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
2008-01-23 619-569-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EL CAJON CA
2008-01-23 619-569-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EL CAJON CA
2008-01-22 619-202-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 JACUMBA CA
2008-01-21 619-567-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LA MESA CA
2008-01-15 619-592-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 EL CAJON CA
2008-01-15 619-592-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 EL CAJON CA
2008-01-10 619-456-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 EL CAJON CA
2008-01-04 619-450-7XXX 7000–7999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SNDG SNDG CA
2008-01-03 619-621-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CHULAVISTA CA
2007-12-21 619-209-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNDG SNDG CA
2007-12-21 619-450-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SNDG SNDG CA
2007-12-21 619-740-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LA MESA CA
2007-12-11 619-450-5XXX 5000–5999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SNDG SNDG CA
2007-12-07 619-942-7XXX 7000–7999Assigned METROPCS, INC. 5562 CHULAVISTA CA
2007-12-07 619-942-8XXX 8000–8999Assigned METROPCS, INC. 5562 CHULAVISTA CA
2007-12-06 619-609-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LA MESA CA
2007-11-27 619-824-8XXX 8000–8999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J CAMPO CA
2007-11-21 619-274-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 NATIONALCY CA
2007-11-21 619-450-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNDG SNDG CA
2007-11-21 619-942-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CHULAVISTA CA
2007-11-21 619-942-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CHULAVISTA CA
2007-11-21 619-942-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CHULAVISTA CA
2007-11-15 619-450-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 SNDG SNDG CA
2007-11-15 619-450-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 SNDG SNDG CA
2007-11-06 619-609-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LA MESA CA
2007-11-06 619-609-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LA MESA CA
2007-11-06 619-942-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CHULAVISTA CA
2007-11-06 619-942-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CHULAVISTA CA
2007-10-29 619-569-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 EL CAJON CA
2007-10-29 619-569-9XXX 9000–9999Assigned METROPCS, INC. 5562 EL CAJON CA
2007-10-26 619-894-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNDG SNDG CA
2007-10-26 619-894-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNDG SNDG CA
2007-10-22 619-419-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 NATIONALCY CA
2007-10-18 619-713-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J LA MESA CA
2007-10-18 619-906-6XXX 6000–6999Assigned METROPCS, INC. 5562 SNDG SNDG CA
2007-10-18 619-906-9XXX 9000–9999Assigned METROPCS, INC. 5562 SNDG SNDG CA
2007-10-18 619-913-6XXX 6000–6999Assigned METROPCS, INC. 5562 SNDG SNDG CA
2007-10-17 619-785-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNDG SNDG CA
2007-10-08 619-453-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SNDG SNDG CA
2007-10-08 619-453-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SNDG SNDG CA
2007-10-08 619-453-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SNDG SNDG CA
2007-10-08 619-453-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SNDG SNDG CA
2007-10-08 619-481-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SNDG SNDG CA
2007-10-01 619-512-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 NATIONALCY CA
2007-09-27 619-209-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C SNDG SNDG CA
2007-09-27 619-438-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EL CAJON CA
2007-09-27 619-456-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EL CAJON CA
2007-09-27 619-456-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EL CAJON CA
2007-09-26 619-727-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNDG SNDG CA
2007-09-17 619-272-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C SNDG SNDG 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.