NumberResearchRecent thousands-block assignments
0 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, all time — NPA 510
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
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2024-03-18 | 510-312-5XXX | 5000–5999 | Assigned | TELNYX LLC | 073H | CROCKETT | CA |
| 2021-09-14 | 510-973-2XXX | 2000–2999 | Assigned | TELNYX LLC | 073H | OKLD BKLY | CA |
| 2021-01-28 | 510-327-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | HRCUL-RODE | CA |
| 2021-01-27 | 510-264-7XXX | 7000–7999 | Assigned | TELNYX LLC | 073H | HAYWARD | CA |
| 2020-12-11 | 510-544-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | OKLD TRNID | CA |
| 2019-10-31 | 510-216-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | OKLD FRTVL | CA |
| 2019-08-16 | 510-977-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | OKLD BKLY | CA |
| 2018-11-12 | 510-905-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | OKLD ALMD | CA |
| 2018-06-28 | 510-650-3XXX | 3000–3999 | Assigned | TELNYX LLC | 073H | ELSBR-PINL | CA |
| 2017-07-11 | 510-726-2XXX | 2000–2999 | Assigned | TELNYX LLC | 073H | CROCKETT | CA |
| 2017-05-31 | 510-738-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | FRNK OLIVR | CA |
| 2017-05-31 | 510-949-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | HRCUL-RODE | CA |
| 2017-05-23 | 510-561-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | OKLD FRTVL | CA |
| 2017-05-23 | 510-822-3XXX | 3000–3999 | Assigned | TELNYX LLC | 073H | OKLD TRNID | CA |
| 2017-05-23 | 510-941-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | FRNK GRNLF | CA |
| 2017-03-13 | 510-570-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | OKLD BKLY | CA |
| 2017-03-13 | 510-660-6XXX | 6000–6999 | Assigned | TELNYX LLC | 073H | RICHMOND | CA |
| 2017-03-13 | 510-766-7XXX | 7000–7999 | Assigned | TELNYX LLC | 073H | FRNK MAIN | CA |
| 2017-03-13 | 510-826-4XXX | 4000–4999 | Assigned | TELNYX LLC | 073H | HAYWARD | CA |
| 2017-03-13 | 510-947-6XXX | 6000–6999 | Assigned | TELNYX LLC | 073H | OKLD MN-PD | 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.