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
2020-08-25 707-920-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 FRFLD-SUIS CA
2020-08-11 707-222-3XXX 3000–3999Assigned TWILIO INTERNATIONAL, INC. 506J MIRANDA CA
2020-08-11 707-828-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BENICIA CA
2020-08-11 707-870-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SANTA ROSA CA
2020-08-07 707-237-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SANTA ROSA CA
2020-08-07 707-699-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 NAPA CA
2020-08-07 707-977-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 NAPA CA
2020-08-03 707-237-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2020-08-03 707-848-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2020-08-03 707-848-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2020-08-03 707-848-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2020-08-03 707-848-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2020-08-03 707-848-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2020-07-24 707-727-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 UKIAH CA
2020-07-24 707-992-6XXX 6000–6999Assigned SONIC TELECOM, LLC - CA 433E PTLM SWIFT CA
2020-07-22 707-657-1XXX 1000–1999Assigned METROPCS, INC. 5562 WINDSOR CA
2020-07-22 707-848-0XXX 0000–0999Assigned METROPCS, INC. 5562 SANTA ROSA CA
2020-07-21 707-409-8XXX 8000–8999Assigned UNITED STATES CELLULAR - CA 6261 FORT BRAGG CA
2020-07-17 707-727-0XXX 0000–0999Assigned UNITED STATES CELLULAR - CA 6261 UKIAH CA
2020-07-07 707-971-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PTLM MAIN CA
2020-07-02 707-558-4XXX 4000–4999Assigned METROPCS, INC. 5562 VALLEJO CA
2020-07-02 707-558-7XXX 7000–7999Assigned METROPCS, INC. 5562 VALLEJO CA
2020-07-02 707-770-0XXX 0000–0999Assigned FRACTEL, LLC 965H FRFLD-SUIS CA
2020-07-02 707-848-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2020-07-02 707-848-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2020-07-02 707-848-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2020-07-02 707-848-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2020-07-02 707-866-7XXX 7000–7999Assigned FRACTEL, LLC 965H VALLEJO CA
2020-07-02 707-977-7XXX 7000–7999Assigned FRACTEL, LLC 965H NAPA CA
2020-06-30 707-316-7XXX 7000–7999Assigned FRACTEL, LLC 965H DIXON CA
2020-06-30 707-613-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 EUREKA CA
2020-06-30 707-740-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 EUREKA CA
2020-06-30 707-899-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ROSA CA
2020-06-22 707-660-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H VACAVILLE CA
2020-06-22 707-660-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H VACAVILLE CA
2020-06-22 707-660-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H VACAVILLE CA
2020-06-18 707-699-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 NAPA CA
2020-06-17 707-241-1XXX 1000–1999Assigned METROPCS, INC. 5562 PTLM MAIN CA
2020-06-17 707-434-4XXX 4000–4999Assigned METROPCS, INC. 5562 FRFLD-SUIS CA
2020-06-17 707-730-3XXX 3000–3999Assigned METROPCS, INC. 5562 LAKEPORT CA
2020-06-08 707-981-9XXX 9000–9999Assigned SONIC TELECOM, LLC - CA 433E PTLM MAIN CA
2020-06-02 707-697-1XXX 1000–1999Assigned VONAGE AMERICA LLC 197D SANTA ROSA CA
2020-06-02 707-899-7XXX 7000–7999Assigned VONAGE AMERICA LLC 197D SANTA ROSA CA
2020-05-11 707-316-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E DIXON CA
2020-05-11 707-831-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CLERLAOAKS CA
2020-05-04 707-697-0XXX 0000–0999Assigned AIRESPRING, INC. 996H SANTA ROSA CA
2020-04-21 707-551-5XXX 5000–5999Assigned AIRESPRING, INC. 996H VALLEJO CA
2020-04-16 707-336-1XXX 1000–1999Assigned TELNYX LLC 073H PETROLIA CA
2020-04-16 707-375-6XXX 6000–6999Assigned TELNYX LLC 073H RIO VISTA CA
2020-04-16 707-607-1XXX 1000–1999Assigned TELNYX LLC 073H FERNDALE 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.