NumberResearchRecent thousands-block assignments
24 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 530
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 |
|---|---|---|---|---|---|---|---|
| 2017-07-24 | 530-256-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | WESTWOOD | CA |
| 2017-07-24 | 530-281-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | KEDDIE | CA |
| 2017-07-24 | 530-284-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | GREENVILLE | CA |
| 2017-07-24 | 530-294-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | BIEBER | CA |
| 2017-07-24 | 530-299-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | ADIN | CA |
| 2017-07-24 | 530-335-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | BURNEY | CA |
| 2017-07-24 | 530-336-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | FALLRVRMLS | CA |
| 2017-07-24 | 530-569-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | CEDARVILLE | CA |
| 2017-07-24 | 530-595-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | MINERAL | CA |
| 2017-07-24 | 530-596-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | LK ALMANOR | CA |
| 2017-07-24 | 530-708-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | ALTURAS | CA |
| 2017-07-24 | 530-816-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | CHESTER | CA |
| 2017-07-24 | 530-825-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | EAGLE LAKE | CA |
| 2017-07-24 | 530-827-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | HERLONG | CA |
| 2017-07-21 | 530-253-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | JANESVILLE | CA |
| 2017-07-11 | 530-543-9XXX | 9000–9999 | Assigned | UTILITY TELECOM GROUP, LLC - CA | 9262 | SOUTHTAHOE | CA |
| 2017-06-29 | 530-782-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | REDDING | CA |
| 2017-06-27 | 530-407-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ANDERSON | CA |
| 2017-06-27 | 530-407-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ANDERSON | CA |
| 2017-06-27 | 530-407-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ANDERSON | CA |
| 2017-06-27 | 530-602-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | RED BLUFF | CA |
| 2017-06-26 | 530-419-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WOODLAND | CA |
| 2017-06-15 | 530-319-3XXX | 3000–3999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | REDDING | CA |
| 2017-06-13 | 530-384-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | LOSMOLINOS | CA |
| 2017-06-06 | 530-768-5XXX | 5000–5999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | REDDING | CA |
| 2017-06-05 | 530-962-6XXX | 6000–6999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SHASTALAKE | CA |
| 2017-05-24 | 530-684-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | MONTAGUE | CA |
| 2017-05-16 | 530-631-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | WOODLAND | CA |
| 2017-05-16 | 530-771-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | DAVIS | CA |
| 2017-05-15 | 530-479-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | VERDI | CA |
| 2017-05-12 | 530-772-3XXX | 3000–3999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | CHALLENGE | CA |
| 2017-05-11 | 530-578-1XXX | 1000–1999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | SOUTHTAHOE | CA |
| 2017-05-11 | 530-578-2XXX | 2000–2999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | SOUTHTAHOE | CA |
| 2017-04-20 | 530-767-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | CHICO | CA |
| 2017-04-20 | 530-767-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | CHICO | CA |
| 2017-04-20 | 530-767-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | CHICO | CA |
| 2017-04-20 | 530-767-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | CHICO | CA |
| 2017-04-20 | 530-767-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | CHICO | CA |
| 2017-04-20 | 530-767-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | CHICO | CA |
| 2017-04-20 | 530-767-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | CHICO | CA |
| 2017-04-20 | 530-767-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | CHICO | CA |
| 2017-04-20 | 530-767-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | CHICO | CA |
| 2017-04-14 | 530-319-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | REDDING | CA |
| 2017-04-14 | 530-322-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | PORTOLA | CA |
| 2017-04-14 | 530-394-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | QUINCY | CA |
| 2017-04-14 | 530-424-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | VINA | CA |
| 2017-04-14 | 530-486-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | STONYFORD | CA |
| 2017-04-14 | 530-489-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HOMEWOOD | CA |
| 2017-04-14 | 530-568-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | MT SHASTA | CA |
| 2017-04-14 | 530-572-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | YREKA | 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.