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
2019-02-06 916-269-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E RIO LINDA CA
2019-02-04 916-536-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E FAIR OAKS CA
2019-02-04 916-545-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E FAIR OAKS CA
2019-02-04 916-864-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E FAIR OAKS CA
2019-01-30 916-269-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C RIO LINDA CA
2019-01-30 916-269-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C RIO LINDA CA
2019-01-30 916-269-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C RIO LINDA CA
2019-01-30 916-269-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C RIO LINDA CA
2019-01-30 916-312-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C MICHIGNBAR CA
2019-01-30 916-354-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C MICHIGNBAR CA
2019-01-23 916-309-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM MAIN CA
2019-01-23 916-309-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C SCRM MAIN CA
2019-01-23 916-309-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C SCRM MAIN CA
2019-01-23 916-309-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C SCRM MAIN CA
2019-01-23 916-360-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM MAIN CA
2019-01-23 916-857-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM MAIN CA
2019-01-23 916-857-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM MAIN CA
2019-01-23 916-857-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM MAIN CA
2019-01-23 916-857-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SCRM MAIN CA
2019-01-17 916-360-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 SCRM MAIN CA
2019-01-17 916-360-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SCRM MAIN CA
2019-01-14 916-516-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SCRM MAIN CA
2019-01-14 916-516-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SCRM MAIN CA
2019-01-14 916-516-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SCRM MAIN CA
2019-01-14 916-516-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SCRM MAIN CA
2019-01-14 916-516-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SCRM MAIN CA
2019-01-14 916-516-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SCRM MAIN CA
2018-12-13 916-518-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SCRM NORTH CA
2018-11-21 916-301-4XXX 4000–4999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F RSVL CTHT CA
2018-11-21 916-378-8XXX 8000–8999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F MEADOWVIEW CA
2018-11-13 916-518-0XXX 0000–0999Assigned VONAGE AMERICA LLC 197D SCRM NORTH CA
2018-11-13 916-518-1XXX 1000–1999Assigned VONAGE AMERICA LLC 197D SCRM NORTH CA
2018-11-13 916-518-7XXX 7000–7999Assigned VONAGE AMERICA LLC 197D SCRM NORTH CA
2018-11-13 916-518-8XXX 8000–8999Assigned VONAGE AMERICA LLC 197D SCRM NORTH CA
2018-11-13 916-518-9XXX 9000–9999Assigned VONAGE AMERICA LLC 197D SCRM NORTH CA
2018-11-13 916-565-9XXX 9000–9999Assigned VONAGE AMERICA LLC 197D SCRM NORTH CA
2018-11-13 916-679-9XXX 9000–9999Assigned VONAGE AMERICA LLC 197D SCRM NORTH CA
2018-10-26 916-518-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 SCRM NORTH CA
2018-10-19 916-831-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ELK GROVE CA
2018-10-18 916-794-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F MICHIGNBAR CA
2018-10-17 916-378-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MEADOWVIEW CA
2018-10-04 916-770-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 RSVL MAIN CA
2018-10-01 916-536-7XXX 7000–7999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F FAIR OAKS CA
2018-09-28 916-755-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 RSVL MAIN CA
2018-09-25 916-776-8XXX 8000–8999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F WALNUT GRV CA
2018-09-24 916-269-3XXX 3000–3999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F RIO LINDA CA
2018-09-24 916-516-1XXX 1000–1999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SCRM MAIN CA
2018-09-24 916-892-1XXX 1000–1999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F ELK GROVE CA
2018-09-24 916-975-6XXX 6000–6999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SO PLACER CA
2018-09-04 916-309-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L 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.