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
2017-12-08 916-975-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SO PLACER CA
2017-12-07 916-918-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RSVL MAIN CA
2017-12-07 916-918-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RSVL MAIN CA
2017-11-28 916-619-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SCRM MAIN CA
2017-11-28 916-857-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SCRM MAIN CA
2017-11-13 916-413-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FOLSOM CA
2017-11-13 916-413-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FOLSOM CA
2017-11-13 916-413-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FOLSOM CA
2017-11-13 916-918-8XXX 8000–8999Assigned ASTOUND BROADBAND, LLC - CA 485E RSVL MAIN CA
2017-11-08 916-345-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM NORTH CA
2017-11-08 916-345-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM NORTH CA
2017-11-08 916-713-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM NORTH CA
2017-10-30 916-693-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FOLSOM CA
2017-10-24 916-918-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RSVL MAIN CA
2017-10-24 916-918-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RSVL MAIN CA
2017-10-19 916-713-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C SCRM NORTH CA
2017-10-19 916-713-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C SCRM NORTH CA
2017-10-19 916-713-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C SCRM NORTH CA
2017-10-11 916-619-8XXX 8000–8999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SCRM MAIN CA
2017-10-04 916-629-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 MEADOWVIEW CA
2017-09-26 916-345-5XXX 5000–5999Assigned ASTOUND BROADBAND, LLC - CA 485E SCRM NORTH CA
2017-09-26 916-831-1XXX 1000–1999Assigned ASTOUND BROADBAND, LLC - CA 485E ELK GROVE CA
2017-09-22 916-301-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RSVL CTHT CA
2017-09-22 916-368-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SCRM MAIN CA
2017-09-21 916-306-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM MAIN CA
2017-09-21 916-306-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM MAIN CA
2017-09-21 916-306-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM MAIN CA
2017-09-21 916-461-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E FOLSOM CA
2017-09-21 916-619-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM MAIN CA
2017-09-15 916-975-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SO PLACER CA
2017-09-13 916-345-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM NORTH CA
2017-09-07 916-306-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 SCRM MAIN CA
2017-09-05 916-918-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L RSVL MAIN CA
2017-08-22 916-767-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SCRM MAIN CA
2017-08-22 916-767-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SCRM MAIN CA
2017-08-22 916-767-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SCRM MAIN CA
2017-08-22 916-926-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SCRM MAIN CA
2017-08-22 916-926-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SCRM MAIN CA
2017-08-22 916-926-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SCRM MAIN CA
2017-08-22 916-926-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SCRM MAIN CA
2017-08-17 916-345-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C SCRM NORTH CA
2017-08-15 916-269-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C RIO LINDA CA
2017-08-15 916-302-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C PLEASATGRV CA
2017-08-15 916-884-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C LINCOLN CA
2017-08-15 916-963-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C FAIR OAKS CA
2017-08-14 916-260-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 FOLSOM CA
2017-08-14 916-831-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ELK GROVE CA
2017-08-14 916-884-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LINCOLN CA
2017-08-14 916-953-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RSVL MAIN CA
2017-08-14 916-953-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 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.