NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026
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 650
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 |
|---|---|---|---|---|---|---|---|
| 2025-05-16 | 650-639-4XXX | 4000–4999 | Assigned | SONIC TELECOM, LLC - CA | 433E | SAN MATEO | CA |
| 2025-04-15 | 650-820-3XXX | 3000–3999 | Assigned | SONIC TELECOM, LLC - CA | 433E | REDWOOD CY | CA |
| 2024-03-04 | 650-674-6XXX | 6000–6999 | Assigned | SONIC TELECOM, LLC - CA | 433E | SNCRL-BLMT | CA |
| 2024-02-27 | 650-760-5XXX | 5000–5999 | Assigned | SONIC TELECOM, LLC - CA | 433E | SSNFRNCSCO | CA |
| 2023-07-07 | 650-706-0XXX | 0000–0999 | Assigned | SONIC TELECOM, LLC - CA | 433E | SAN MATEO | CA |
| 2022-08-29 | 650-608-6XXX | 6000–6999 | Assigned | SONIC TELECOM, LLC - CA | 433E | SNFC JUNPR | CA |
| 2021-05-07 | 650-699-0XXX | 0000–0999 | Assigned | SONIC TELECOM, LLC - CA | 433E | SAN MATEO | CA |
| 2021-03-09 | 650-394-0XXX | 0000–0999 | Assigned | SONIC TELECOM, LLC - CA | 433E | SNCRL-BLMT | CA |
| 2020-10-02 | 650-514-9XXX | 9000–9999 | Assigned | SONIC TELECOM, LLC - CA | 433E | SAN MATEO | CA |
| 2015-11-18 | 650-535-5XXX | 5000–5999 | Assigned | SONIC TELECOM, LLC - CA | 433E | MOSS BEACH | CA |
| 2012-11-28 | 650-300-6XXX | 6000–6999 | Assigned | SONIC TELECOM, LLC - CA | 433E | PALO ALTO | CA |
| 2012-11-28 | 650-530-5XXX | 5000–5999 | Assigned | SONIC TELECOM, LLC - CA | 433E | WOODSIDE | CA |
| 2012-11-28 | 650-564-5XXX | 5000–5999 | Assigned | SONIC TELECOM, LLC - CA | 433E | MT VIEW | CA |
| 2012-11-28 | 650-581-0XXX | 0000–0999 | Assigned | SONIC TELECOM, LLC - CA | 433E | SAN MATEO | CA |
| 2012-11-28 | 650-597-5XXX | 5000–5999 | Assigned | SONIC TELECOM, LLC - CA | 433E | SNCRL-BLMT | CA |
| 2012-11-28 | 650-679-6XXX | 6000–6999 | Assigned | SONIC TELECOM, LLC - CA | 433E | REDWOOD CY | CA |
| 2012-11-28 | 650-684-6XXX | 6000–6999 | Assigned | SONIC TELECOM, LLC - CA | 433E | MILLBRAE | CA |
| 2012-11-28 | 650-869-9XXX | 9000–9999 | Assigned | SONIC TELECOM, LLC - CA | 433E | SSNFRNCSCO | CA |
| 2012-11-28 | 650-887-8XXX | 8000–8999 | Assigned | SONIC TELECOM, LLC - CA | 433E | LOS ALTOS | CA |
| 2012-11-12 | 650-889-3XXX | 3000–3999 | Assigned | SONIC TELECOM, LLC - CA | 433E | HALFMOONBY | 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.