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
2014-05-27 916-241-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FAIR OAKS CA
2014-05-27 916-352-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MICHIGNBAR CA
2014-05-27 916-352-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MICHIGNBAR CA
2014-05-23 916-696-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SCRM NORTH CA
2014-05-23 916-696-7XXX 7000–7999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SCRM NORTH CA
2014-05-20 916-741-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SO PLACER CA
2014-05-20 916-778-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SO PLACER CA
2014-05-20 916-778-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SO PLACER CA
2014-05-19 916-917-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SCRM MAIN CA
2014-05-15 916-382-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SCRM MAIN CA
2014-05-15 916-385-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ELK GROVE CA
2014-05-15 916-385-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ELK GROVE CA
2014-05-15 916-589-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SCRM MAIN CA
2014-05-14 916-387-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SCRM MAIN CA
2014-05-14 916-431-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SCRM MAIN CA
2014-05-14 916-491-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SCRM MAIN CA
2014-05-14 916-617-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SCRM MAIN CA
2014-05-14 916-629-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MEADOWVIEW CA
2014-05-14 916-658-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SCRM MAIN CA
2014-05-14 916-744-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J COURTLAND CA
2014-05-14 916-856-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SCRM MAIN CA
2014-05-12 916-846-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 RSVL MAIN CA
2014-05-12 916-846-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 RSVL MAIN CA
2014-05-12 916-846-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 RSVL MAIN CA
2014-04-30 916-385-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ELK GROVE CA
2014-04-23 916-936-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E FOLSOM CA
2014-04-23 916-936-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E FOLSOM CA
2014-04-23 916-936-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E FOLSOM CA
2014-04-23 916-936-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E FOLSOM CA
2014-04-18 916-696-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SCRM NORTH CA
2014-04-14 916-756-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 COURTLAND CA
2014-04-10 916-330-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SCRM MAIN CA
2014-04-08 916-936-4XXX 4000–4999Assigned AT&T ENTERPRISES, LLC 516C FOLSOM CA
2014-04-07 916-330-1XXX 1000–1999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SCRM MAIN CA
2014-04-03 916-936-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FOLSOM CA
2014-04-03 916-936-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FOLSOM CA
2014-04-03 916-936-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FOLSOM CA
2014-04-03 916-936-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FOLSOM CA
2014-04-01 916-696-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7128 SCRM NORTH CA
2014-03-31 916-330-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 SCRM MAIN CA
2014-03-31 916-727-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 RSVL CTHT CA
2014-03-31 916-936-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 FOLSOM CA
2014-03-24 916-330-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7128 SCRM MAIN CA
2014-03-24 916-696-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SCRM NORTH CA
2014-03-19 916-330-2XXX 2000–2999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SCRM MAIN CA
2014-03-19 916-756-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 COURTLAND CA
2014-03-19 916-789-3XXX 3000–3999Assigned FIDIUM ENTERPRISE SERVICES, LLC 3964 RSVL MAIN CA
2014-03-17 916-846-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 RSVL MAIN CA
2014-03-13 916-778-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SO PLACER CA
2014-03-12 916-330-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SCRM 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.