NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

1 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 323
ONVOY, 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
2008-02-05 323-826-8XXX 8000–8999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 06 CA
2008-02-05 323-973-8XXX 8000–8999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 06 CA
2008-02-05 323-973-9XXX 9000–9999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 06 CA
2008-02-01 323-856-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LSAN DA 14 CA
2008-02-01 323-924-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LSAN DA 12 CA
2008-01-24 323-303-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 MONTEBELLO CA
2008-01-24 323-695-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MONTEBELLO CA
2008-01-21 323-289-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LSAN DA 12 CA
2008-01-16 323-406-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 LSAN DA 05 CA
2008-01-16 323-510-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 LSAN DA 05 CA
2008-01-16 323-795-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 LSAN DA 11 CA
2008-01-11 323-695-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MONTEBELLO CA
2008-01-11 323-889-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MONTEBELLO CA
2008-01-03 323-455-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K LSAN DA 09 CA
2008-01-03 323-455-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K LSAN DA 09 CA
2007-12-06 323-703-2XXX 2000–2999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 14 CA
2007-12-06 323-703-3XXX 3000–3999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 14 CA
2007-12-06 323-703-4XXX 4000–4999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 14 CA
2007-12-06 323-703-6XXX 6000–6999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 14 CA
2007-12-06 323-703-7XXX 7000–7999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 14 CA
2007-12-05 323-370-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J LSAN DA 13 CA
2007-12-03 323-703-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LSAN DA 14 CA
2007-11-28 323-448-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2007-11-28 323-448-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2007-11-28 323-448-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2007-11-28 323-903-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K LSAN DA 12 CA
2007-11-21 323-282-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LSAN DA 06 CA
2007-11-21 323-315-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LSAN DA 02 CA
2007-11-21 323-405-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LSAN DA 04 CA
2007-11-21 323-795-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LSAN DA 11 CA
2007-11-21 323-900-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LSAN DA 13 CA
2007-11-14 323-537-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K LSAN DA 06 CA
2007-11-14 323-537-8XXX 8000–8999Assigned TWC IP ENABLED SERVICES, LLC 793K LSAN DA 06 CA
2007-11-09 323-303-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MONTEBELLO CA
2007-11-09 323-636-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LSAN DA 06 CA
2007-11-09 323-636-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LSAN DA 06 CA
2007-10-30 323-706-0XXX 0000–0999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 14 CA
2007-10-30 323-706-1XXX 1000–1999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 14 CA
2007-10-30 323-706-2XXX 2000–2999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 14 CA
2007-10-30 323-706-3XXX 3000–3999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 14 CA
2007-10-30 323-706-4XXX 4000–4999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 14 CA
2007-10-30 323-706-5XXX 5000–5999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 14 CA
2007-10-30 323-706-6XXX 6000–6999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 14 CA
2007-10-30 323-706-7XXX 7000–7999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 14 CA
2007-10-30 323-706-8XXX 8000–8999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 14 CA
2007-10-30 323-706-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LSAN DA 14 CA
2007-10-30 323-710-0XXX 0000–0999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 14 CA
2007-10-30 323-710-1XXX 1000–1999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 14 CA
2007-10-30 323-710-2XXX 2000–2999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 14 CA
2007-10-30 323-710-3XXX 3000–3999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 14 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.