NumberResearchRecent thousands-block assignments
13 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, last 30 days — NPA 831
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 |
|---|---|---|---|---|---|---|---|
| 2024-06-12 | 831-294-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SALINAS | CA |
| 2024-06-12 | 831-294-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SALINAS | CA |
| 2024-06-11 | 831-281-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA CRUZ | CA |
| 2024-06-11 | 831-281-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA CRUZ | CA |
| 2024-06-11 | 831-281-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | SANTA CRUZ | CA |
| 2024-06-05 | 831-312-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | MONTEREY | CA |
| 2024-05-15 | 831-330-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | CARMEL | CA |
| 2024-05-15 | 831-453-3XXX | 3000–3999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | CASTROVL | CA |
| 2024-04-29 | 831-689-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | APTOS | CA |
| 2024-04-22 | 831-294-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SALINAS | CA |
| 2024-04-22 | 831-294-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SALINAS | CA |
| 2024-04-22 | 831-883-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | MONTEREY | CA |
| 2024-04-22 | 831-884-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | MONTEREY | CA |
| 2024-04-10 | 831-583-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MONTEREY | CA |
| 2024-04-08 | 831-312-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MONTEREY | CA |
| 2024-03-27 | 831-294-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SALINAS | CA |
| 2024-03-27 | 831-294-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SALINAS | CA |
| 2024-03-27 | 831-294-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SALINAS | CA |
| 2024-03-27 | 831-294-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SALINAS | CA |
| 2024-03-26 | 831-312-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | MONTEREY | CA |
| 2024-03-25 | 831-281-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | SANTA CRUZ | CA |
| 2024-03-25 | 831-294-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SALINAS | CA |
| 2024-03-21 | 831-286-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | GREENFIELD | CA |
| 2024-03-06 | 831-931-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | KING CITY | CA |
| 2024-03-01 | 831-302-4XXX | 4000–4999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | SAN LUCAS | CA |
| 2024-03-01 | 831-303-4XXX | 4000–4999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | SAN ARDO | CA |
| 2024-02-27 | 831-281-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA CRUZ | CA |
| 2024-02-13 | 831-305-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | GONZALES | CA |
| 2024-02-13 | 831-305-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | GONZALES | CA |
| 2024-02-01 | 831-931-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | KING CITY | CA |
| 2024-01-30 | 831-833-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | HOLLISTER | CA |
| 2024-01-29 | 831-330-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CARMEL | CA |
| 2024-01-24 | 831-270-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | SALINAS | CA |
| 2024-01-24 | 831-270-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | SALINAS | CA |
| 2024-01-24 | 831-270-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | SALINAS | CA |
| 2024-01-24 | 831-270-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | SALINAS | CA |
| 2024-01-23 | 831-230-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | MONTEREY | CA |
| 2024-01-23 | 831-259-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | MONTEREY | CA |
| 2024-01-23 | 831-259-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | MONTEREY | CA |
| 2024-01-23 | 831-747-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | MONTEREY | CA |
| 2024-01-16 | 831-665-0XXX | 0000–0999 | Assigned | TERRA NOVA TELECOM INC. | 145J | HOLLISTER | CA |
| 2024-01-16 | 831-821-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | TRES PINOS | CA |
| 2024-01-03 | 831-281-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SANTA CRUZ | CA |
| 2024-01-03 | 831-281-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SANTA CRUZ | CA |
| 2024-01-03 | 831-281-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | SANTA CRUZ | CA |
| 2024-01-02 | 831-259-3XXX | 3000–3999 | Assigned | COMMIO, LLC | 939H | MONTEREY | CA |
| 2024-01-02 | 831-259-9XXX | 9000–9999 | Assigned | COMMIO, LLC | 939H | MONTEREY | CA |
| 2024-01-02 | 831-270-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | SALINAS | CA |
| 2024-01-02 | 831-270-8XXX | 8000–8999 | Assigned | COMMIO, LLC | 939H | SALINAS | CA |
| 2023-12-21 | 831-808-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SOLEDAD | 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.