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
2017-11-29 805-945-9XXX 9000–9999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 SNLUSOBSPO CA
2017-11-29 805-999-0XXX 0000–0999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 SANTAMARIA CA
2017-11-29 805-999-1XXX 1000–1999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 SANTAMARIA CA
2017-11-29 805-999-2XXX 2000–2999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 SANTAMARIA CA
2017-11-29 805-999-3XXX 3000–3999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 SANTAMARIA CA
2017-11-29 805-999-4XXX 4000–4999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 SANTAMARIA CA
2017-11-29 805-999-5XXX 5000–5999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 SANTAMARIA CA
2017-11-29 805-999-6XXX 6000–6999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 SANTAMARIA CA
2017-11-29 805-999-9XXX 9000–9999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 SANTAMARIA CA
2017-11-21 805-837-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C SANBARBARA CA
2017-11-21 805-837-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C SANBARBARA CA
2017-11-21 805-853-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C OXNARD CA
2017-11-21 805-853-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C OXNARD CA
2017-11-13 805-318-9XXX 9000–9999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L CARPINTRIA CA
2017-11-13 805-679-5XXX 5000–5999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANBARBARA CA
2017-11-01 805-871-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CONEJO CA
2017-11-01 805-873-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTAPAULA CA
2017-10-13 805-307-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EL RIO CA
2017-10-05 805-883-2XXX 2000–2999Assigned FRONTIER CALIFORNIA INC. 2319 SANBARBARA CA
2017-10-04 805-261-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 SIMIVALLEY CA
2017-10-04 805-743-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LOMPOC CA
2017-10-03 805-356-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C GUADALUPE CA
2017-09-29 805-554-3XXX 3000–3999Assigned FRONTIER CALIFORNIA INC. 2319 SANTAMARIA CA
2017-09-26 805-356-6XXX 6000–6999Assigned CHARTER IP ENABLED SERVICES, LLC 792K GUADALUPE CA
2017-09-21 805-699-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SANBARBARA CA
2017-09-20 805-554-7XXX 7000–7999Assigned METROPCS, INC. 5562 SANTAMARIA CA
2017-09-20 805-554-8XXX 8000–8999Assigned METROPCS, INC. 5562 SANTAMARIA CA
2017-09-19 805-219-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 GUADALUPE CA
2017-09-14 805-585-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VNTRA CNTL CA
2017-09-12 805-788-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNLUSOBSPO CA
2017-09-12 805-862-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANTAMARIA CA
2017-09-11 805-920-9XXX 9000–9999Assigned PAETEC ITEL, LLC 829J SOMIS CA
2017-08-29 805-536-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PASOROBLES CA
2017-08-18 805-853-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 OXNARD CA
2017-08-14 805-538-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ATASCADERO CA
2017-08-14 805-638-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SIMIVALLEY CA
2017-08-10 805-554-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SANTAMARIA CA
2017-08-10 805-554-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SANTAMARIA CA
2017-08-10 805-722-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SANBARBARA CA
2017-08-02 805-244-1XXX 1000–1999Assigned TELNYX LLC 073H CONEJO CA
2017-08-02 805-429-3XXX 3000–3999Assigned TELNYX LLC 073H POINT MUGU CA
2017-08-02 805-514-3XXX 3000–3999Assigned TELNYX LLC 073H FILLMORE CA
2017-08-02 805-613-9XXX 9000–9999Assigned TELNYX LLC 073H OAKVIEW CA
2017-08-02 805-707-9XXX 9000–9999Assigned TELNYX LLC 073H OJAI CA
2017-08-02 805-954-8XXX 8000–8999Assigned TELNYX LLC 073H SATICOY CA
2017-07-31 805-869-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SANBARBARA CA
2017-07-27 805-261-6XXX 6000–6999Assigned METROPCS NETWORKS, LLC 899D SIMIVALLEY CA
2017-07-27 805-401-8XXX 8000–8999Assigned METROPCS NETWORKS, LLC 899D OXNARD CA
2017-07-27 805-401-9XXX 9000–9999Assigned METROPCS NETWORKS, LLC 899D OXNARD CA
2017-07-26 805-695-1XXX 1000–1999Assigned METROPCS, INC. 5562 SANBARBARA 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.