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
2010-06-09 916-896-3XXX 3000–3999Assigned FIDIUM ENTERPRISE SERVICES, LLC 3964 ELK GROVE CA
2010-06-08 916-259-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SO PLACER CA
2010-06-08 916-281-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM MAIN CA
2010-06-08 916-282-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM MAIN CA
2010-06-08 916-287-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM MAIN CA
2010-06-08 916-287-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM MAIN CA
2010-06-08 916-287-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM MAIN CA
2010-06-08 916-467-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E FOLSOM CA
2010-06-08 916-514-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM NORTH CA
2010-06-08 916-546-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E FAIR OAKS CA
2010-06-08 916-550-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM NORTH CA
2010-06-08 916-604-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM NORTH CA
2010-06-08 916-692-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM NORTH CA
2010-06-08 916-692-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM NORTH CA
2010-06-04 916-913-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SCRM NORTH CA
2010-06-01 916-757-6XXX 6000–6999Assigned CONSOLIDATED COMMUNICATIONS OF CALIFORNIA COMPANY 2334 RSVL MAIN CA
2010-05-27 916-625-3XXX 3000–3999Assigned FIDIUM ENTERPRISE SERVICES, LLC 3964 SO PLACER CA
2010-05-24 916-596-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SCRM MAIN CA
2010-05-19 916-287-5XXX 5000–5999Assigned METROPCS, INC. 5562 SCRM MAIN CA
2010-05-19 916-287-6XXX 6000–6999Assigned METROPCS, INC. 5562 SCRM MAIN CA
2010-05-14 916-546-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E FAIR OAKS CA
2010-04-27 916-692-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C SCRM NORTH CA
2010-04-19 916-742-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L RSVL MAIN CA
2010-04-19 916-742-5XXX 5000–5999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L RSVL MAIN CA
2010-04-19 916-896-5XXX 5000–5999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L ELK GROVE CA
2010-04-14 916-822-4XXX 4000–4999Assigned AT&T ENTERPRISES, LLC 516C SCRM MAIN CA
2010-04-13 916-409-4XXX 4000–4999Assigned FIDIUM ENTERPRISE SERVICES, LLC 3964 LINCOLN CA
2010-04-13 916-740-4XXX 4000–4999Assigned FIDIUM ENTERPRISE SERVICES, LLC 3964 RSVL MAIN CA
2010-04-05 916-259-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SO PLACER CA
2010-03-25 916-637-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J SCRM MAIN CA
2010-03-23 916-365-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 FOLSOM CA
2010-03-23 916-692-7XXX 7000–7999Assigned LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 7718 SCRM NORTH CA
2010-03-11 916-596-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SCRM MAIN CA
2010-03-11 916-596-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SCRM MAIN CA
2010-03-09 916-604-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SCRM NORTH CA
2010-03-09 916-637-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SCRM MAIN CA
2010-02-17 916-678-2XXX 2000–2999Assigned METROPCS, INC. 5562 SCRM NORTH CA
2010-02-17 916-678-8XXX 8000–8999Assigned METROPCS, INC. 5562 SCRM NORTH CA
2010-02-17 916-678-9XXX 9000–9999Assigned METROPCS, INC. 5562 SCRM NORTH CA
2010-02-17 916-692-4XXX 4000–4999Assigned METROPCS, INC. 5562 SCRM NORTH CA
2010-02-17 916-692-6XXX 6000–6999Assigned METROPCS, INC. 5562 SCRM NORTH CA
2010-02-17 916-915-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RIO LINDA CA
2010-02-16 916-512-4XXX 4000–4999Assigned CITIZENS TELECOM CA. DBA FRONTIER COM OF CA 2308 ELK GROVE CA
2010-02-11 916-287-4XXX 4000–4999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SCRM MAIN CA
2010-02-11 916-520-7XXX 7000–7999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SCRM MAIN CA
2010-02-06 916-660-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SO PLACER CA
2010-02-06 916-740-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RSVL MAIN CA
2010-02-05 916-934-1XXX 1000–1999Assigned ASTOUND BROADBAND, LLC - CA 485E FOLSOM CA
2010-02-04 916-544-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ELK GROVE CA
2010-02-03 916-237-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E RIO LINDA 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.