NumberResearchRecent thousands-block assignments
11 blocks assigned in September 2026 · 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, September 2026 — NPA 341
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-09-17 | 341-732-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | ELSBR-PINL | CA |
| 2026-09-16 | 341-256-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | OKLD FRTVL | CA |
| 2026-09-16 | 341-256-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | OKLD FRTVL | CA |
| 2026-09-14 | 341-243-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | HRCUL-RODE | CA |
| 2026-09-03 | 341-261-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | FRNK GRNLF | CA |
| 2026-09-03 | 341-264-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | OKLD MN-PD | CA |
| 2026-09-03 | 341-265-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | ELSBR-PINL | CA |
| 2026-09-02 | 341-270-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | OKLD ALMD | CA |
| 2026-09-02 | 341-270-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | OKLD ALMD | CA |
| 2026-09-02 | 341-270-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | OKLD ALMD | CA |
| 2026-09-01 | 341-266-6XXX | 6000–6999 | Assigned | SONIC TELECOM, LLC - CA | 433E | OKLD BKLY | 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.