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
2014-09-04 916-318-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C SCRM MAIN CA
2014-09-04 916-318-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C SCRM MAIN CA
2014-09-04 916-805-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FOLSOM CA
2014-09-04 916-827-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FAIR OAKS CA
2014-09-04 916-827-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FAIR OAKS CA
2014-09-02 916-634-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C SCRM NORTH CA
2014-09-02 916-634-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C SCRM NORTH CA
2014-08-29 916-577-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SO PLACER CA
2014-08-28 916-318-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 SCRM MAIN CA
2014-08-28 916-318-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SCRM MAIN CA
2014-08-27 916-540-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 RSVL MAIN CA
2014-08-22 916-582-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ELK GROVE CA
2014-08-22 916-582-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ELK GROVE CA
2014-08-21 916-634-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SCRM NORTH CA
2014-08-21 916-634-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SCRM NORTH CA
2014-08-21 916-805-2XXX 2000–2999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J FOLSOM CA
2014-08-18 916-407-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SCRM NORTH CA
2014-08-18 916-407-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SCRM NORTH CA
2014-08-18 916-407-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SCRM NORTH CA
2014-08-18 916-407-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SCRM NORTH CA
2014-08-18 916-430-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ELK GROVE CA
2014-08-18 916-430-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ELK GROVE CA
2014-08-15 916-805-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 FOLSOM CA
2014-08-13 916-259-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SO PLACER CA
2014-08-13 916-824-1XXX 1000–1999Assigned ASTOUND BROADBAND, LLC - CA 485E SO PLACER CA
2014-08-13 916-827-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 FAIR OAKS CA
2014-08-12 916-584-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SCRM MAIN CA
2014-08-12 916-584-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SCRM MAIN CA
2014-08-12 916-584-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SCRM MAIN CA
2014-08-12 916-584-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SCRM MAIN CA
2014-08-12 916-584-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SCRM MAIN CA
2014-08-12 916-584-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SCRM MAIN CA
2014-08-12 916-584-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SCRM MAIN CA
2014-08-08 916-805-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FOLSOM CA
2014-08-06 916-805-5XXX 5000–5999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L FOLSOM CA
2014-08-05 916-407-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM NORTH CA
2014-08-05 916-407-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM NORTH CA
2014-08-05 916-407-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM NORTH CA
2014-08-05 916-407-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM NORTH CA
2014-08-05 916-407-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM NORTH CA
2014-08-05 916-407-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM NORTH CA
2014-08-05 916-430-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ELK GROVE CA
2014-08-05 916-430-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ELK GROVE CA
2014-08-05 916-827-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E FAIR OAKS CA
2014-08-05 916-827-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E FAIR OAKS CA
2014-08-01 916-318-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM MAIN CA
2014-08-01 916-318-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM MAIN CA
2014-08-01 916-318-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM MAIN CA
2014-08-01 916-318-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM MAIN CA
2014-08-01 916-318-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E 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.