NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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
2020-09-21 916-898-7XXX 7000–7999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SCRM MAIN CA
2020-09-21 916-898-8XXX 8000–8999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SCRM MAIN CA
2020-09-20 916-829-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L ELK GROVE CA
2020-09-20 916-829-3XXX 3000–3999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L ELK GROVE CA
2020-09-20 916-829-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L ELK GROVE CA
2020-09-20 916-829-5XXX 5000–5999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L ELK GROVE CA
2020-09-19 916-270-1XXX 1000–1999Assigned TELNYX LLC 073H WALNUT GRV CA
2020-09-19 916-510-1XXX 1000–1999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L FOLSOM CA
2020-09-19 916-510-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L FOLSOM CA
2020-09-19 916-510-3XXX 3000–3999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L FOLSOM CA
2020-09-18 916-886-8XXX 8000–8999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L RSVL MAIN CA
2020-09-18 916-918-1XXX 1000–1999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L RSVL MAIN CA
2020-09-16 916-530-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SCRM MAIN CA
2020-09-16 916-858-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SCRM MAIN CA
2020-09-14 916-530-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C SCRM MAIN CA
2020-09-14 916-530-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C SCRM MAIN CA
2020-09-14 916-530-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C SCRM MAIN CA
2020-09-14 916-530-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C SCRM MAIN CA
2020-09-14 916-530-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C SCRM MAIN CA
2020-09-09 916-776-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 WALNUT GRV CA
2020-09-09 916-776-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 WALNUT GRV CA
2020-09-03 916-530-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SCRM MAIN CA
2020-09-03 916-530-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SCRM MAIN CA
2020-09-01 916-820-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SCRM MAIN CA
2020-09-01 916-820-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 SCRM MAIN CA
2020-08-27 916-237-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 RIO LINDA CA
2020-08-27 916-915-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 RIO LINDA CA
2020-08-25 916-510-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 FOLSOM CA
2020-08-25 916-820-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SCRM MAIN CA
2020-08-25 916-820-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SCRM MAIN CA
2020-08-25 916-820-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SCRM MAIN CA
2020-08-25 916-820-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SCRM MAIN CA
2020-08-25 916-820-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SCRM MAIN CA
2020-08-25 916-820-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SCRM MAIN CA
2020-08-25 916-820-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SCRM MAIN CA
2020-08-25 916-820-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SCRM MAIN CA
2020-08-20 916-699-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 RSVL MAIN CA
2020-08-13 916-829-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ELK GROVE CA
2020-08-12 916-699-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 RSVL MAIN CA
2020-08-12 916-860-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FAIR OAKS CA
2020-07-28 916-915-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F RIO LINDA CA
2020-07-24 916-602-5XXX 5000–5999Assigned METROPCS, INC. 5562 ELK GROVE CA
2020-06-30 916-777-1XXX 1000–1999Assigned FRACTEL, LLC 965H ISLETON CA
2020-06-30 916-777-8XXX 8000–8999Assigned FRACTEL, LLC 965H ISLETON CA
2020-06-26 916-866-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E FAIR OAKS CA
2020-06-22 916-659-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H SO PLACER CA
2020-06-22 916-659-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H SO PLACER CA
2020-06-22 916-659-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H SO PLACER CA
2020-06-17 916-450-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H SCRM MAIN CA
2020-06-09 916-237-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C RIO LINDA CA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.