NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

2 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, 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
2005-06-01 619-245-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 NATIONALCY CA
2005-06-01 619-410-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CHULAVISTA CA
2005-05-31 619-321-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SNDG SNDG CA
2005-05-31 619-321-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SNDG SNDG CA
2005-05-27 619-353-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C JACUMBA CA
2005-05-27 619-415-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C LA MESA CA
2005-05-26 619-397-1XXX 1000–1999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L CHULAVISTA CA
2005-05-26 619-938-3XXX 3000–3999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L EL CAJON CA
2005-05-20 619-618-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 SNDG SNDG CA
2005-05-20 619-618-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 SNDG SNDG CA
2005-05-20 619-793-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 SNDG SNDG CA
2005-05-20 619-793-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C SNDG SNDG CA
2005-05-13 619-956-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 EL CAJON CA
2005-05-12 619-377-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C PINEVALLEY CA
2005-05-12 619-415-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LA MESA CA
2005-05-12 619-573-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNDG SNDG CA
2005-05-12 619-573-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNDG SNDG CA
2005-05-12 619-573-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNDG SNDG CA
2005-05-09 619-358-9XXX 9000–9999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SNDG SNDG CA
2005-05-09 619-546-8XXX 8000–8999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SNDG SNDG CA
2005-05-05 619-587-5XXX 5000–5999Assigned METROPCS, INC. 5562 CHULAVISTA CA
2005-05-05 619-587-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CHULAVISTA CA
2005-05-03 619-573-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SNDG SNDG CA
2005-04-28 619-791-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 NATIONALCY CA
2005-04-21 619-273-9XXX 9000–9999Assigned METROPCS, INC. 5562 NATIONALCY CA
2005-04-21 619-587-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CHULAVISTA CA
2005-04-21 619-587-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CHULAVISTA CA
2005-04-15 619-587-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHULAVISTA CA
2005-04-15 619-587-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CHULAVISTA CA
2005-04-14 619-414-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LA MESA CA
2005-04-12 619-768-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 EL CAJON CA
2005-04-06 619-399-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 NATIONALCY CA
2005-04-06 619-399-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 NATIONALCY CA
2005-04-01 619-319-3XXX 3000–3999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L CORONADO CA
2005-04-01 619-567-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LA MESA CA
2005-04-01 619-567-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LA MESA CA
2005-04-01 619-793-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SNDG SNDG CA
2005-04-01 619-793-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SNDG SNDG CA
2005-04-01 619-793-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SNDG SNDG CA
2005-03-25 619-519-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CORONADO CA
2005-03-23 619-573-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNDG SNDG CA
2005-03-23 619-573-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNDG SNDG CA
2005-03-23 619-587-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CHULAVISTA CA
2005-03-23 619-587-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CHULAVISTA CA
2005-03-23 619-587-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CHULAVISTA CA
2005-03-23 619-587-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CHULAVISTA CA
2005-03-08 619-205-9XXX 9000–9999Assigned METROPCS, INC. 5562 CHULAVISTA CA
2005-03-08 619-864-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CHULAVISTA CA
2005-03-08 619-873-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 EL CAJON CA
2005-03-08 619-937-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 EL CAJON 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.