NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

2 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, last 30 days — NPA 619
NEW CINGULAR WIRELESS PCS, LLC 1
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 1
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
2020-03-18 619-617-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CHULAVISTA CA
2020-03-18 619-617-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CHULAVISTA CA
2020-03-10 619-877-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNDG MRMS CA
2020-03-05 619-705-2XXX 2000–2999Assigned CSC WIRELESS, LLC 425J SNDG SNDG CA
2020-02-13 619-856-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 NATIONALCY CA
2020-02-13 619-856-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 NATIONALCY CA
2020-02-10 619-509-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EL CAJON CA
2020-02-10 619-603-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F NATIONALCY CA
2020-02-10 619-613-2XXX 2000–2999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LA MESA CA
2020-02-06 619-383-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EL CAJON CA
2020-02-06 619-617-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CHULAVISTA CA
2020-02-06 619-617-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CHULAVISTA CA
2020-02-06 619-617-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CHULAVISTA CA
2020-02-06 619-617-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CHULAVISTA CA
2020-02-06 619-617-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CHULAVISTA CA
2020-02-06 619-617-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CHULAVISTA CA
2020-02-06 619-937-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EL CAJON CA
2020-02-06 619-966-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EL CAJON CA
2020-02-04 619-492-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C DULZURA CA
2020-02-04 619-826-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C DULZURA CA
2020-02-04 619-877-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C SNDG MRMS CA
2020-02-04 619-877-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C SNDG MRMS CA
2020-02-03 619-617-9XXX 9000–9999Assigned METROPCS, INC. 5562 CHULAVISTA CA
2020-01-25 619-614-9XXX 9000–9999Assigned METROPCS, INC. 5562 CHULAVISTA CA
2020-01-14 619-614-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C CHULAVISTA CA
2020-01-14 619-614-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C CHULAVISTA CA
2020-01-14 619-880-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C SNDG SNDG CA
2020-01-07 619-775-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CORONADO CA
2020-01-06 619-856-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 NATIONALCY CA
2019-12-18 619-605-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNDG LVTA CA
2019-12-17 619-510-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNDG SNDG CA
2019-12-17 619-614-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CHULAVISTA CA
2019-12-17 619-614-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CHULAVISTA CA
2019-12-17 619-614-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CHULAVISTA CA
2019-12-17 619-614-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CHULAVISTA CA
2019-12-17 619-614-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CHULAVISTA CA
2019-12-17 619-614-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CHULAVISTA CA
2019-12-17 619-614-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CHULAVISTA CA
2019-12-13 619-489-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CHULAVISTA CA
2019-12-05 619-856-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 NATIONALCY CA
2019-12-02 619-605-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNDG LVTA CA
2019-11-18 619-856-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F NATIONALCY CA
2019-11-13 619-499-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EL CAJON CA
2019-11-13 619-499-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EL CAJON CA
2019-11-13 619-499-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EL CAJON CA
2019-11-13 619-499-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EL CAJON CA
2019-11-13 619-499-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EL CAJON CA
2019-11-06 619-605-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SNDG LVTA CA
2019-11-06 619-605-8XXX 8000–8999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SNDG LVTA CA
2019-10-30 619-703-0XXX 0000–0999Assigned TELNYX LLC 073H CHULAVISTA 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.