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
2007-09-17 619-905-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 EL CAJON CA
2007-09-14 619-453-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 SNDG SNDG CA
2007-09-14 619-453-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SNDG SNDG CA
2007-09-14 619-453-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SNDG SNDG CA
2007-09-14 619-453-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SNDG SNDG CA
2007-09-14 619-453-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SNDG SNDG CA
2007-09-13 619-677-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SNDG SNDG CA
2007-09-13 619-727-7XXX 7000–7999Assigned METROPCS, INC. 5562 SNDG SNDG CA
2007-09-13 619-727-8XXX 8000–8999Assigned METROPCS, INC. 5562 SNDG SNDG CA
2007-09-13 619-727-9XXX 9000–9999Assigned METROPCS, INC. 5562 SNDG SNDG CA
2007-09-13 619-866-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNDG SNDG CA
2007-09-11 619-456-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L EL CAJON CA
2007-09-11 619-713-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L LA MESA CA
2007-09-05 619-906-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SNDG SNDG CA
2007-09-05 619-906-5XXX 5000–5999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SNDG SNDG CA
2007-08-29 619-677-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNDG SNDG CA
2007-08-29 619-677-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNDG SNDG CA
2007-08-22 619-713-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LA MESA CA
2007-08-21 619-942-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CHULAVISTA CA
2007-08-21 619-942-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CHULAVISTA CA
2007-08-21 619-942-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CHULAVISTA CA
2007-08-15 619-651-1XXX 1000–1999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L CHULAVISTA CA
2007-08-15 619-746-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L CHULAVISTA CA
2007-08-10 619-415-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LA MESA CA
2007-08-10 619-772-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LA MESA CA
2007-08-08 619-209-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J SNDG SNDG CA
2007-08-08 619-684-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K SNDG SNDG CA
2007-08-07 619-550-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C SNDG SNDG CA
2007-08-06 619-639-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LA MESA CA
2007-07-31 619-534-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SNDG SNDG CA
2007-07-31 619-534-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SNDG SNDG CA
2007-07-23 619-537-1XXX 1000–1999Assigned PACIFIC BELL 9740 CORONADO CA
2007-07-23 619-537-2XXX 2000–2999Assigned PACIFIC BELL 9740 CORONADO CA
2007-07-23 619-537-3XXX 3000–3999Assigned PACIFIC BELL 9740 CORONADO CA
2007-07-23 619-537-4XXX 4000–4999Assigned PACIFIC BELL 9740 CORONADO CA
2007-07-23 619-537-5XXX 5000–5999Assigned PACIFIC BELL 9740 CORONADO CA
2007-07-19 619-456-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 EL CAJON CA
2007-07-19 619-456-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EL CAJON CA
2007-07-19 619-456-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EL CAJON CA
2007-07-17 619-502-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CHULAVISTA CA
2007-07-17 619-502-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J CHULAVISTA CA
2007-07-16 619-534-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SNDG SNDG CA
2007-07-16 619-609-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 LA MESA CA
2007-06-29 619-259-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 NATIONALCY CA
2007-06-29 619-677-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SNDG SNDG CA
2007-06-29 619-677-3XXX 3000–3999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SNDG SNDG CA
2007-06-21 619-240-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J CHULAVISTA CA
2007-06-21 619-862-3XXX 3000–3999Assigned METROPCS, INC. 5562 CHULAVISTA CA
2007-06-21 619-862-4XXX 4000–4999Assigned METROPCS, INC. 5562 CHULAVISTA CA
2007-06-21 619-862-5XXX 5000–5999Assigned METROPCS, INC. 5562 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.