NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

9 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 707
ONVOY, LLC - CA 6
NEW CINGULAR WIRELESS PCS, LLC 1
EXIANT COMMUNICATIONS LLC 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
2020-10-29 707-856-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2020-10-29 707-856-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2020-10-29 707-856-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2020-10-29 707-856-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2020-10-29 707-856-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2020-10-29 707-856-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2020-10-29 707-856-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2020-10-27 707-636-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2020-10-27 707-870-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2020-10-27 707-870-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2020-10-27 707-870-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2020-10-27 707-870-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2020-10-20 707-854-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 EUREKA CA
2020-10-20 707-854-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 EUREKA CA
2020-10-08 707-457-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CRESCENTCY CA
2020-10-07 707-852-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H SANTA ROSA CA
2020-10-02 707-852-0XXX 0000–0999Assigned SONIC TELECOM, LLC - CA 433E SANTA ROSA CA
2020-09-24 707-727-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 UKIAH CA
2020-09-24 707-828-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BENICIA CA
2020-09-24 707-828-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BENICIA CA
2020-09-24 707-971-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PTLM MAIN CA
2020-09-24 707-977-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 NAPA CA
2020-09-24 707-977-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 NAPA CA
2020-09-23 707-312-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 YOUNTVILLE CA
2020-09-21 707-852-1XXX 1000–1999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANTA ROSA CA
2020-09-21 707-852-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANTA ROSA CA
2020-09-21 707-852-3XXX 3000–3999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANTA ROSA CA
2020-09-21 707-852-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANTA ROSA CA
2020-09-21 707-852-5XXX 5000–5999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANTA ROSA CA
2020-09-21 707-945-6XXX 6000–6999Assigned TELNYX LLC 073H YOUNTVILLE CA
2020-09-20 707-222-6XXX 6000–6999Assigned TELNYX LLC 073H MIRANDA CA
2020-09-20 707-608-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 WINDSOR CA
2020-09-20 707-660-8XXX 8000–8999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L VACAVILLE CA
2020-09-20 707-727-6XXX 6000–6999Assigned UNITED STATES CELLULAR - CA 6261 UKIAH CA
2020-09-19 707-698-0XXX 0000–0999Assigned TELNYX LLC 073H TOMALES CA
2020-09-19 707-770-1XXX 1000–1999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L FRFLD-SUIS CA
2020-09-19 707-770-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L FRFLD-SUIS CA
2020-09-19 707-770-3XXX 3000–3999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L FRFLD-SUIS CA
2020-09-08 707-680-1XXX 1000–1999Assigned UNITED STATES CELLULAR - CA 6261 WILLITS CA
2020-09-04 707-612-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2020-09-04 707-612-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2020-09-04 707-612-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2020-09-04 707-612-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2020-09-04 707-612-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2020-09-04 707-612-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2020-09-04 707-870-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2020-09-04 707-870-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2020-09-04 707-870-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2020-09-04 707-870-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2020-08-28 707-627-0XXX 0000–0999Assigned UNITED STATES CELLULAR - CA 6261 LAKEPORT 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.