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 562
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 1
BANDWIDTH.COM CLEC, LLC - 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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2004-05-13 562-310-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LONG BEACH CA
2004-05-11 562-217-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LA HABRA CA
2004-05-11 562-217-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LA HABRA CA
2004-04-28 562-396-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 DOWNEY CA
2004-04-28 562-556-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 WHITTIER CA
2004-04-09 562-216-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LONG BEACH CA
2004-04-09 562-277-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LONG BEACH CA
2004-04-09 562-277-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LONG BEACH CA
2004-04-09 562-277-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LONG BEACH CA
2004-04-09 562-277-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LONG BEACH CA
2004-04-07 562-252-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ALAMITOS CA
2004-04-07 562-322-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 WHITTIER CA
2004-04-07 562-483-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 NORWALK CA
2004-04-07 562-774-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 DOWNEY CA
2004-04-01 562-315-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 LA HABRA CA
2004-03-29 562-676-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LONG BEACH CA
2004-03-29 562-676-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LONG BEACH CA
2004-03-29 562-676-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LONG BEACH CA
2004-03-17 562-222-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 PICORIVERA CA
2004-02-11 562-257-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LONG BEACH CA
2004-02-11 562-257-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LONG BEACH CA
2004-02-11 562-304-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LONG BEACH CA
2004-01-23 562-205-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PICORIVERA CA
2003-12-31 562-599-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LONG BEACH CA
2003-12-31 562-607-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LONG BEACH CA
2003-12-30 562-250-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 DOWNEY CA
2003-12-30 562-261-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 DOWNEY CA
2003-12-30 562-261-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 DOWNEY CA
2003-12-25 562-842-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 PICORIVERA CA
2003-12-15 562-237-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LA HABRA CA
2003-12-15 562-237-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LA HABRA CA
2003-12-15 562-237-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LA HABRA CA
2003-12-15 562-237-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LA HABRA CA
2003-12-15 562-237-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LA HABRA CA
2003-11-14 562-276-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LONG BEACH CA
2003-11-14 562-489-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LONG BEACH CA
2003-11-14 562-733-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LONG BEACH CA
2003-11-14 562-733-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LONG BEACH CA
2003-10-31 562-261-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 DOWNEY CA
2003-10-27 562-213-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 LAKEWOOD CA
2003-10-27 562-228-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 NORWALK CA
2003-10-27 562-228-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 NORWALK CA
2003-10-27 562-228-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 NORWALK CA
2003-09-23 562-261-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 DOWNEY CA
2003-09-23 562-261-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 DOWNEY CA
2003-09-17 562-279-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LONG BEACH CA
2003-09-17 562-279-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LONG BEACH CA
2003-09-17 562-279-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LONG BEACH CA
2003-09-17 562-366-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LONG BEACH CA
2003-09-17 562-376-7XXX 7000–7999Assigned METROPCS NETWORKS, LLC 899D NORWALK 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.