NumberResearchRecent thousands-block assignments
1 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026
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, last 30 days — NPA 341
New assignments by month
Sep 2026
Aug 2026
Jul 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-09-01 | 341-266-6XXX | 6000–6999 | Assigned | SONIC TELECOM, LLC - CA | 433E | OKLD BKLY | CA |
| 2026-01-27 | 341-244-2XXX | 2000–2999 | Assigned | SONIC TELECOM, LLC - CA | 433E | OKLD TRNID | CA |
| 2025-08-22 | 341-244-3XXX | 3000–3999 | Assigned | SONIC TELECOM, LLC - CA | 433E | OKLD TRNID | CA |
| 2024-12-10 | 341-260-2XXX | 2000–2999 | Assigned | SONIC TELECOM, LLC - CA | 433E | HAYWARD | CA |
| 2024-09-18 | 341-254-5XXX | 5000–5999 | Assigned | SONIC TELECOM, LLC - CA | 433E | OKLD BKLY | CA |
| 2024-02-16 | 341-210-6XXX | 6000–6999 | Assigned | SONIC TELECOM, LLC - CA | 433E | OKLD ALMD | CA |
| 2023-07-07 | 341-688-7XXX | 7000–7999 | Assigned | SONIC TELECOM, LLC - CA | 433E | OKLD BKLY | CA |
| 2022-05-03 | 341-215-5XXX | 5000–5999 | Assigned | SONIC TELECOM, LLC - CA | 433E | RICHMOND | CA |
| 2022-01-14 | 341-441-0XXX | 0000–0999 | Assigned | SONIC TELECOM, LLC - CA | 433E | OKLD MN-PD | CA |
| 2022-01-14 | 341-441-4XXX | 4000–4999 | Assigned | SONIC TELECOM, LLC - CA | 433E | OKLD MN-PD | CA |
| 2022-01-13 | 341-420-4XXX | 4000–4999 | Assigned | SONIC TELECOM, LLC - CA | 433E | OKLD FRTVL | CA |
| 2021-12-13 | 341-699-0XXX | 0000–0999 | Assigned | SONIC TELECOM, LLC - CA | 433E | OKLD MN-PD | CA |
| 2021-10-28 | 341-420-0XXX | 0000–0999 | Assigned | SONIC TELECOM, LLC - CA | 433E | OKLD FRTVL | CA |
| 2021-08-19 | 341-946-9XXX | 9000–9999 | Assigned | SONIC TELECOM, LLC - CA | 433E | OKLD BKLY | CA |
| 2021-07-20 | 341-667-0XXX | 0000–0999 | Assigned | SONIC TELECOM, LLC - CA | 433E | OKLD FRTVL | CA |
| 2021-05-21 | 341-299-0XXX | 0000–0999 | Assigned | SONIC TELECOM, LLC - CA | 433E | OKLD TRNID | CA |
| 2021-04-01 | 341-400-5XXX | 5000–5999 | Assigned | SONIC TELECOM, LLC - CA | 433E | OKLD FRTVL | CA |
| 2020-10-02 | 341-766-5XXX | 5000–5999 | Assigned | SONIC TELECOM, LLC - CA | 433E | OKLD BKLY | CA |
| 2019-09-09 | 341-333-0XXX | 0000–0999 | Assigned | SONIC TELECOM, LLC - CA | 433E | OKLD BKLY | CA |
| 2019-09-09 | 341-333-2XXX | 2000–2999 | Assigned | SONIC TELECOM, LLC - CA | 433E | OKLD BKLY | CA |
| 2019-09-03 | 341-333-1XXX | 1000–1999 | Assigned | SONIC TELECOM, LLC - CA | 433E | OKLD BKLY | CA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.