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
2018-08-29 916-252-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C PLEASATGRV CA
2018-08-29 916-269-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C RIO LINDA CA
2018-08-29 916-269-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C RIO LINDA CA
2018-08-29 916-314-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C MICHIGNBAR CA
2018-08-29 916-702-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C PLEASATGRV CA
2018-08-17 916-516-7XXX 7000–7999Assigned METROPCS, INC. 5562 SCRM MAIN CA
2018-08-17 916-516-8XXX 8000–8999Assigned METROPCS, INC. 5562 SCRM MAIN CA
2018-08-17 916-516-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SCRM MAIN CA
2018-08-02 916-755-6XXX 6000–6999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F RSVL MAIN CA
2018-07-18 916-306-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SCRM MAIN CA
2018-07-18 916-306-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SCRM MAIN CA
2018-07-18 916-306-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SCRM MAIN CA
2018-07-18 916-306-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SCRM MAIN CA
2018-07-18 916-368-6XXX 6000–6999Assigned METROPCS, INC. 5562 SCRM MAIN CA
2018-07-12 916-413-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FOLSOM CA
2018-07-09 916-892-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ELK GROVE CA
2018-07-03 916-526-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C FAIR OAKS CA
2018-06-22 916-301-8XXX 8000–8999Assigned METROPCS, INC. 5562 RSVL CTHT CA
2018-06-22 916-301-9XXX 9000–9999Assigned METROPCS, INC. 5562 RSVL CTHT CA
2018-06-22 916-892-7XXX 7000–7999Assigned METROPCS, INC. 5562 ELK GROVE CA
2018-06-22 916-892-8XXX 8000–8999Assigned METROPCS, INC. 5562 ELK GROVE CA
2018-05-11 916-963-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FAIR OAKS CA
2018-05-03 916-406-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 RSVL MAIN CA
2018-05-03 916-406-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 RSVL MAIN CA
2018-05-03 916-918-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 RSVL MAIN CA
2018-04-13 916-354-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MICHIGNBAR CA
2018-04-09 916-406-6XXX 6000–6999Assigned METROPCS, INC. 5562 RSVL MAIN CA
2018-04-09 916-406-7XXX 7000–7999Assigned METROPCS, INC. 5562 RSVL MAIN CA
2018-04-09 916-406-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 RSVL MAIN CA
2018-04-09 916-406-9XXX 9000–9999Assigned METROPCS, INC. 5562 RSVL MAIN CA
2018-03-19 916-406-3XXX 3000–3999Assigned METROPCS, INC. 5562 RSVL MAIN CA
2018-03-19 916-886-4XXX 4000–4999Assigned METROPCS, INC. 5562 RSVL MAIN CA
2018-03-12 916-309-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SCRM MAIN CA
2018-02-27 916-945-4XXX 4000–4999Assigned METROPCS, INC. 5562 RSVL MAIN CA
2018-02-26 916-413-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FOLSOM CA
2018-02-26 916-413-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FOLSOM CA
2018-02-26 916-413-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FOLSOM CA
2018-02-20 916-406-0XXX 0000–0999Assigned CONSOLIDATED COMMUNICATIONS OF CALIFORNIA COMPANY 2334 RSVL MAIN CA
2018-02-20 916-406-1XXX 1000–1999Assigned CONSOLIDATED COMMUNICATIONS OF CALIFORNIA COMPANY 2334 RSVL MAIN CA
2018-02-20 916-406-2XXX 2000–2999Assigned CONSOLIDATED COMMUNICATIONS OF CALIFORNIA COMPANY 2334 RSVL MAIN CA
2018-02-16 916-309-7XXX 7000–7999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 SCRM MAIN CA
2018-01-25 916-309-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 SCRM MAIN CA
2018-01-10 916-413-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 FOLSOM CA
2018-01-09 916-892-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ELK GROVE CA
2017-12-22 916-884-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C LINCOLN CA
2017-12-14 916-831-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C ELK GROVE CA
2017-12-12 916-309-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7128 SCRM MAIN CA
2017-12-12 916-309-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7128 SCRM MAIN CA
2017-12-08 916-413-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 FOLSOM CA
2017-12-08 916-831-9XXX 9000–9999Assigned 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.