COMMUNICATIONS, LTD - TX 634H EL CAMPO TX
2016-01-28 226-449 not yet reported which blocks → Fibernetics Corporation 464D Fergus —
2016-01-28 226-542 not yet reported which blocks → Bell Mobility 6574 Chatham —
2016-01-28 226-543 not yet reported which blocks → Bell Mobility 6574 Goderich —
2016-01-28 236-317 not yet reported which blocks → Distributel 081E Vancouver —
2016-01-28 249-328 not yet reported which blocks → Bell Mobility 6574 North Bay —
2016-01-28 343-542 not yet reported which blocks → Bell Mobility 6574 Ottawa-Hull —
2016-01-28 343-544 not yet reported which blocks → Bell Mobility 6574 Pembroke —
2016-01-28 365-275 not yet reported which blocks → Bell Mobility 6574 Ajax-Pickering —
2016-01-28 385-331 0–9 XXXall 10 · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 AMERCNFORK UT
2016-01-28 437-317 not yet reported which blocks → Distributel 082E Toronto —
2016-01-28 438-316 not yet reported which blocks → Distributel 083E Montreal —
2016-01-28 475-228 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 ANSONIDRBY CT
2016-01-28 475-331 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 NEW HAVEN CT
2016-01-28 480-781 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - AZ 630E PHOENIX AZ
2016-01-28 505-355 0–9 XXXall 10 · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NM 7464 ALBUQURQUE NM
2016-01-28 531-212 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 OAKLAND NE
2016-01-28 540-779 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - VA 138E STAFFORD VA
2016-01-28 575-659 0–9 XXXall 10 · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NM 7464 LOVINGTON NM
2016-01-28 579-377 not yet reported which blocks → Fibernetics Corporation 464D Joliette —
2016-01-28 579-378 not yet reported which blocks → Fibernetics Corporation 464D Ste-Therese —
2016-01-28 581-447 not yet reported which blocks → Bell Mobility 6574 Chicoutimi —
2016-01-28 586-297 0–9 XXXall 10 · 2 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E CENTERLINE MI
2016-01-28 602-875 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - AZ 630E PHOENIX AZ
2016-01-28 619-305 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - CA 649C CHULAVISTA CA
2016-01-28 620-299 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF KANSAS, LLC - KS 018H HUMBOLDT KS

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.