NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

0 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, 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
2015-07-07 916-794-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MICHIGNBAR CA
2015-07-07 916-882-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SCRM NORTH CA
2015-07-07 916-882-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SCRM NORTH CA
2015-07-07 916-882-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SCRM NORTH CA
2015-07-01 916-586-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 FOLSOM CA
2015-07-01 916-586-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 FOLSOM CA
2015-07-01 916-793-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ELK GROVE CA
2015-07-01 916-805-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FOLSOM CA
2015-06-29 916-793-2XXX 2000–2999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J ELK GROVE CA
2015-06-29 916-793-3XXX 3000–3999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J ELK GROVE CA
2015-06-29 916-882-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SCRM NORTH CA
2015-06-29 916-882-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SCRM NORTH CA
2015-06-29 916-882-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SCRM NORTH CA
2015-06-29 916-882-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SCRM NORTH CA
2015-06-29 916-882-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SCRM NORTH CA
2015-06-29 916-882-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SCRM NORTH CA
2015-06-29 916-882-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SCRM NORTH CA
2015-06-22 916-693-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 FOLSOM CA
2015-06-22 916-693-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 FOLSOM CA
2015-06-22 916-953-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RSVL MAIN CA
2015-06-22 916-953-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RSVL MAIN CA
2015-06-18 916-664-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SCRM NORTH CA
2015-06-17 916-664-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SCRM NORTH CA
2015-06-17 916-664-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SCRM NORTH CA
2015-06-17 916-890-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SCRM NORTH CA
2015-06-17 916-890-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SCRM NORTH CA
2015-06-17 916-890-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SCRM NORTH CA
2015-06-17 916-890-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SCRM NORTH CA
2015-06-17 916-890-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SCRM NORTH CA
2015-06-17 916-890-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SCRM NORTH CA
2015-06-09 916-584-7XXX 7000–7999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SCRM MAIN CA
2015-06-03 916-584-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SCRM MAIN CA
2015-06-03 916-841-0XXX 0000–0999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SCRM MAIN CA
2015-06-03 916-841-1XXX 1000–1999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SCRM MAIN CA
2015-06-03 916-841-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SCRM MAIN CA
2015-06-02 916-824-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SO PLACER CA
2015-06-01 916-738-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SCRM MAIN CA
2015-06-01 916-738-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 SCRM MAIN CA
2015-06-01 916-738-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SCRM MAIN CA
2015-06-01 916-738-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SCRM MAIN CA
2015-06-01 916-738-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SCRM MAIN CA
2015-05-27 916-238-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E RIO LINDA CA
2015-05-27 916-238-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E RIO LINDA CA
2015-05-27 916-238-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E RIO LINDA CA
2015-05-27 916-299-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E PLEASATGRV CA
2015-05-21 916-664-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SCRM NORTH CA
2015-05-21 916-664-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 SCRM NORTH CA
2015-05-19 916-890-3XXX 3000–3999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SCRM NORTH CA
2015-05-18 916-540-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 RSVL MAIN CA
2015-05-18 916-633-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FAIR OAKS CA

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.