NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

17 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 805
ONVOY, LLC - CA 14
TELNYX LLC 1
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
2005-04-01 805-624-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SIMIVALLEY CA
2005-04-01 805-624-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SIMIVALLEY CA
2005-03-31 805-904-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ARROYOGRND CA
2005-03-30 805-915-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SIMIVALLEY CA
2005-03-24 805-275-6XXX 6000–6999Assigned METROPCS NETWORKS, LLC 899D VNTRA CNTL CA
2005-03-22 805-918-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SATICOY CA
2005-03-22 805-918-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SATICOY CA
2005-03-14 805-268-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 SANTAMARIA CA
2005-03-11 805-504-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CAMARILLO CA
2005-03-11 805-504-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CAMARILLO CA
2005-03-08 805-205-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 OXNARD CA
2005-03-08 805-539-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ATASCADERO CA
2005-03-04 805-367-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 THOUSAOAKS CA
2005-03-03 805-258-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 VNTRA CNTL CA
2005-03-03 805-406-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SANTAMARIA CA
2005-03-03 805-982-0XXX 0000–0999Assigned METROPCS NETWORKS, LLC 899D OXNARD CA
2005-03-02 805-920-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C SOMIS CA
2005-02-28 805-856-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E VNTRA EAST CA
2005-02-24 805-212-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VNTRA EAST CA
2005-02-23 805-770-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SANBARBARA CA
2005-02-22 805-205-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 OXNARD CA
2005-02-22 805-205-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 OXNARD CA
2005-02-22 805-205-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 OXNARD CA
2005-02-22 805-760-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 OXNARD CA
2005-02-15 805-755-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CARPINTRIA CA
2005-02-14 805-223-9XXX 9000–9999Assigned METROPCS NETWORKS, LLC 899D VNTRA CNTL CA
2005-02-10 805-540-5XXX 5000–5999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 SNLUSOBSPO CA
2005-02-03 805-512-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 OXNARD CA
2005-02-02 805-804-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 VNTRA CNTL CA
2005-01-19 805-200-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 OXNARD CA
2005-01-19 805-201-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 OXNARD CA
2005-01-19 805-201-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 OXNARD CA
2005-01-14 805-409-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 THOUSAOAKS CA
2005-01-14 805-413-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 THOUSAOAKS CA
2005-01-14 805-512-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 OXNARD CA
2005-01-14 805-512-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C OXNARD CA
2005-01-14 805-512-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C OXNARD CA
2005-01-12 805-509-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 OXNARD CA
2005-01-12 805-509-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 OXNARD CA
2005-01-11 805-229-3XXX 3000–3999Assigned IP HORIZON LLC 515J SANTAPAULA CA
2005-01-11 805-229-4XXX 4000–4999Assigned IP HORIZON LLC 515J SANTAPAULA CA
2005-01-07 805-290-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 VNTRA EAST CA
2005-01-07 805-426-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C SIMIVALLEY CA
2005-01-04 805-240-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 OXNARD CA
2004-12-21 805-265-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C FILLMORE CA
2004-12-20 805-284-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SANBARBARA CA
2004-12-17 805-273-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 NEWBURYPRK CA
2004-12-17 805-322-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CAMARILLO CA
2004-12-17 805-322-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CAMARILLO CA
2004-12-17 805-351-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 EL RIO 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.