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
2004-08-27 805-742-2XXX 2000–2999Assigned FRONTIER CALIFORNIA INC. 2319 LOMPOC CA
2004-08-27 805-742-3XXX 3000–3999Assigned FRONTIER CALIFORNIA INC. 2319 LOMPOC CA
2004-08-18 805-617-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 7718 SANBARBARA CA
2004-08-13 805-284-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SANBARBARA CA
2004-07-23 805-815-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 OXNARD CA
2004-07-19 805-233-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CAMARILLO CA
2004-07-19 805-233-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CAMARILLO CA
2004-07-19 805-406-6XXX 6000–6999Assigned METROPCS, INC. 5562 SANTAMARIA CA
2004-07-06 805-212-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VNTRA EAST CA
2004-07-02 805-975-2XXX 2000–2999Assigned METROPCS, INC. 5562 PASOROBLES CA
2004-06-23 805-815-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 OXNARD CA
2004-06-15 805-300-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 THOUSAOAKS CA
2004-06-10 805-286-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PASOROBLES CA
2004-06-10 805-433-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SIMIVALLEY CA
2004-06-09 805-460-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ATASCADERO CA
2004-05-24 805-204-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 OXNARD CA
2004-05-21 805-760-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 OXNARD CA
2004-05-13 805-665-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 VNTRA EAST CA
2004-05-12 805-202-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ARROYOGRND CA
2004-05-12 805-755-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CARPINTRIA CA
2004-05-09 805-284-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SANBARBARA CA
2004-05-09 805-284-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SANBARBARA CA
2004-04-13 805-345-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SANTAMARIA CA
2004-04-13 805-345-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SANTAMARIA CA
2004-04-13 805-345-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SANTAMARIA CA
2004-04-13 805-354-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SANTAMARIA CA
2004-04-09 805-233-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CAMARILLO CA
2004-04-09 805-290-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VNTRA EAST CA
2004-04-09 805-433-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SIMIVALLEY CA
2004-04-01 805-556-6XXX 6000–6999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J PISMOBEACH CA
2004-03-29 805-815-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 OXNARD CA
2004-03-26 805-757-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LOMPOC CA
2004-03-26 805-757-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LOMPOC CA
2004-03-23 805-204-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 OXNARD CA
2004-03-23 805-651-9XXX 9000–9999Assigned METROPCS NETWORKS, LLC 899D VNTRA CNTL CA
2004-03-17 805-284-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SANBARBARA CA
2004-03-17 805-633-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 OJAI CA
2004-03-16 805-283-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 POINT MUGU CA
2004-03-16 805-491-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CONEJO CA
2004-03-12 805-286-9XXX 9000–9999Assigned AT&T - LOCAL 7421 PASOROBLES CA
2004-03-12 805-713-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 NEWBURYPRK CA
2004-03-12 805-713-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 NEWBURYPRK CA
2004-03-12 805-713-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 NEWBURYPRK CA
2004-03-12 805-713-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 NEWBURYPRK CA
2004-03-12 805-713-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 NEWBURYPRK CA
2004-03-12 805-713-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 NEWBURYPRK CA
2004-03-12 805-713-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 NEWBURYPRK CA
2004-03-12 805-713-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 NEWBURYPRK CA
2004-03-12 805-713-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 NEWBURYPRK CA
2004-03-12 805-713-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 NEWBURYPRK 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.