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
2013-01-24 916-672-6XXX 6000–6999Assigned ASTOUND BROADBAND, LLC - CA 485E SO PLACER CA
2013-01-11 916-895-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ELK GROVE CA
2013-01-07 916-732-3XXX 3000–3999Assigned FIDIUM ENTERPRISE SERVICES, LLC 3964 SCRM MAIN CA
2012-12-31 916-264-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM MAIN CA
2012-12-31 916-277-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM MAIN CA
2012-12-21 916-297-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RSVL MAIN CA
2012-12-20 916-339-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SCRM NORTH CA
2012-12-20 916-896-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ELK GROVE CA
2012-12-19 916-403-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SCRM MAIN CA
2012-12-12 916-329-8XXX 8000–8999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SCRM MAIN CA
2012-12-11 916-297-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 RSVL MAIN CA
2012-12-11 916-297-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 RSVL MAIN CA
2012-12-05 916-292-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C FOLSOM CA
2012-12-05 916-292-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C FOLSOM CA
2012-12-03 916-299-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C PLEASATGRV CA
2012-12-03 916-299-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C PLEASATGRV CA
2012-12-03 916-352-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C MICHIGNBAR CA
2012-12-03 916-468-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C RIO LINDA CA
2012-12-03 916-587-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LINCOLN CA
2012-12-03 916-587-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C LINCOLN CA
2012-12-03 916-943-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C RIO LINDA CA
2012-11-27 916-389-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SCRM MAIN CA
2012-11-26 916-502-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SCRM MAIN CA
2012-11-26 916-502-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SCRM MAIN CA
2012-11-15 916-297-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 RSVL MAIN CA
2012-11-14 916-245-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM MAIN CA
2012-11-14 916-245-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM MAIN CA
2012-11-14 916-245-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM MAIN CA
2012-11-14 916-245-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM MAIN CA
2012-11-14 916-245-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM MAIN CA
2012-11-14 916-245-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM MAIN CA
2012-11-14 916-245-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM MAIN CA
2012-11-14 916-382-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM MAIN CA
2012-11-14 916-426-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM NORTH CA
2012-11-14 916-426-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM NORTH CA
2012-11-14 916-426-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM NORTH CA
2012-11-14 916-432-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E RIO LINDA CA
2012-11-14 916-710-7XXX 7000–7999Assigned NUSO, LLC 551G SCRM MAIN CA
2012-11-12 916-623-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ISLETON CA
2012-10-31 916-462-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RSVL MAIN CA
2012-10-19 916-426-1XXX 1000–1999Assigned FIDIUM ENTERPRISE SERVICES, LLC 3964 SCRM NORTH CA
2012-10-19 916-462-5XXX 5000–5999Assigned LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 7718 RSVL MAIN CA
2012-10-19 916-462-6XXX 6000–6999Assigned FIDIUM ENTERPRISE SERVICES, LLC 3964 RSVL MAIN CA
2012-10-19 916-462-8XXX 8000–8999Assigned FIDIUM ENTERPRISE SERVICES, LLC 3964 RSVL MAIN CA
2012-10-16 916-388-3XXX 3000–3999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SCRM MAIN CA
2012-10-16 916-468-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C RIO LINDA CA
2012-10-16 916-587-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C LINCOLN CA
2012-10-12 916-292-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C FOLSOM CA
2012-10-11 916-462-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 RSVL MAIN CA
2012-10-01 916-895-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ELK GROVE 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.