NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

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, all time — NPA 916
T-MOBILE USA, INC. 446
ONVOY, LLC - CA 397
NEW CINGULAR WIRELESS PCS, LLC 374
METROPCS, INC. 362
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 331
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
2014-08-01 916-970-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM MAIN CA
2014-08-01 916-970-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM MAIN CA
2014-08-01 916-970-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM MAIN CA
2014-08-01 916-970-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM MAIN CA
2014-08-01 916-970-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM MAIN CA
2014-07-31 916-794-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MICHIGNBAR CA
2014-07-31 916-794-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MICHIGNBAR CA
2014-07-31 916-794-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MICHIGNBAR CA
2014-07-30 916-805-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 FOLSOM CA
2014-07-30 916-970-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7128 SCRM MAIN CA
2014-07-24 916-297-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 RSVL MAIN CA
2014-07-22 916-970-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C SCRM MAIN CA
2014-07-16 916-896-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ELK GROVE CA
2014-07-14 916-533-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SCRM MAIN CA
2014-07-14 916-661-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SCRM MAIN CA
2014-07-14 916-661-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SCRM MAIN CA
2014-07-14 916-661-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SCRM MAIN CA
2014-07-14 916-661-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SCRM MAIN CA
2014-07-14 916-661-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SCRM MAIN CA
2014-07-09 916-312-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C MICHIGNBAR CA
2014-07-03 916-385-5XXX 5000–5999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L ELK GROVE CA
2014-07-03 916-661-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SCRM MAIN CA
2014-07-03 916-805-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 FOLSOM CA
2014-06-23 916-533-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 SCRM MAIN CA
2014-06-20 916-318-4XXX 4000–4999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7174 SCRM MAIN CA
2014-06-20 916-696-2XXX 2000–2999Assigned AT&T ENTERPRISES, LLC 516C SCRM NORTH CA
2014-06-18 916-623-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ISLETON CA
2014-06-18 916-824-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SO PLACER CA
2014-06-17 916-970-6XXX 6000–6999Assigned AT&T - LOCAL 7421 SCRM MAIN CA
2014-06-16 916-696-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SCRM NORTH CA
2014-06-16 916-696-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SCRM NORTH CA
2014-06-16 916-735-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RSVL CTHT CA
2014-06-16 916-735-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RSVL CTHT CA
2014-06-16 916-805-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C FOLSOM CA
2014-06-13 916-347-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FAIR OAKS CA
2014-06-10 916-297-7XXX 7000–7999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L RSVL MAIN CA
2014-06-10 916-696-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SCRM NORTH CA
2014-06-10 916-796-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E RIO LINDA CA
2014-06-10 916-915-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E RIO LINDA CA
2014-06-06 916-354-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MICHIGNBAR CA
2014-06-06 916-527-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WALNUT GRV CA
2014-06-06 916-656-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PLEASATGRV CA
2014-06-06 916-943-3XXX 3000–3999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J RIO LINDA CA
2014-05-30 916-472-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 RSVL MAIN CA
2014-05-30 916-917-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SCRM MAIN CA
2014-05-30 916-917-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SCRM MAIN CA
2014-05-30 916-917-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SCRM MAIN CA
2014-05-30 916-917-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SCRM MAIN CA
2014-05-30 916-917-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SCRM MAIN CA
2014-05-30 916-917-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SCRM MAIN CA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.