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
2012-10-01 916-895-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ELK GROVE CA
2012-09-26 916-245-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SCRM MAIN CA
2012-09-26 916-245-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SCRM MAIN CA
2012-09-21 916-252-8XXX 8000–8999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J PLEASATGRV CA
2012-09-21 916-546-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E FAIR OAKS CA
2012-09-21 916-864-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E FAIR OAKS CA
2012-09-14 916-822-3XXX 3000–3999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7174 SCRM MAIN CA
2012-09-10 916-346-1XXX 1000–1999Assigned METROPCS, INC. 5562 SCRM MAIN CA
2012-09-10 916-346-3XXX 3000–3999Assigned METROPCS, INC. 5562 SCRM MAIN CA
2012-09-10 916-533-7XXX 7000–7999Assigned METROPCS, INC. 5562 SCRM MAIN CA
2012-09-10 916-533-8XXX 8000–8999Assigned METROPCS, INC. 5562 SCRM MAIN CA
2012-09-10 916-542-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E FOLSOM CA
2012-09-10 916-542-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E FOLSOM CA
2012-09-10 916-542-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E FOLSOM CA
2012-09-10 916-879-8XXX 8000–8999Assigned METROPCS, INC. 5562 SCRM MAIN CA
2012-09-10 916-879-9XXX 9000–9999Assigned METROPCS, INC. 5562 SCRM MAIN CA
2012-09-07 916-438-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SCRM MAIN CA
2012-08-27 916-242-5XXX 5000–5999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F RSVL CTHT CA
2012-08-24 916-496-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FOLSOM CA
2012-08-24 916-500-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FOLSOM CA
2012-08-16 916-500-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C FOLSOM CA
2012-08-15 916-403-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J SCRM MAIN CA
2012-08-10 916-414-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SCRM MAIN CA
2012-08-10 916-583-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SCRM MAIN CA
2012-08-03 916-426-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SCRM NORTH CA
2012-08-03 916-662-7XXX 7000–7999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SCRM MAIN CA
2012-08-03 916-896-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ELK GROVE CA
2012-07-30 916-304-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MICHIGNBAR CA
2012-07-30 916-304-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MICHIGNBAR CA
2012-07-19 916-512-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ELK GROVE CA
2012-07-17 916-228-0XXX 0000–0999Assigned METROPCS, INC. 5562 SCRM MAIN CA
2012-07-17 916-228-1XXX 1000–1999Assigned METROPCS, INC. 5562 SCRM MAIN CA
2012-07-17 916-229-2XXX 2000–2999Assigned METROPCS, INC. 5562 SCRM MAIN CA
2012-07-17 916-229-7XXX 7000–7999Assigned METROPCS, INC. 5562 SCRM MAIN CA
2012-07-17 916-255-7XXX 7000–7999Assigned METROPCS, INC. 5562 SCRM MAIN CA
2012-07-13 916-663-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SO PLACER CA
2012-07-13 916-919-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SCRM MAIN CA
2012-06-21 916-218-0XXX 0000–0999Assigned METROPCS, INC. 5562 RSVL MAIN CA
2012-06-21 916-666-8XXX 8000–8999Assigned METROPCS, INC. 5562 RSVL MAIN CA
2012-06-21 916-945-0XXX 0000–0999Assigned METROPCS, INC. 5562 RSVL MAIN CA
2012-06-15 916-304-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MICHIGNBAR CA
2012-06-15 916-560-4XXX 4000–4999Assigned FIDIUM ENTERPRISE SERVICES, LLC 3964 RSVL CTHT CA
2012-06-12 916-307-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SCRM MAIN CA
2012-06-07 916-462-9XXX 9000–9999Assigned PAETEC ITEL, LLC 829J RSVL MAIN CA
2012-06-01 916-945-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 RSVL MAIN CA
2012-05-30 916-228-9XXX 9000–9999Assigned METROPCS, INC. 5562 SCRM MAIN CA
2012-05-30 916-262-4XXX 4000–4999Assigned METROPCS, INC. 5562 SCRM MAIN CA
2012-05-24 916-228-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7128 SCRM MAIN CA
2012-05-24 916-228-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7128 SCRM MAIN CA
2012-05-22 916-625-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SO PLACER 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.