NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

0 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, all time — NPA 707
COMCAST PHONE OF CALIFORNIA, LLC 143
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
2024-09-23 707-593-1XXX 1000–1999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L MENDOCINO CA
2024-09-18 707-680-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L WILLITS CA
2023-03-07 707-609-5XXX 5000–5999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L BODEGA BAY CA
2022-10-13 707-320-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L NAPA CA
2022-10-13 707-658-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L PTLM MAIN CA
2022-10-13 707-658-8XXX 8000–8999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L PTLM MAIN CA
2022-10-13 707-658-9XXX 9000–9999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L PTLM MAIN CA
2022-10-13 707-913-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L NAPA CA
2022-10-13 707-913-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L NAPA CA
2022-09-13 707-531-8XXX 8000–8999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L YOUNTVILLE CA
2022-09-13 707-614-8XXX 8000–8999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L FORESTVL CA
2022-06-08 707-952-1XXX 1000–1999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L UKIAH CA
2022-05-24 707-375-5XXX 5000–5999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L RIO VISTA CA
2022-05-03 707-941-7XXX 7000–7999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L FORT BRAGG CA
2021-06-14 707-231-1XXX 1000–1999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SONOMA 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
2020-09-20 707-660-8XXX 8000–8999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L VACAVILLE 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
2020-03-04 707-804-3XXX 3000–3999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L ST HELENA CA
2020-01-22 707-385-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L HEALDSBURG CA
2019-07-05 707-801-8XXX 8000–8999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L KENWOOD CA
2019-04-11 707-503-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SEBASTOPOL CA
2019-04-02 707-796-5XXX 5000–5999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L PTLM SWIFT CA
2019-03-18 707-801-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L KENWOOD CA
2019-03-18 707-801-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L KENWOOD CA
2018-12-20 707-378-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L RIO VISTA CA
2018-11-20 707-919-3XXX 3000–3999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANTA ROSA CA
2018-08-30 707-699-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L NAPA CA
2018-08-30 707-920-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L FRFLD-SUIS CA
2018-04-04 707-305-5XXX 5000–5999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L VACAVILLE CA
2018-03-22 707-699-1XXX 1000–1999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L NAPA CA
2018-01-11 707-615-7XXX 7000–7999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANTA ROSA CA
2017-12-08 707-347-5XXX 5000–5999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L PTLM MAIN CA
2017-10-03 707-757-8XXX 8000–8999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANTA ROSA CA
2017-07-03 707-917-5XXX 5000–5999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L VALLEJO CA
2017-07-03 707-917-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L VALLEJO CA
2017-06-23 707-512-3XXX 3000–3999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L ST HELENA CA
2017-03-14 707-833-0XXX 0000–0999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L KENWOOD CA
2017-01-31 707-806-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANTA ROSA CA
2016-09-13 707-308-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANTA ROSA CA
2016-09-08 707-819-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L NAPA CA
2016-05-23 707-752-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L BENICIA CA
2015-11-11 707-708-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SANTA ROSA CA
2015-10-06 707-892-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L WINDSOR 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.