NumberResearchRecent thousands-block assignments
25 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, last 30 days — NPA 858
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 |
|---|---|---|---|---|---|---|---|
| 2022-11-15 | 858-665-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LA JOLLA | CA |
| 2022-11-15 | 858-665-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LA JOLLA | CA |
| 2022-11-07 | 858-723-7XXX | 7000–7999 | Assigned | TELNYX LLC | 073H | LA MESA | CA |
| 2022-11-03 | 858-363-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | JACUMBA | CA |
| 2022-11-03 | 858-363-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | JACUMBA | CA |
| 2022-11-03 | 858-363-2XXX | 2000–2999 | Assigned | COMMIO, LLC | 939H | JACUMBA | CA |
| 2022-10-28 | 858-341-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | CHULAVISTA | CA |
| 2022-10-28 | 858-341-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | CHULAVISTA | CA |
| 2022-10-28 | 858-351-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | SNDG SNDG | CA |
| 2022-10-28 | 858-351-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | SNDG SNDG | CA |
| 2022-10-26 | 858-331-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | CHULAVISTA | CA |
| 2022-10-26 | 858-331-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | CHULAVISTA | 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 |
| 2022-10-20 | 858-351-8XXX | 8000–8999 | Assigned | HD CARRIER LLC | 321J | SNDG SNDG | CA |
| 2022-10-20 | 858-351-9XXX | 9000–9999 | Assigned | HD CARRIER LLC | 321J | SNDG SNDG | CA |
| 2022-10-19 | 858-878-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LA MESA | 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 |
| 2022-10-10 | 858-331-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CHULAVISTA | CA |
| 2022-10-06 | 858-438-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | CHULAVISTA | CA |
| 2022-10-06 | 858-438-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | CHULAVISTA | CA |
| 2022-10-06 | 858-438-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | CHULAVISTA | CA |
| 2022-10-06 | 858-438-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | CHULAVISTA | CA |
| 2022-10-06 | 858-438-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | CHULAVISTA | CA |
| 2022-10-06 | 858-438-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | CHULAVISTA | CA |
| 2022-10-06 | 858-438-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | CHULAVISTA | CA |
| 2022-10-06 | 858-438-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | CHULAVISTA | CA |
| 2022-10-06 | 858-438-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | CHULAVISTA | CA |
| 2022-10-06 | 858-438-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | CHULAVISTA | CA |
| 2022-10-05 | 858-838-4XXX | 4000–4999 | Assigned | TELNYX LLC | 073H | CAMPO | 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 |
| 2022-09-20 | 858-838-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | CAMPO | CA |
| 2022-09-19 | 858-321-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | SNDG SNDG | CA |
| 2022-09-19 | 858-838-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | CAMPO | CA |
| 2022-09-19 | 858-868-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | SNDG SNDG | CA |
| 2022-09-16 | 858-397-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | SNDG MRMS | CA |
| 2022-09-16 | 858-466-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | LA MESA | 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.