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 |
|---|---|---|---|---|---|---|---|
| 2022-04-12 | 831-705-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | CHUALAR | CA |
| 2022-04-12 | 831-837-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7145 | SALINAS | CA |
| 2022-04-12 | 831-946-7XXX | 7000–7999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7145 | SANTA CRUZ | CA |
| 2022-04-11 | 831-837-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SALINAS | CA |
| 2022-04-11 | 831-837-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SALINAS | CA |
| 2022-04-11 | 831-837-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SALINAS | CA |
| 2022-04-06 | 831-219-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | APTOS | CA |
| 2022-03-25 | 831-587-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | WATSONVL | CA |
| 2022-03-25 | 831-946-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA CRUZ | CA |
| 2022-03-25 | 831-946-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA CRUZ | CA |
| 2022-03-24 | 831-260-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | SOLEDAD | CA |
| 2022-03-24 | 831-260-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | SOLEDAD | CA |
| 2022-03-15 | 831-260-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SOLEDAD | CA |
| 2022-03-15 | 831-667-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BIG SUR | CA |
| 2022-03-15 | 831-675-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | GONZALES | CA |
| 2022-03-15 | 831-850-5XXX | 5000–5999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | FELTON | CA |
| 2022-03-04 | 831-215-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | MONTEREY | CA |
| 2022-03-04 | 831-282-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | MONTEREY | CA |
| 2022-03-04 | 831-282-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | MONTEREY | CA |
| 2022-02-24 | 831-833-3XXX | 3000–3999 | Assigned | COMMIO, LLC | 939H | HOLLISTER | CA |
| 2022-02-23 | 831-232-7XXX | 7000–7999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | CHUALAR | CA |
| 2022-02-23 | 831-366-6XXX | 6000–6999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | BOULDERCRK | CA |
| 2022-02-16 | 831-867-7XXX | 7000–7999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | MONTEREY | CA |
| 2022-02-09 | 831-842-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | APTOS | CA |
| 2022-02-09 | 831-842-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | APTOS | CA |
| 2022-02-04 | 831-677-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | SOLEDAD | CA |
| 2022-01-31 | 831-220-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | MONTEREY | CA |
| 2022-01-31 | 831-230-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | MONTEREY | CA |
| 2022-01-31 | 831-401-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | BEN LOMOND | CA |
| 2022-01-19 | 831-717-9XXX | 9000–9999 | Assigned | TWILIO INTERNATIONAL, INC. | 506J | MONTEREY | CA |
| 2022-01-15 | 831-837-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | SALINAS | CA |
| 2022-01-14 | 831-705-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | CHUALAR | CA |
| 2022-01-10 | 831-837-4XXX | 4000–4999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | SALINAS | CA |
| 2022-01-09 | 831-432-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | BOULDERCRK | CA |
| 2022-01-09 | 831-432-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | BOULDERCRK | CA |
| 2022-01-09 | 831-432-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | BOULDERCRK | CA |
| 2021-12-29 | 831-778-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | SAN LUCAS | CA |
| 2021-12-28 | 831-271-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | HOLLISTER | CA |
| 2021-12-28 | 831-271-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | HOLLISTER | CA |
| 2021-12-28 | 831-301-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | SAN JUAN | CA |
| 2021-12-28 | 831-308-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | CARMEL VLY | CA |
| 2021-12-28 | 831-593-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | SAN JUAN | CA |
| 2021-11-21 | 831-842-5XXX | 5000–5999 | Assigned | FRACTEL, LLC | 965H | APTOS | CA |
| 2021-11-15 | 831-304-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | GREENFIELD | CA |
| 2021-11-15 | 831-304-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | GREENFIELD | CA |
| 2021-11-15 | 831-699-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FELTON | CA |
| 2021-11-15 | 831-699-4XXX | 4000–4999 | Assigned | ONVOY SPECTRUM, LLC | 624H | FELTON | CA |
| 2021-11-08 | 831-305-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | GONZALES | CA |
| 2021-11-05 | 831-301-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | SAN JUAN | CA |
| 2021-11-05 | 831-301-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | SAN JUAN | 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.