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 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
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2006-10-09 562-745-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 DOWNEY CA
2006-10-03 562-303-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LAKEWOOD CA
2006-09-27 562-826-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ALAMITOS CA
2006-09-19 562-726-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K LONG BEACH CA
2006-09-18 562-382-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 DOWNEY CA
2006-09-15 562-343-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K ALAMITOS CA
2006-09-13 562-219-7XXX 7000–7999Assigned CHARTER IP ENABLED SERVICES, LLC 792K NORWALK CA
2006-09-13 562-324-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 WHITTIER CA
2006-09-13 562-376-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 NORWALK CA
2006-08-31 562-826-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ALAMITOS CA
2006-08-31 562-826-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ALAMITOS CA
2006-08-29 562-296-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K ALAMITOS CA
2006-08-18 562-324-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WHITTIER CA
2006-08-18 562-376-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 NORWALK CA
2006-08-18 562-457-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WHITTIER CA
2006-08-17 562-303-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 LAKEWOOD CA
2006-08-17 562-303-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 LAKEWOOD CA
2006-08-16 562-222-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PICORIVERA CA
2006-08-16 562-265-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LA HABRA CA
2006-08-10 562-392-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 DOWNEY CA
2006-08-10 562-392-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 DOWNEY CA
2006-08-10 562-536-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 WHITTIER CA
2006-07-26 562-319-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DOWNEY CA
2006-07-26 562-372-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DOWNEY CA
2006-07-21 562-296-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ALAMITOS CA
2006-07-19 562-606-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LONG BEACH CA
2006-07-19 562-606-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LONG BEACH CA
2006-07-19 562-606-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LONG BEACH CA
2006-07-14 562-656-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PICORIVERA CA
2006-07-13 562-315-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LA HABRA CA
2006-07-13 562-315-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LA HABRA CA
2006-07-13 562-745-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 DOWNEY CA
2006-07-13 562-745-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 DOWNEY CA
2006-07-07 562-606-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C LONG BEACH CA
2006-07-05 562-219-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 NORWALK CA
2006-07-05 562-606-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 LONG BEACH CA
2006-07-05 562-606-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 LONG BEACH CA
2006-07-03 562-343-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ALAMITOS CA
2006-07-03 562-343-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ALAMITOS CA
2006-07-03 562-606-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K LONG BEACH CA
2006-06-29 562-606-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LONG BEACH CA
2006-06-29 562-606-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LONG BEACH CA
2006-06-26 562-826-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ALAMITOS CA
2006-06-26 562-826-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ALAMITOS CA
2006-06-22 562-606-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LONG BEACH CA
2006-06-19 562-240-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ALAMITOS CA
2006-06-12 562-405-8XXX 8000–8999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 NORWALK CA
2006-06-12 562-452-5XXX 5000–5999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 LAKEWOOD CA
2006-06-12 562-576-7XXX 7000–7999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 PICORIVERA CA
2006-06-12 562-594-2XXX 2000–2999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 ALAMITOS 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.