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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2011-01-26 916-672-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SO PLACER CA
2011-01-26 916-672-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SO PLACER CA
2011-01-26 916-877-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM NORTH CA
2011-01-26 916-877-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM NORTH CA
2011-01-26 916-877-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM NORTH CA
2011-01-26 916-877-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM NORTH CA
2011-01-26 916-877-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM NORTH CA
2011-01-26 916-877-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM NORTH CA
2011-01-21 916-896-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ELK GROVE CA
2011-01-07 916-790-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FOLSOM CA
2011-01-07 916-822-0XXX 0000–0999Assigned METROPCS, INC. 5562 SCRM MAIN CA
2011-01-07 916-822-1XXX 1000–1999Assigned METROPCS, INC. 5562 SCRM MAIN CA
2011-01-06 916-903-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FAIR OAKS CA
2010-12-23 916-945-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7128 RSVL MAIN CA
2010-12-21 916-544-7XXX 7000–7999Assigned METROPCS, INC. 5562 ELK GROVE CA
2010-12-13 916-512-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ELK GROVE CA
2010-12-13 916-546-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 FAIR OAKS CA
2010-12-13 916-877-2XXX 2000–2999Assigned PACIFIC BELL 9740 SCRM NORTH CA
2010-12-13 916-877-3XXX 3000–3999Assigned PACIFIC BELL 9740 SCRM NORTH CA
2010-12-03 916-234-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MICHIGNBAR CA
2010-12-03 916-790-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E FOLSOM CA
2010-11-24 916-918-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 RSVL MAIN CA
2010-11-22 916-888-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 RSVL MAIN CA
2010-11-22 916-888-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 RSVL MAIN CA
2010-11-22 916-888-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 RSVL MAIN CA
2010-11-22 916-888-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 RSVL MAIN CA
2010-11-22 916-888-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 RSVL MAIN CA
2010-11-22 916-888-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C RSVL MAIN CA
2010-11-22 916-888-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C RSVL MAIN CA
2010-11-22 916-888-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C RSVL MAIN CA
2010-11-22 916-888-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C RSVL MAIN CA
2010-11-22 916-999-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SCRM NORTH CA
2010-11-19 916-668-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SCRM MAIN CA
2010-11-19 916-668-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SCRM MAIN CA
2010-11-19 916-668-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SCRM MAIN CA
2010-11-19 916-777-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C ISLETON CA
2010-11-19 916-777-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C ISLETON CA
2010-11-18 916-999-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C SCRM NORTH CA
2010-11-18 916-999-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C SCRM NORTH CA
2010-11-18 916-999-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C SCRM NORTH CA
2010-11-17 916-527-7XXX 7000–7999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J WALNUT GRV CA
2010-11-09 916-742-1XXX 1000–1999Assigned FIDIUM ENTERPRISE SERVICES, LLC 3964 RSVL MAIN CA
2010-11-03 916-234-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C MICHIGNBAR CA
2010-11-03 916-303-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SO PLACER CA
2010-11-03 916-437-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SCRM NORTH CA
2010-11-03 916-822-8XXX 8000–8999Assigned FIDIUM ENTERPRISE SERVICES, LLC 3964 SCRM MAIN CA
2010-11-01 916-900-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C SCRM NORTH CA
2010-10-29 916-790-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 FOLSOM CA
2010-10-25 916-757-3XXX 3000–3999Assigned METROPCS, INC. 5562 RSVL MAIN CA
2010-10-25 916-757-4XXX 4000–4999Assigned METROPCS, INC. 5562 RSVL MAIN 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.