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 858
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 |
|---|---|---|---|---|---|---|---|
| 2026-05-20 | 858-338-6XXX | 6000–6999 | Assigned | TELNYX LLC | 073H | HARBSNALPN | CA |
| 2025-07-23 | 858-417-5XXX | 5000–5999 | Assigned | TELNYX LLC | 073H | NATIONALCY | CA |
| 2024-10-09 | 858-422-5XXX | 5000–5999 | Assigned | TELNYX LLC | 073H | CORONADO | CA |
| 2024-09-06 | 858-878-6XXX | 6000–6999 | Assigned | TELNYX LLC | 073H | LA MESA | CA |
| 2024-08-13 | 858-477-5XXX | 5000–5999 | Assigned | TELNYX LLC | 073H | SNDG SNDG | CA |
| 2023-12-29 | 858-339-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | EL CAJON | CA |
| 2023-08-29 | 858-317-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | DULZURA | CA |
| 2023-04-24 | 858-341-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | CHULAVISTA | CA |
| 2023-04-24 | 858-341-2XXX | 2000–2999 | Assigned | TELNYX LLC | 073H | CHULAVISTA | CA |
| 2023-04-24 | 858-341-3XXX | 3000–3999 | Assigned | TELNYX LLC | 073H | CHULAVISTA | CA |
| 2023-02-17 | 858-363-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | JACUMBA | CA |
| 2023-02-15 | 858-339-5XXX | 5000–5999 | Assigned | TELNYX LLC | 073H | EL CAJON | CA |
| 2023-01-18 | 858-898-5XXX | 5000–5999 | Assigned | TELNYX LLC | 073H | CORONADO | CA |
| 2022-12-13 | 858-742-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | SNDG LVTA | CA |
| 2022-11-29 | 858-341-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | CHULAVISTA | CA |
| 2022-11-07 | 858-723-7XXX | 7000–7999 | Assigned | TELNYX LLC | 073H | LA MESA | CA |
| 2022-10-05 | 858-838-4XXX | 4000–4999 | Assigned | TELNYX LLC | 073H | CAMPO | CA |
| 2022-05-12 | 858-838-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | CAMPO | CA |
| 2021-12-17 | 858-533-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | HARBSNALPN | CA |
| 2021-11-16 | 858-428-3XXX | 3000–3999 | Assigned | TELNYX LLC | 073H | RNCHOPNQTS | CA |
| 2021-11-02 | 858-644-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | SNDG MRMS | CA |
| 2021-02-23 | 858-399-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | CORONADO | CA |
| 2021-02-15 | 858-306-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | DEL MAR | CA |
| 2021-02-14 | 858-241-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | LA JOLLA | CA |
| 2021-02-14 | 858-400-3XXX | 3000–3999 | Assigned | TELNYX LLC | 073H | RNCHOSANFE | CA |
| 2021-02-14 | 858-588-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | RNCHOBRNDO | CA |
| 2021-02-11 | 858-955-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | PINEVALLEY | CA |
| 2021-01-28 | 858-269-6XXX | 6000–6999 | Assigned | TELNYX LLC | 073H | POWAY | CA |
| 2021-01-27 | 858-216-3XXX | 3000–3999 | Assigned | TELNYX LLC | 073H | RNCHOPNQTS | CA |
| 2020-12-14 | 858-293-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | SNDG MRMS | CA |
| 2020-12-14 | 858-667-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | SNDG LVTA | CA |
| 2020-12-14 | 858-727-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | SNDG SNDG | CA |
| 2020-10-27 | 858-599-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | NATIONALCY | CA |
| 2019-12-18 | 858-788-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | LA JOLLA | CA |
| 2019-08-19 | 858-214-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | LA JOLLA | CA |
| 2018-10-08 | 858-465-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | DEL MAR | CA |
| 2017-05-23 | 858-324-3XXX | 3000–3999 | Assigned | TELNYX LLC | 073H | RNCHOPNQTS | CA |
| 2017-05-23 | 858-779-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | RNCHOSANFE | CA |
| 2017-03-14 | 858-280-3XXX | 3000–3999 | Assigned | TELNYX LLC | 073H | DEL MAR | CA |
| 2017-03-14 | 858-283-5XXX | 5000–5999 | Assigned | TELNYX LLC | 073H | LA JOLLA | CA |
| 2017-03-14 | 858-285-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | SNDG LVTA | CA |
| 2017-03-14 | 858-437-6XXX | 6000–6999 | Assigned | TELNYX LLC | 073H | SNDG MRMS | CA |
| 2017-03-14 | 858-726-5XXX | 5000–5999 | Assigned | TELNYX LLC | 073H | POWAY | CA |
| 2017-03-14 | 858-946-5XXX | 5000–5999 | Assigned | TELNYX LLC | 073H | RNCHOBRNDO | 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.