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 909
ONVOY, LLC - 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
2014-05-28 909-375-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BIGBEAR CY CA
2014-05-28 909-487-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CRESTLINE CA
2014-05-20 909-493-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E UPLAND CA
2014-05-20 909-493-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E UPLAND CA
2014-05-20 909-493-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E UPLAND CA
2014-05-12 909-301-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E RIALTO CA
2014-05-12 909-301-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E RIALTO CA
2014-05-12 909-341-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E RIALTO CA
2014-05-07 909-493-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 UPLAND CA
2014-05-07 909-493-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 UPLAND CA
2014-05-05 909-493-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K UPLAND CA
2014-05-02 909-326-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K POMONA CA
2014-05-01 909-328-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 REDLANDS CA
2014-05-01 909-906-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ONTARIO CA
2014-04-28 909-441-7XXX 7000–7999Assigned TWC IP ENABLED SERVICES, LLC 793K FONTANA CA
2014-04-23 909-441-3XXX 3000–3999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J FONTANA CA
2014-04-23 909-493-3XXX 3000–3999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J UPLAND CA
2014-04-23 909-906-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ONTARIO CA
2014-04-23 909-906-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ONTARIO CA
2014-04-23 909-906-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ONTARIO CA
2014-04-16 909-441-8XXX 8000–8999Assigned METROPCS NETWORKS, LLC 899D FONTANA CA
2014-04-16 909-493-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 UPLAND CA
2014-04-14 909-493-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 UPLAND CA
2014-04-11 909-326-4XXX 4000–4999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J POMONA CA
2014-04-08 909-929-8XXX 8000–8999Assigned TWC IP ENABLED SERVICES, LLC 793K CLAREMONT CA
2014-04-07 909-767-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 UPLAND CA
2014-04-01 909-325-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CHINO CA
2014-04-01 909-344-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CLAREMONT CA
2014-04-01 909-378-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DIAMONDBAR CA
2014-04-01 909-441-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 FONTANA CA
2014-04-01 909-441-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 FONTANA CA
2014-04-01 909-441-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 FONTANA CA
2014-03-31 909-990-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K RIALTO CA
2014-03-25 909-325-2XXX 2000–2999Assigned TWC IP ENABLED SERVICES, LLC 793K CHINO CA
2014-03-25 909-485-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K ARROWHEAD CA
2014-03-25 909-485-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ARROWHEAD CA
2014-03-25 909-485-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ARROWHEAD CA
2014-03-24 909-441-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 FONTANA CA
2014-03-18 909-906-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J ONTARIO CA
2014-03-17 909-351-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MENTONE CA
2014-03-17 909-906-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ONTARIO CA
2014-03-14 909-325-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHINO CA
2014-03-07 909-906-2XXX 2000–2999Assigned TWC IP ENABLED SERVICES, LLC 793K ONTARIO CA
2014-03-05 909-371-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FONTANA CA
2014-03-04 909-325-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 CHINO CA
2014-03-04 909-758-7XXX 7000–7999Assigned TWC IP ENABLED SERVICES, LLC 793K UPLAND CA
2014-02-28 909-359-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E HIGHLAND CA
2014-02-28 909-359-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E HIGHLAND CA
2014-02-27 909-378-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 DIAMONDBAR CA
2014-02-25 909-929-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CLAREMONT 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.