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
2003-12-29 619-770-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SNDG SNDG CA
2003-12-29 619-770-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SNDG SNDG CA
2003-12-25 619-631-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 EL CAJON CA
2003-12-18 619-212-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 EL CAJON CA
2003-12-17 619-765-7XXX 7000–7999Assigned METROPCS, INC. 5562 NATIONALCY CA
2003-12-17 619-789-2XXX 2000–2999Assigned METROPCS, INC. 5562 NATIONALCY CA
2003-12-17 619-789-3XXX 3000–3999Assigned METROPCS, INC. 5562 NATIONALCY CA
2003-12-17 619-789-7XXX 7000–7999Assigned METROPCS, INC. 5562 NATIONALCY CA
2003-12-17 619-789-8XXX 8000–8999Assigned METROPCS, INC. 5562 NATIONALCY CA
2003-12-17 619-789-9XXX 9000–9999Assigned METROPCS, INC. 5562 NATIONALCY CA
2003-12-17 619-931-6XXX 6000–6999Assigned METROPCS, INC. 5562 NATIONALCY CA
2003-12-17 619-931-7XXX 7000–7999Assigned METROPCS, INC. 5562 NATIONALCY CA
2003-12-05 619-770-1XXX 1000–1999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SNDG SNDG CA
2003-11-25 619-946-7XXX 7000–7999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L CHULAVISTA CA
2003-11-21 619-213-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CHULAVISTA CA
2003-11-17 619-929-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNDG SNDG CA
2003-11-17 619-952-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNDG SNDG CA
2003-11-17 619-952-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNDG SNDG CA
2003-11-17 619-952-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNDG SNDG CA
2003-11-17 619-952-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNDG SNDG CA
2003-11-17 619-952-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNDG SNDG CA
2003-11-17 619-952-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNDG SNDG CA
2003-11-17 619-952-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNDG SNDG CA
2003-11-17 619-952-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNDG SNDG CA
2003-11-17 619-952-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNDG SNDG CA
2003-11-14 619-365-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CORONADO CA
2003-11-14 619-599-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 EL CAJON CA
2003-11-14 619-599-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 EL CAJON CA
2003-11-14 619-864-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CHULAVISTA CA
2003-11-14 619-864-6XXX 6000–6999Assigned METROPCS, INC. 5562 CHULAVISTA CA
2003-11-14 619-864-8XXX 8000–8999Assigned METROPCS, INC. 5562 CHULAVISTA CA
2003-11-14 619-864-9XXX 9000–9999Assigned METROPCS, INC. 5562 CHULAVISTA CA
2003-11-14 619-941-4XXX 4000–4999Assigned METROPCS, INC. 5562 CHULAVISTA CA
2003-11-14 619-941-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CHULAVISTA CA
2003-11-14 619-941-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CHULAVISTA CA
2003-11-14 619-941-8XXX 8000–8999Assigned METROPCS, INC. 5562 CHULAVISTA CA
2003-11-14 619-941-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHULAVISTA CA
2003-11-06 619-546-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SNDG SNDG CA
2003-10-27 619-414-2XXX 2000–2999Assigned METROPCS, INC. 5562 LA MESA CA
2003-10-27 619-414-3XXX 3000–3999Assigned METROPCS, INC. 5562 LA MESA CA
2003-10-27 619-438-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 EL CAJON CA
2003-10-27 619-438-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 EL CAJON CA
2003-10-27 619-438-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 EL CAJON CA
2003-10-27 619-438-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 EL CAJON CA
2003-10-27 619-438-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 EL CAJON CA
2003-10-27 619-841-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CORONADO CA
2003-10-27 619-841-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CORONADO CA
2003-10-27 619-841-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CORONADO CA
2003-10-20 619-273-6XXX 6000–6999Assigned METROPCS, INC. 5562 NATIONALCY CA
2003-10-20 619-273-7XXX 7000–7999Assigned METROPCS, INC. 5562 NATIONALCY 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.