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 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 |
|---|---|---|---|---|---|---|---|
| 2026-08-13 | 858-464-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CHULAVISTA | CA |
| 2026-08-13 | 858-464-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CHULAVISTA | CA |
| 2026-08-13 | 858-464-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CHULAVISTA | CA |
| 2026-08-13 | 858-464-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CHULAVISTA | CA |
| 2026-04-02 | 858-443-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CHULAVISTA | CA |
| 2026-04-02 | 858-443-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CHULAVISTA | CA |
| 2024-09-26 | 858-393-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | DEL MAR | CA |
| 2024-09-26 | 858-393-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | DEL MAR | CA |
| 2022-10-26 | 858-878-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LA MESA | CA |
| 2022-10-26 | 858-878-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LA MESA | CA |
| 2022-10-26 | 858-878-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LA MESA | CA |
| 2022-10-26 | 858-878-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LA MESA | CA |
| 2022-10-21 | 858-898-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CORONADO | CA |
| 2022-10-21 | 858-898-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CORONADO | CA |
| 2022-10-17 | 858-462-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | NATIONALCY | CA |
| 2022-10-17 | 858-462-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | NATIONALCY | CA |
| 2022-10-17 | 858-462-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | NATIONALCY | CA |
| 2022-10-17 | 858-462-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | NATIONALCY | CA |
| 2022-10-04 | 858-326-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CHULAVISTA | CA |
| 2022-10-04 | 858-326-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CHULAVISTA | CA |
| 2022-10-04 | 858-326-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CHULAVISTA | CA |
| 2022-10-04 | 858-326-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CHULAVISTA | CA |
| 2022-10-04 | 858-326-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CHULAVISTA | CA |
| 2022-10-04 | 858-326-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CHULAVISTA | CA |
| 2022-10-04 | 858-326-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CHULAVISTA | CA |
| 2022-09-13 | 858-723-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | LA MESA | CA |
| 2022-09-01 | 858-462-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | NATIONALCY | CA |
| 2022-08-26 | 858-321-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SNDG SNDG | CA |
| 2022-08-26 | 858-321-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SNDG SNDG | CA |
| 2022-08-05 | 858-422-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CORONADO | CA |
| 2022-08-05 | 858-898-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CORONADO | CA |
| 2022-07-21 | 858-379-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | EL CAJON | CA |
| 2022-07-21 | 858-379-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | EL CAJON | CA |
| 2022-07-21 | 858-379-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | EL CAJON | CA |
| 2022-07-21 | 858-379-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | EL CAJON | CA |
| 2022-07-21 | 858-379-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | EL CAJON | CA |
| 2022-07-21 | 858-379-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | EL CAJON | CA |
| 2022-07-21 | 858-379-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | EL CAJON | CA |
| 2021-07-08 | 858-477-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SNDG SNDG | CA |
| 2021-07-08 | 858-477-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SNDG SNDG | CA |
| 2021-07-08 | 858-727-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SNDG SNDG | CA |
| 2021-07-08 | 858-727-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SNDG SNDG | CA |
| 2021-07-08 | 858-727-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SNDG SNDG | CA |
| 2020-12-11 | 858-227-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | RNCHOSANFE | CA |
| 2020-10-21 | 858-428-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | RNCHOPNQTS | CA |
| 2020-10-21 | 858-834-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | RNCHOPNQTS | CA |
| 2019-07-23 | 858-294-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CHULAVISTA | CA |
| 2019-07-23 | 858-294-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CHULAVISTA | CA |
| 2019-06-12 | 858-266-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SNDG LVTA | CA |
| 2019-05-07 | 858-429-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | SNDG LVTA | 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.