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 |
|---|---|---|---|---|---|---|---|
| 2025-10-21 | 858-439-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | CHULAVISTA | CA |
| 2025-10-21 | 858-439-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | CHULAVISTA | CA |
| 2025-10-21 | 858-439-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | CHULAVISTA | CA |
| 2025-10-21 | 858-443-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | CHULAVISTA | CA |
| 2025-10-16 | 858-224-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | LA JOLLA | CA |
| 2025-10-16 | 858-418-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | SNDG SNDG | CA |
| 2025-10-16 | 858-418-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | SNDG SNDG | CA |
| 2025-10-16 | 858-426-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | EL CAJON | CA |
| 2025-10-16 | 858-439-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | CHULAVISTA | CA |
| 2025-10-16 | 858-439-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | CHULAVISTA | CA |
| 2025-10-16 | 858-441-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | EL CAJON | CA |
| 2025-10-16 | 858-828-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | SNDG SNDG | CA |
| 2025-10-07 | 858-925-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | DEL MAR | CA |
| 2025-10-03 | 858-944-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | SNDG LVTA | CA |
| 2025-10-02 | 858-426-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | EL CAJON | CA |
| 2025-10-02 | 858-426-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | EL CAJON | CA |
| 2025-10-02 | 858-439-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | CHULAVISTA | CA |
| 2025-09-25 | 858-288-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | SNDG MRMS | CA |
| 2025-09-25 | 858-322-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | SNDG MRMS | CA |
| 2025-09-16 | 858-426-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | EL CAJON | CA |
| 2025-09-16 | 858-426-6XXX | 6000–6999 | Assigned | ONVOY SPECTRUM, LLC | 624H | EL CAJON | CA |
| 2025-09-15 | 858-860-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | SNDG MRMS | CA |
| 2025-09-03 | 858-707-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | SNDG LVTA | CA |
| 2025-08-22 | 858-440-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LA MESA | CA |
| 2025-08-13 | 858-564-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | SNDG MRMS | CA |
| 2025-08-11 | 858-368-5XXX | 5000–5999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7147 | SNDG MRMS | CA |
| 2025-08-05 | 858-384-9XXX | 9000–9999 | Assigned | WAVENATION, LLC | 700J | SNDG LVTA | CA |
| 2025-07-23 | 858-417-5XXX | 5000–5999 | Assigned | TELNYX LLC | 073H | NATIONALCY | CA |
| 2025-06-11 | 858-439-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CHULAVISTA | CA |
| 2025-06-11 | 858-439-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CHULAVISTA | CA |
| 2025-06-11 | 858-439-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CHULAVISTA | CA |
| 2025-05-16 | 858-902-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CHULAVISTA | CA |
| 2025-05-16 | 858-902-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CHULAVISTA | CA |
| 2025-05-16 | 858-902-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CHULAVISTA | CA |
| 2025-05-16 | 858-902-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CHULAVISTA | CA |
| 2025-05-06 | 858-426-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | EL CAJON | CA |
| 2025-05-06 | 858-426-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | EL CAJON | CA |
| 2025-04-17 | 858-376-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | RNCHOBRNDO | CA |
| 2025-04-16 | 858-275-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | SNDG MRMS | CA |
| 2025-04-16 | 858-275-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | SNDG MRMS | CA |
| 2025-04-08 | 858-338-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | HARBSNALPN | CA |
| 2025-04-08 | 858-426-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | EL CAJON | CA |
| 2025-04-07 | 858-416-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LA MESA | CA |
| 2025-04-07 | 858-416-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LA MESA | CA |
| 2025-04-07 | 858-416-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LA MESA | CA |
| 2025-03-07 | 858-325-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SNDG LVTA | CA |
| 2025-02-27 | 858-425-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SNDG SNDG | CA |
| 2025-02-27 | 858-425-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SNDG SNDG | CA |
| 2025-01-28 | 858-423-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SNDG SNDG | CA |
| 2025-01-28 | 858-423-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SNDG SNDG | 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.