NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026
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
New assignments by month
Sep 2026
Aug 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2021-12-16 | 707-909-7XXX | 7000–7999 | Assigned | SONIC TELECOM, LLC - CA | 433E | SANTA ROSA | CA |
| 2021-08-17 | 707-910-0XXX | 0000–0999 | Assigned | SONIC TELECOM, LLC - CA | 433E | SEBASTOPOL | CA |
| 2021-02-14 | 707-780-5XXX | 5000–5999 | Assigned | SONIC TELECOM, LLC - CA | 433E | PTLM MAIN | CA |
| 2020-12-01 | 707-859-0XXX | 0000–0999 | Assigned | SONIC TELECOM, LLC - CA | 433E | SANTA ROSA | CA |
| 2020-10-02 | 707-852-0XXX | 0000–0999 | Assigned | SONIC TELECOM, LLC - CA | 433E | SANTA ROSA | CA |
| 2020-07-24 | 707-992-6XXX | 6000–6999 | Assigned | SONIC TELECOM, LLC - CA | 433E | PTLM SWIFT | CA |
| 2020-06-08 | 707-981-9XXX | 9000–9999 | Assigned | SONIC TELECOM, LLC - CA | 433E | PTLM MAIN | CA |
| 2019-05-15 | 707-284-7XXX | 7000–7999 | Assigned | SONIC TELECOM, LLC - CA | 433E | SANTA ROSA | CA |
| 2019-05-15 | 707-981-5XXX | 5000–5999 | Assigned | SONIC TELECOM, LLC - CA | 433E | PTLM MAIN | CA |
| 2018-10-31 | 707-699-3XXX | 3000–3999 | Assigned | SONIC TELECOM, LLC - CA | 433E | NAPA | CA |
| 2018-08-14 | 707-919-0XXX | 0000–0999 | Assigned | SONIC TELECOM, LLC - CA | 433E | SANTA ROSA | CA |
| 2017-12-22 | 707-971-8XXX | 8000–8999 | Assigned | SONIC TELECOM, LLC - CA | 433E | PTLM MAIN | CA |
| 2017-03-20 | 707-757-7XXX | 7000–7999 | Assigned | SONIC TELECOM, LLC - CA | 433E | SANTA ROSA | CA |
| 2017-02-06 | 707-708-0XXX | 0000–0999 | Assigned | SONIC TELECOM, LLC - CA | 433E | SANTA ROSA | CA |
| 2016-03-30 | 707-757-9XXX | 9000–9999 | Assigned | SONIC TELECOM, LLC - CA | 433E | SANTA ROSA | CA |
| 2016-03-18 | 707-757-5XXX | 5000–5999 | Assigned | SONIC TELECOM, LLC - CA | 433E | SANTA ROSA | CA |
| 2016-03-16 | 707-789-6XXX | 6000–6999 | Assigned | SONIC TELECOM, LLC - CA | 433E | PTLM MAIN | CA |
| 2015-11-18 | 707-728-9XXX | 9000–9999 | Assigned | SONIC TELECOM, LLC - CA | 433E | GUERNEVL | CA |
| 2015-11-18 | 707-742-1XXX | 1000–1999 | Assigned | SONIC TELECOM, LLC - CA | 433E | BENICIA | CA |
| 2015-11-18 | 707-873-8XXX | 8000–8999 | Assigned | SONIC TELECOM, LLC - CA | 433E | OCCIDENTAL | CA |
| 2015-11-18 | 707-891-8XXX | 8000–8999 | Assigned | SONIC TELECOM, LLC - CA | 433E | CLOVERDALE | CA |
| 2015-08-26 | 707-708-7XXX | 7000–7999 | Assigned | SONIC TELECOM, LLC - CA | 433E | SANTA ROSA | CA |
| 2015-08-26 | 707-708-8XXX | 8000–8999 | Assigned | SONIC TELECOM, LLC - CA | 433E | SANTA ROSA | CA |
| 2015-02-19 | 707-890-8XXX | 8000–8999 | Assigned | SONIC TELECOM, LLC - CA | 433E | SANTA ROSA | CA |
| 2014-05-16 | 707-791-1XXX | 1000–1999 | Assigned | SONIC TELECOM, LLC - CA | 433E | SANTA ROSA | CA |
| 2013-05-08 | 707-671-9XXX | 9000–9999 | Assigned | SONIC TELECOM, LLC - CA | 433E | UKIAH | CA |
| 2012-11-28 | 707-244-2XXX | 2000–2999 | Assigned | SONIC TELECOM, LLC - CA | 433E | ST HELENA | CA |
| 2012-11-28 | 707-346-3XXX | 3000–3999 | Assigned | SONIC TELECOM, LLC - CA | 433E | NAPA | CA |
| 2012-11-28 | 707-397-4XXX | 4000–4999 | Assigned | SONIC TELECOM, LLC - CA | 433E | MENDOCINO | CA |
| 2012-11-28 | 707-439-2XXX | 2000–2999 | Assigned | SONIC TELECOM, LLC - CA | 433E | FRFLD-SUIS | CA |
| 2012-11-28 | 707-531-5XXX | 5000–5999 | Assigned | SONIC TELECOM, LLC - CA | 433E | YOUNTVILLE | CA |
| 2012-11-28 | 707-562-5XXX | 5000–5999 | Assigned | SONIC TELECOM, LLC - CA | 433E | VALLEJO | CA |
| 2012-11-28 | 707-665-6XXX | 6000–6999 | Assigned | SONIC TELECOM, LLC - CA | 433E | PTLM SWIFT | CA |
| 2012-11-28 | 707-723-7XXX | 7000–7999 | Assigned | SONIC TELECOM, LLC - CA | 433E | HEALDSBURG | CA |
| 2012-11-28 | 707-734-9XXX | 9000–9999 | Assigned | SONIC TELECOM, LLC - CA | 433E | FORT BRAGG | CA |
| 2012-11-28 | 707-789-7XXX | 7000–7999 | Assigned | SONIC TELECOM, LLC - CA | 433E | PTLM MAIN | CA |
| 2012-11-28 | 707-827-8XXX | 8000–8999 | Assigned | SONIC TELECOM, LLC - CA | 433E | SEBASTOPOL | CA |
| 2012-11-28 | 707-887-4XXX | 4000–4999 | Assigned | SONIC TELECOM, LLC - CA | 433E | FORESTVL | CA |
| 2012-11-19 | 707-687-0XXX | 0000–0999 | Assigned | SONIC TELECOM, LLC - CA | 433E | WINDSOR | CA |
| 2012-11-19 | 707-934-1XXX | 1000–1999 | Assigned | SONIC TELECOM, LLC - CA | 433E | SONOMA | CA |
| 2012-10-02 | 707-755-5XXX | 5000–5999 | Assigned | SONIC TELECOM, LLC - CA | 433E | SANTA ROSA | CA |
| 2007-04-23 | 707-397-1XXX | 1000–1999 | Assigned | SONIC TELECOM, LLC - CA | 433E | MENDOCINO | CA |
| 2007-03-14 | 707-669-2XXX | 2000–2999 | Assigned | SONIC TELECOM, LLC - CA | 433E | CLOVERDALE | CA |
| 2007-03-14 | 707-820-8XXX | 8000–8999 | Assigned | SONIC TELECOM, LLC - CA | 433E | FORESTVL | CA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.