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
2005-09-08 909-538-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 POMONA CA
2005-09-06 909-348-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 DIAMONDBAR CA
2005-09-06 909-348-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 DIAMONDBAR CA
2005-09-06 909-573-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CHINO CA
2005-08-29 909-297-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 UPLAND CA
2005-08-26 909-539-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 CHINO CA
2005-08-26 909-647-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 HIGHLAND CA
2005-08-26 909-748-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 REDLANDS CA
2005-08-26 909-748-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 REDLANDS CA
2005-08-26 909-803-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ETIWANDA CA
2005-08-26 909-992-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 POMONA CA
2005-08-26 909-992-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 POMONA CA
2005-08-25 909-538-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 POMONA CA
2005-08-25 909-538-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 POMONA CA
2005-08-25 909-538-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 POMONA CA
2005-08-24 909-748-8XXX 8000–8999Assigned FRONTIER CALIFORNIA INC. 2319 REDLANDS CA
2005-08-23 909-543-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 RIALTO CA
2005-08-23 909-979-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 DIAMONDBAR CA
2005-08-18 909-801-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 REDLANDS CA
2005-08-18 909-801-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 REDLANDS CA
2005-08-18 909-912-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 UPLAND CA
2005-08-18 909-912-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 UPLAND CA
2005-08-18 909-912-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 UPLAND CA
2005-08-17 909-723-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 S BERNDINO CA
2005-08-17 909-723-6XXX 6000–6999Assigned METROPCS NETWORKS, LLC 899D S BERNDINO CA
2005-08-17 909-723-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 S BERNDINO CA
2005-08-17 909-993-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CHINO CA
2005-08-17 909-993-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CHINO CA
2005-08-16 909-503-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C COLTON CA
2005-08-16 909-746-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C RIALTO CA
2005-08-11 909-723-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 S BERNDINO CA
2005-08-11 909-723-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 S BERNDINO CA
2005-08-05 909-786-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ONTARIO CA
2005-08-05 909-786-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ONTARIO CA
2005-08-05 909-786-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ONTARIO CA
2005-08-05 909-786-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ONTARIO CA
2005-08-04 909-723-1XXX 1000–1999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J S BERNDINO CA
2005-08-03 909-446-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CALIMESA CA
2005-08-03 909-895-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 DIAMONDBAR CA
2005-07-29 909-538-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 POMONA CA
2005-07-29 909-538-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 POMONA CA
2005-07-27 909-435-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 REDLANDS CA
2005-07-27 909-786-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ONTARIO CA
2005-07-25 909-480-7XXX 7000–7999Assigned LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 7718 CLAREMONT CA
2005-07-21 909-583-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 REDLANDS CA
2005-07-21 909-803-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ETIWANDA CA
2005-07-19 909-744-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ARROWHEAD CA
2005-07-15 909-579-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 UPLAND CA
2005-07-13 909-954-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 COLTON CA
2005-07-13 909-954-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 COLTON 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.