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
2018-03-05 805-846-9XXX 9000–9999Assigned METROPCS NETWORKS, LLC 899D OXNARD CA
2018-03-02 805-980-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ARROYOGRND CA
2018-02-28 805-854-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 OXNARD CA
2018-02-20 805-515-1XXX 1000–1999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J VNTRA CNTL CA
2018-02-01 805-586-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CAMARILLO CA
2018-01-25 805-209-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MOORPARK CA
2018-01-23 805-514-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 FILLMORE CA
2018-01-23 805-718-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EL RIO CA
2018-01-23 805-867-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTAMARIA CA
2018-01-18 805-424-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SIMIVALLEY CA
2018-01-17 805-356-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 GUADALUPE CA
2018-01-16 805-742-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LOMPOC CA
2018-01-16 805-869-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SANBARBARA CA
2018-01-10 805-209-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MOORPARK CA
2018-01-02 805-514-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 FILLMORE CA
2017-12-22 805-281-1XXX 1000–1999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 SATICOY CA
2017-12-15 805-673-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SATICOY CA
2017-12-12 805-718-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 EL RIO CA
2017-12-12 805-808-5XXX 5000–5999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 CAMARILLO CA
2017-12-12 805-908-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 THOUSAOAKS CA
2017-12-08 805-413-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 THOUSAOAKS CA
2017-12-04 805-255-0XXX 0000–0999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 SANBARBARA CA
2017-12-04 805-255-1XXX 1000–1999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 SANBARBARA CA
2017-12-04 805-255-2XXX 2000–2999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 SANBARBARA CA
2017-12-04 805-255-4XXX 4000–4999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 SANBARBARA CA
2017-12-04 805-255-6XXX 6000–6999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 SANBARBARA CA
2017-12-04 805-255-7XXX 7000–7999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 SANBARBARA CA
2017-12-04 805-255-9XXX 9000–9999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 SANBARBARA CA
2017-12-01 805-877-2XXX 2000–2999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 VNTRA EAST CA
2017-12-01 805-877-3XXX 3000–3999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 VNTRA EAST CA
2017-12-01 805-877-4XXX 4000–4999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 VNTRA EAST CA
2017-12-01 805-877-5XXX 5000–5999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 VNTRA EAST CA
2017-12-01 805-877-6XXX 6000–6999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 VNTRA EAST CA
2017-12-01 805-877-7XXX 7000–7999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 VNTRA EAST CA
2017-12-01 805-932-2XXX 2000–2999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 SATICOY CA
2017-12-01 805-932-5XXX 5000–5999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 SATICOY CA
2017-11-30 805-282-0XXX 0000–0999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 NEWBURYPRK CA
2017-11-30 805-753-1XXX 1000–1999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 NEWBURYPRK CA
2017-11-30 805-753-2XXX 2000–2999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 NEWBURYPRK CA
2017-11-30 805-753-4XXX 4000–4999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 NEWBURYPRK CA
2017-11-30 805-789-1XXX 1000–1999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 OXNARD CA
2017-11-29 805-808-0XXX 0000–0999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 CAMARILLO CA
2017-11-29 805-808-1XXX 1000–1999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 CAMARILLO CA
2017-11-29 805-945-0XXX 0000–0999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 SNLUSOBSPO CA
2017-11-29 805-945-1XXX 1000–1999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 SNLUSOBSPO CA
2017-11-29 805-945-2XXX 2000–2999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 SNLUSOBSPO CA
2017-11-29 805-945-3XXX 3000–3999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 SNLUSOBSPO CA
2017-11-29 805-945-4XXX 4000–4999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 SNLUSOBSPO CA
2017-11-29 805-945-7XXX 7000–7999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 SNLUSOBSPO CA
2017-11-29 805-945-8XXX 8000–8999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 SNLUSOBSPO 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.