NumberResearchRecent thousands-block assignments
0 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, all time — NPA 310
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2017-06-28 | 310-620-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | BEVERLYHLS | CA |
| 2016-10-18 | 310-945-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | CULVERCITY | CA |
| 2014-06-26 | 310-484-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | INGLEWOOD | CA |
| 2014-04-10 | 310-692-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | INGLEWOOD | CA |
| 2014-03-31 | 310-439-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNMN MRVS | CA |
| 2014-03-31 | 310-651-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | BEVERLYHLS | CA |
| 2013-06-20 | 310-896-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | REDONDO | CA |
| 2013-05-28 | 310-504-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | REDONDO | CA |
| 2013-05-24 | 310-499-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | BEVERLYHLS | CA |
| 2013-02-07 | 310-919-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | MALIBU | CA |
| 2013-01-24 | 310-596-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | CULVERCITY | CA |
| 2012-12-19 | 310-627-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | CMTN CMTN | CA |
| 2012-12-19 | 310-879-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | CMTN GRDN | CA |
| 2012-12-14 | 310-307-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | W ANGELES | CA |
| 2012-12-14 | 310-906-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | EL SEGUNDO | CA |
| 2012-10-17 | 310-596-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | CULVERCITY | CA |
| 2012-10-12 | 310-299-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | BEVERLYHLS | CA |
| 2012-10-12 | 310-299-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | BEVERLYHLS | CA |
| 2012-09-20 | 310-494-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | MALIBU | CA |
| 2012-08-13 | 310-299-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | BEVERLYHLS | CA |
| 2012-05-23 | 310-912-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | INGLEWOOD | CA |
| 2012-05-23 | 310-945-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | CULVERCITY | CA |
| 2012-02-29 | 310-494-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | MALIBU | CA |
| 2011-11-30 | 310-507-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SAN PEDRO | CA |
| 2011-09-16 | 310-912-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | INGLEWOOD | CA |
| 2011-03-14 | 310-935-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SAN PEDRO | CA |
| 2011-03-08 | 310-321-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | EL SEGUNDO | CA |
| 2011-02-28 | 310-331-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | HAWTHORNE | CA |
| 2011-02-28 | 310-359-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | MALIBU | CA |
| 2011-02-28 | 310-405-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | W ANGELES | CA |
| 2011-02-28 | 310-776-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNMN MRVS | CA |
| 2011-02-15 | 310-400-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | CMTN GRDN | CA |
| 2010-08-06 | 310-461-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | BEVERLYHLS | CA |
| 2008-02-08 | 310-740-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNMN MRVS | CA |
| 2008-02-04 | 310-776-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNMN MRVS | CA |
| 2008-02-01 | 310-341-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | EL SEGUNDO | CA |
| 2008-01-17 | 310-954-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | W ANGELES | CA |
| 2007-10-17 | 310-751-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNMN MRVS | CA |
| 2007-09-26 | 310-751-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNMN MRVS | CA |
| 2006-11-21 | 310-661-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | CMTN CMTN | CA |
| 2006-11-09 | 310-574-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNMN MRVS | CA |
| 2006-09-28 | 310-651-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | BEVERLYHLS | CA |
| 2006-09-07 | 310-243-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | CMTN GRDN | CA |
| 2006-09-07 | 310-594-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | CMTN GRDN | CA |
| 2006-09-07 | 310-594-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | CMTN GRDN | CA |
| 2006-09-07 | 310-594-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | CMTN GRDN | CA |
| 2006-09-07 | 310-660-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | CMTN GRDN | CA |
| 2006-09-07 | 310-715-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | CMTN GRDN | CA |
| 2006-08-31 | 310-881-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SNMN MRVS | CA |
| 2006-08-01 | 310-765-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | EL SEGUNDO | 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.