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
2026-01-14 928-557-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SAFFORD AZ
2026-01-07 928-539-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 YUMA AZ
2026-01-07 928-548-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 YUMA AZ
2026-01-07 928-933-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PINETOP AZ
2025-12-12 928-510-5XXX 5000–5999Assigned TERRA NOVA TELECOM INC. 145J SOMERTON AZ
2025-12-10 928-383-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CHINLE AZ
2025-11-21 928-549-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 FLAGSTAFF AZ
2025-11-21 928-800-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PRESCOTT AZ
2025-11-19 928-509-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 YUMA AZ
2025-11-19 928-512-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 SOMERTON AZ
2025-11-19 928-512-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 SOMERTON AZ
2025-11-06 928-553-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BULLHEADCY AZ
2025-11-06 928-553-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BULLHEADCY AZ
2025-11-05 928-290-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BAGDAD AZ
2025-11-05 928-387-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 SAFFORD AZ
2025-10-10 928-270-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 SPRINGERVL AZ
2025-10-10 928-549-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 FLAGSTAFF AZ
2025-10-03 928-419-3XXX 3000–3999Assigned HD CARRIER LLC 321J FLAGSTAFF AZ
2025-10-03 928-546-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 BULLHEADCY AZ
2025-10-03 928-547-4XXX 4000–4999Assigned HD CARRIER LLC 321J FLAGSTAFF AZ
2025-10-03 928-547-5XXX 5000–5999Assigned HD CARRIER LLC 321J FLAGSTAFF AZ
2025-10-03 928-547-7XXX 7000–7999Assigned HD CARRIER LLC 321J FLAGSTAFF AZ
2025-10-03 928-547-9XXX 9000–9999Assigned HD CARRIER LLC 321J FLAGSTAFF AZ
2025-10-01 928-361-4XXX 4000–4999Assigned VALLEY CONNECTIONS, L.L.C. - AZ 183D PIMA AZ
2025-09-25 928-265-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 CASTLEROCK AZ
2025-09-19 928-435-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 BULLHEADCY AZ
2025-09-16 928-799-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SEDONA AZ
2025-09-16 928-799-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SEDONA AZ
2025-09-16 928-799-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SEDONA AZ
2025-09-16 928-799-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SEDONA AZ
2025-09-16 928-799-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SEDONA AZ
2025-09-16 928-799-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SEDONA AZ
2025-09-16 928-799-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SEDONA AZ
2025-09-16 928-799-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SEDONA AZ
2025-09-16 928-799-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SEDONA AZ
2025-09-16 928-799-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SEDONA AZ
2025-09-12 928-212-0XXX 0000–0999Assigned TERRA NOVA TELECOM INC. 145J PAGE AZ
2025-09-12 928-224-6XXX 6000–6999Assigned TERRA NOVA TELECOM INC. 145J WINSLOW AZ
2025-09-12 928-512-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SOMERTON AZ
2025-09-12 928-668-7XXX 7000–7999Assigned TERRA NOVA TELECOM INC. 145J WICKENBURG AZ
2025-09-12 928-801-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SEDONA AZ
2025-09-12 928-801-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SEDONA AZ
2025-09-12 928-801-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SEDONA AZ
2025-09-12 928-801-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SEDONA AZ
2025-09-12 928-801-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SEDONA AZ
2025-09-12 928-801-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SEDONA AZ
2025-09-12 928-801-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SEDONA AZ
2025-09-12 928-801-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SEDONA AZ
2025-09-12 928-801-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SEDONA AZ
2025-09-12 928-801-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SEDONA 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.