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 |
|---|---|---|---|---|---|---|---|
| 2021-06-25 | 858-567-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | LA JOLLA | CA |
| 2021-06-25 | 858-567-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | LA JOLLA | CA |
| 2021-06-25 | 858-567-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | LA JOLLA | CA |
| 2021-06-25 | 858-786-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | NATIONALCY | CA |
| 2021-06-25 | 858-786-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | NATIONALCY | CA |
| 2021-06-25 | 858-786-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | NATIONALCY | CA |
| 2021-06-25 | 858-786-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | NATIONALCY | CA |
| 2021-06-25 | 858-834-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | RNCHOPNQTS | CA |
| 2021-06-25 | 858-955-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | PINEVALLEY | CA |
| 2021-06-24 | 858-313-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | DEL MAR | CA |
| 2021-06-24 | 858-313-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | DEL MAR | CA |
| 2021-06-24 | 858-369-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | DEL MAR | CA |
| 2021-06-24 | 858-758-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | EL CAJON | CA |
| 2021-06-24 | 858-758-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | EL CAJON | CA |
| 2021-06-24 | 858-758-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | EL CAJON | CA |
| 2021-06-24 | 858-758-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | EL CAJON | CA |
| 2021-06-23 | 858-308-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SNDG LVTA | CA |
| 2021-06-23 | 858-310-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | RNCHOSANFE | CA |
| 2021-06-23 | 858-313-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | DEL MAR | CA |
| 2021-06-23 | 858-800-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SNDG MRMS | CA |
| 2021-06-23 | 858-837-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | RNCHOPNQTS | CA |
| 2021-06-23 | 858-955-6XXX | 6000–6999 | Assigned | ONVOY SPECTRUM, LLC | 624H | PINEVALLEY | CA |
| 2021-06-17 | 858-588-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | RNCHOBRNDO | CA |
| 2021-06-17 | 858-588-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | RNCHOBRNDO | CA |
| 2021-06-07 | 858-868-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNDG SNDG | CA |
| 2021-06-04 | 858-477-7XXX | 7000–7999 | Assigned | FRACTEL, LLC | 965H | SNDG SNDG | CA |
| 2021-05-21 | 858-310-3XXX | 3000–3999 | Assigned | TWILIO INTERNATIONAL, INC. | 506J | RNCHOSANFE | CA |
| 2021-05-20 | 858-910-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | CHULAVISTA | CA |
| 2021-05-20 | 858-910-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | CHULAVISTA | CA |
| 2021-05-20 | 858-910-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | CHULAVISTA | CA |
| 2021-05-20 | 858-910-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | CHULAVISTA | CA |
| 2021-05-20 | 858-910-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | CHULAVISTA | CA |
| 2021-05-20 | 858-910-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | CHULAVISTA | CA |
| 2021-05-20 | 858-910-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | CHULAVISTA | CA |
| 2021-05-19 | 858-899-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | EL CAJON | CA |
| 2021-05-19 | 858-899-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | EL CAJON | CA |
| 2021-05-19 | 858-899-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | EL CAJON | CA |
| 2021-05-19 | 858-910-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | CHULAVISTA | CA |
| 2021-05-16 | 858-744-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | SNDG SNDG | CA |
| 2021-05-16 | 858-744-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | SNDG SNDG | CA |
| 2021-05-16 | 858-744-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | SNDG SNDG | CA |
| 2021-05-16 | 858-744-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | SNDG SNDG | CA |
| 2021-05-16 | 858-744-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | SNDG SNDG | CA |
| 2021-05-16 | 858-744-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | SNDG SNDG | CA |
| 2021-05-16 | 858-744-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | SNDG SNDG | CA |
| 2021-05-11 | 858-588-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | RNCHOBRNDO | CA |
| 2021-05-11 | 858-588-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | RNCHOBRNDO | CA |
| 2021-05-08 | 858-313-4XXX | 4000–4999 | Assigned | COMMIO, LLC | 939H | DEL MAR | CA |
| 2021-05-08 | 858-313-5XXX | 5000–5999 | Assigned | COMMIO, LLC | 939H | DEL MAR | CA |
| 2021-05-08 | 858-313-6XXX | 6000–6999 | Assigned | COMMIO, LLC | 939H | DEL MAR | 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.