NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

9 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 909
ONVOY, LLC - CA 6
PEERLESS NETWORK OF CALIFORNIA, LLC - CA 2
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
2004-10-07 909-380-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 S BERNDINO CA
2004-10-07 909-631-1XXX 1000–1999Assigned METROPCS NETWORKS, LLC 899D CHINO CA
2004-10-05 909-282-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 POMONA CA
2004-10-05 909-525-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 POMONA CA
2004-10-05 909-630-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 POMONA CA
2004-09-29 909-282-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 POMONA CA
2004-09-23 909-380-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 S BERNDINO CA
2004-09-23 909-438-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CHINO CA
2004-09-23 909-438-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CHINO CA
2004-09-16 909-740-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ONTARIO CA
2004-09-15 909-382-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 S BERNDINO CA
2004-09-15 909-384-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 S BERNDINO CA
2004-09-15 909-740-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ONTARIO CA
2004-09-15 909-740-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ONTARIO CA
2004-09-14 909-581-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 UPLAND CA
2004-09-14 909-728-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 FONTANA CA
2004-09-14 909-919-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 UPLAND CA
2004-09-10 909-459-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ONTARIO CA
2004-09-10 909-605-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ONTARIO CA
2004-09-10 909-635-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ONTARIO CA
2004-09-10 909-635-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ONTARIO CA
2004-09-10 909-635-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ONTARIO CA
2004-09-10 909-635-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ONTARIO CA
2004-09-10 909-635-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ONTARIO CA
2004-09-10 909-706-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 POMONA CA
2004-09-10 909-706-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 POMONA CA
2004-09-10 909-744-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ARROWHEAD CA
2004-09-10 909-802-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 POMONA CA
2004-09-10 909-868-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 POMONA CA
2004-09-08 909-478-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 REDLANDS CA
2004-09-08 909-581-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 UPLAND CA
2004-09-08 909-728-6XXX 6000–6999Assigned METROPCS NETWORKS, LLC 899D FONTANA CA
2004-09-07 909-498-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 COLTON CA
2004-09-07 909-758-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J UPLAND CA
2004-08-31 909-498-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C COLTON CA
2004-08-31 909-569-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 DIAMONDBAR CA
2004-08-31 909-569-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 DIAMONDBAR CA
2004-08-23 909-646-7XXX 7000–7999Assigned FRONTIER CALIFORNIA INC. 2319 ETIWANDA CA
2004-08-23 909-663-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 S BERNDINO CA
2004-08-23 909-967-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 POMONA CA
2004-08-20 909-740-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ONTARIO CA
2004-08-19 909-646-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ETIWANDA CA
2004-08-16 909-804-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 MARSHALL CA
2004-08-13 909-573-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CHINO CA
2004-08-13 909-573-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CHINO CA
2004-08-12 909-266-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 S BERNDINO CA
2004-08-12 909-266-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 S BERNDINO CA
2004-08-12 909-771-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 S BERNDINO CA
2004-08-12 909-806-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 S BERNDINO CA
2004-08-10 909-579-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 UPLAND 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.