NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

9 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.

Most active assignees, last 30 days — NPA 928
INTRADO COMMUNICATIONS, LLC 3
CSC WIRELESS, LLC 2
AHOI LLC 2
NEW CINGULAR WIRELESS PCS, LLC 1
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 1
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 thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2012-10-03 928-297-7XXX 7000–7999Assigned ONVOY, LLC - AZ 630E HOLBROOK AZ
2012-10-03 928-457-1XXX 1000–1999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F SNOWFLAKE AZ
2012-10-03 928-457-3XXX 3000–3999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F SNOWFLAKE AZ
2012-10-03 928-457-4XXX 4000–4999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F SNOWFLAKE AZ
2012-10-03 928-457-5XXX 5000–5999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F SNOWFLAKE AZ
2012-10-03 928-466-0XXX 0000–0999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F CASTLEROCK AZ
2012-10-03 928-466-1XXX 1000–1999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F CASTLEROCK AZ
2012-10-03 928-466-2XXX 2000–2999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F CASTLEROCK AZ
2012-10-03 928-466-3XXX 3000–3999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F CASTLEROCK AZ
2012-10-03 928-735-1XXX 1000–1999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F GREER AZ
2012-10-03 928-735-3XXX 3000–3999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F GREER AZ
2012-10-03 928-735-6XXX 6000–6999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F GREER AZ
2012-10-03 928-735-8XXX 8000–8999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F GREER AZ
2012-10-03 928-765-0XXX 0000–0999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F WIKIEUP AZ
2012-10-03 928-765-1XXX 1000–1999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F WIKIEUP AZ
2012-10-03 928-765-3XXX 3000–3999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F WIKIEUP AZ
2012-10-03 928-765-4XXX 4000–4999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F WIKIEUP AZ
2012-09-21 928-323-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 SOMERTON AZ
2012-09-21 928-323-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 SOMERTON AZ
2012-09-20 928-940-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PINETOP AZ
2012-09-19 928-362-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F SAFFORD AZ
2012-08-09 928-285-9XXX 9000–9999Assigned AT&T - LOCAL 7421 SOMERTON AZ
2012-08-08 928-228-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PIMA AZ
2012-08-08 928-228-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PIMA AZ
2012-08-08 928-551-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 SPRINGERVL AZ
2012-08-03 928-350-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PRESCOTT AZ
2012-07-03 928-494-0XXX 0000–0999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F SEDONA AZ
2012-07-03 928-494-1XXX 1000–1999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F SEDONA AZ
2012-07-03 928-494-2XXX 2000–2999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F SEDONA AZ
2012-07-03 928-494-3XXX 3000–3999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F SEDONA AZ
2012-07-03 928-494-4XXX 4000–4999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F SEDONA AZ
2012-07-03 928-494-5XXX 5000–5999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F SEDONA AZ
2012-07-03 928-494-6XXX 6000–6999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F SEDONA AZ
2012-07-03 928-494-7XXX 7000–7999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F SEDONA AZ
2012-07-03 928-494-8XXX 8000–8999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F SEDONA AZ
2012-07-03 928-494-9XXX 9000–9999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F SEDONA AZ
2012-07-02 928-514-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 BULLHEADCY AZ
2012-07-02 928-514-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BULLHEADCY AZ
2012-06-27 928-362-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SAFFORD AZ
2012-05-31 928-248-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 YUMA AZ
2012-05-31 928-793-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 GLOBE AZ
2012-05-24 928-433-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 FLAGSTAFF AZ
2012-05-22 928-514-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BULLHEADCY AZ
2012-05-21 928-323-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 SOMERTON AZ
2012-05-18 928-224-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F WINSLOW AZ
2012-05-18 928-651-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F SAFFORD AZ
2012-05-15 928-515-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PRESCOTT AZ
2012-05-15 928-589-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 WINSLOW AZ
2012-05-11 928-228-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PIMA AZ
2012-05-10 928-275-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F GLOBE AZ

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.