NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

9 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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
2007-09-21 928-961-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 GLOBE AZ
2007-09-19 928-219-0XXX 0000–0999Assigned METROPCS, INC. 5562 BULLHEADCY AZ
2007-09-19 928-247-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 YUMA AZ
2007-09-19 928-247-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 YUMA AZ
2007-09-13 928-566-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LKHAVASUCY AZ
2007-09-12 928-315-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SOMERTON AZ
2007-08-22 928-254-3XXX 3000–3999Assigned ONVOY, LLC - AZ 630E SEDONA AZ
2007-08-22 928-468-3XXX 3000–3999Assigned ONVOY, LLC - AZ 630E PAYSON AZ
2007-08-17 928-263-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KINGMAN AZ
2007-08-17 928-266-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 FLAGSTAFF AZ
2007-08-17 928-358-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PINETOP AZ
2007-08-17 928-499-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PRESCOTT AZ
2007-08-17 928-499-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PRESCOTT AZ
2007-08-17 928-961-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 GLOBE AZ
2007-08-01 928-266-1XXX 1000–1999Assigned CSC VOICE, LLC 612K FLAGSTAFF AZ
2007-07-31 928-575-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PARKER AZ
2007-07-10 928-227-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PRESCOTT AZ
2007-07-10 928-237-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PRESCOTT AZ
2007-06-28 928-219-9XXX 9000–9999Assigned METROPCS, INC. 5562 BULLHEADCY AZ
2007-06-28 928-487-9XXX 9000–9999Assigned QWEST CORPORATION 9636 GLOBE AZ
2007-06-14 928-266-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 FLAGSTAFF AZ
2007-06-14 928-266-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 FLAGSTAFF AZ
2007-06-12 928-232-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 WICKENBURG AZ
2007-06-12 928-266-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 FLAGSTAFF AZ
2007-06-12 928-304-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 YUMA AZ
2007-06-12 928-304-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 YUMA AZ
2007-06-12 928-499-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PRESCOTT AZ
2007-06-07 928-432-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SAFFORD AZ
2007-05-31 928-247-8XXX 8000–8999Assigned QWEST CORPORATION 9636 YUMA AZ
2007-05-31 928-637-7XXX 7000–7999Assigned QWEST CORPORATION 9636 FLAGSTAFF AZ
2007-05-15 928-304-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 YUMA AZ
2007-05-15 928-304-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 YUMA AZ
2007-05-14 928-478-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PAYSON AZ
2007-05-11 928-237-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PRESCOTT AZ
2007-05-09 928-263-4XXX 4000–4999Assigned CITIZENS UTILITIES RURAL DBA FRONTIER UT RURAL 2172 KINGMAN AZ
2007-05-08 928-219-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BULLHEADCY AZ
2007-05-01 928-231-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 WICKENBURG AZ
2007-05-01 928-232-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 WICKENBURG AZ
2007-04-26 928-432-7XXX 7000–7999Assigned ONVOY, LLC - AZ 630E SAFFORD AZ
2007-04-26 928-485-6XXX 6000–6999Assigned ONVOY, LLC - AZ 630E PIMA AZ
2007-04-26 928-793-7XXX 7000–7999Assigned ONVOY, LLC - AZ 630E GLOBE AZ
2007-04-25 928-224-7XXX 7000–7999Assigned ONVOY, LLC - AZ 630E WINSLOW AZ
2007-04-25 928-272-7XXX 7000–7999Assigned ONVOY, LLC - AZ 630E GRANDCNYON AZ
2007-04-25 928-302-5XXX 5000–5999Assigned CITIZENS UTILITIES RURAL DBA FRONTIER UT RURAL 2172 LKHAVASUCY AZ
2007-04-25 928-304-7XXX 7000–7999Assigned ONVOY, LLC - AZ 630E YUMA AZ
2007-04-25 928-399-7XXX 7000–7999Assigned ONVOY, LLC - AZ 630E SEDONA AZ
2007-04-25 928-415-7XXX 7000–7999Assigned ONVOY, LLC - AZ 630E WICKENBURG AZ
2007-04-25 928-476-7XXX 7000–7999Assigned ONVOY, LLC - AZ 630E PAYSON AZ
2007-04-25 928-482-7XXX 7000–7999Assigned ONVOY, LLC - AZ 630E GILA BEND AZ
2007-04-25 928-550-7XXX 7000–7999Assigned ONVOY, LLC - AZ 630E SOMERTON AZ

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.