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
2013-06-03 916-246-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SCRM NORTH CA
2013-05-28 916-246-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SCRM NORTH CA
2013-05-22 916-292-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FOLSOM CA
2013-05-22 916-292-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FOLSOM CA
2013-05-13 916-246-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C SCRM NORTH CA
2013-05-13 916-246-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C SCRM NORTH CA
2013-05-13 916-389-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C SCRM MAIN CA
2013-05-13 916-389-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C SCRM MAIN CA
2013-05-08 916-462-3XXX 3000–3999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J RSVL MAIN CA
2013-05-02 916-389-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SCRM MAIN CA
2013-05-02 916-462-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RSVL MAIN CA
2013-05-02 916-462-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RSVL MAIN CA
2013-04-29 916-246-4XXX 4000–4999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SCRM NORTH CA
2013-04-25 916-292-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E FOLSOM CA
2013-04-24 916-542-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FOLSOM CA
2013-04-24 916-542-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FOLSOM CA
2013-04-16 916-297-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 RSVL MAIN CA
2013-04-16 916-297-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 RSVL MAIN CA
2013-04-16 916-503-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 SCRM MAIN CA
2013-04-16 916-666-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 RSVL MAIN CA
2013-04-11 916-246-7XXX 7000–7999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SCRM NORTH CA
2013-04-08 916-900-8XXX 8000–8999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SCRM NORTH CA
2013-04-03 916-741-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SO PLACER CA
2013-04-03 916-741-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SO PLACER CA
2013-03-27 916-347-3XXX 3000–3999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F FAIR OAKS CA
2013-03-27 916-347-4XXX 4000–4999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F FAIR OAKS CA
2013-03-22 916-389-3XXX 3000–3999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7174 SCRM MAIN CA
2013-03-22 916-389-8XXX 8000–8999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7174 SCRM MAIN CA
2013-03-19 916-246-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SCRM NORTH CA
2013-03-19 916-246-1XXX 1000–1999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SCRM NORTH CA
2013-03-14 916-587-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LINCOLN CA
2013-03-06 916-542-4XXX 4000–4999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F FOLSOM CA
2013-03-06 916-587-4XXX 4000–4999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LINCOLN CA
2013-03-06 916-702-3XXX 3000–3999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F PLEASATGRV CA
2013-03-06 916-794-3XXX 3000–3999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F MICHIGNBAR CA
2013-03-06 916-796-4XXX 4000–4999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F RIO LINDA CA
2013-03-06 916-824-3XXX 3000–3999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SO PLACER CA
2013-03-04 916-246-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7128 SCRM NORTH CA
2013-03-04 916-533-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C SCRM MAIN CA
2013-03-04 916-778-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C SO PLACER CA
2013-02-22 916-900-7XXX 7000–7999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SCRM NORTH CA
2013-02-14 916-426-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C SCRM NORTH CA
2013-02-14 916-915-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C RIO LINDA CA
2013-02-13 916-299-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C PLEASATGRV CA
2013-02-13 916-312-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C MICHIGNBAR CA
2013-02-11 916-297-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 RSVL MAIN CA
2013-02-06 916-895-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L ELK GROVE CA
2013-01-28 916-737-6XXX 6000–6999Assigned METROPCS, INC. 5562 SCRM MAIN CA
2013-01-28 916-737-8XXX 8000–8999Assigned METROPCS, INC. 5562 SCRM MAIN CA
2013-01-28 916-737-9XXX 9000–9999Assigned METROPCS, INC. 5562 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.