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
2003-08-21 619-929-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNDG SNDG CA
2003-08-21 619-929-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNDG SNDG CA
2003-08-21 619-929-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNDG SNDG CA
2003-08-21 619-929-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNDG SNDG CA
2003-08-21 619-929-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNDG SNDG CA
2003-08-21 619-929-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNDG SNDG CA
2003-08-21 619-929-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNDG SNDG CA
2003-08-14 619-328-0XXX 0000–0999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L EL CAJON CA
2003-08-14 619-795-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SNDG SNDG CA
2003-08-14 619-795-5XXX 5000–5999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SNDG SNDG CA
2003-08-14 619-941-1XXX 1000–1999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L CHULAVISTA CA
2003-08-14 619-941-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L CHULAVISTA CA
2003-08-06 619-864-2XXX 2000–2999Assigned METROPCS, INC. 5562 CHULAVISTA CA
2003-08-06 619-864-3XXX 3000–3999Assigned METROPCS, INC. 5562 CHULAVISTA CA
2003-08-06 619-864-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CHULAVISTA CA
2003-08-04 619-341-5XXX 5000–5999Assigned METROPCS, INC. 5562 SNDG SNDG CA
2003-08-04 619-341-6XXX 6000–6999Assigned METROPCS, INC. 5562 SNDG SNDG CA
2003-08-04 619-341-7XXX 7000–7999Assigned METROPCS, INC. 5562 SNDG SNDG CA
2003-08-04 619-341-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SNDG SNDG CA
2003-08-04 619-434-7XXX 7000–7999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L NATIONALCY CA
2003-07-08 619-228-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNDG SNDG CA
2003-07-08 619-228-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNDG SNDG CA
2003-07-08 619-228-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNDG SNDG CA
2003-07-08 619-228-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNDG SNDG CA
2003-07-08 619-271-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L CHULAVISTA CA
2003-07-08 619-309-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNDG SNDG CA
2003-07-08 619-309-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNDG SNDG CA
2003-07-08 619-741-8XXX 8000–8999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L LA MESA CA
2003-07-01 619-739-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CHULAVISTA CA
2003-07-01 619-739-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CHULAVISTA CA
2003-07-01 619-739-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CHULAVISTA CA
2003-06-16 619-312-3XXX 3000–3999Assigned METROPCS, INC. 5562 EL CAJON CA
2003-06-16 619-312-8XXX 8000–8999Assigned METROPCS, INC. 5562 EL CAJON CA
2003-06-16 619-312-9XXX 9000–9999Assigned METROPCS, INC. 5562 EL CAJON CA
2003-06-12 619-546-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SNDG SNDG CA
2003-06-12 619-546-9XXX 9000–9999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SNDG SNDG CA
2003-05-28 619-554-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CORONADO CA
2003-05-28 619-554-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CORONADO CA
2003-05-28 619-739-5XXX 5000–5999Assigned METROPCS, INC. 5562 CHULAVISTA CA
2003-05-28 619-739-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHULAVISTA CA
2003-05-28 619-739-7XXX 7000–7999Assigned METROPCS, INC. 5562 CHULAVISTA CA
2003-05-28 619-739-8XXX 8000–8999Assigned METROPCS, INC. 5562 CHULAVISTA CA
2003-05-27 619-312-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EL CAJON CA
2003-05-27 619-312-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EL CAJON CA
2003-05-06 619-271-5XXX 5000–5999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L CHULAVISTA CA
2003-05-06 619-795-8XXX 8000–8999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SNDG SNDG CA
2003-04-04 619-307-4XXX 4000–4999Assigned METROPCS, INC. 5562 SNDG SNDG CA
2003-04-04 619-307-5XXX 5000–5999Assigned METROPCS, INC. 5562 SNDG SNDG CA
2003-04-04 619-307-6XXX 6000–6999Assigned METROPCS, INC. 5562 SNDG SNDG CA
2003-04-04 619-307-7XXX 7000–7999Assigned METROPCS, INC. 5562 SNDG SNDG 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.