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 909
New assignments by month
Sep 2026
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2017-12-08 | 909-755-7XXX | 7000–7999 | Assigned | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | UPLAND | CA |
| 2016-06-17 | 909-601-3XXX | 3000–3999 | Assigned | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | S BERNDINO | CA |
| 2015-06-17 | 909-687-3XXX | 3000–3999 | Assigned | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | ONTARIO | CA |
| 2015-06-03 | 909-462-1XXX | 1000–1999 | Assigned | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | S BERNDINO | CA |
| 2014-09-15 | 909-328-5XXX | 5000–5999 | Assigned | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | REDLANDS | CA |
| 2013-08-23 | 909-378-7XXX | 7000–7999 | Assigned | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | DIAMONDBAR | CA |
| 2012-06-05 | 909-334-3XXX | 3000–3999 | Assigned | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | CHINO | CA |
| 2007-10-04 | 909-894-7XXX | 7000–7999 | Assigned | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | REDLANDS | CA |
| 2007-06-14 | 909-733-4XXX | 4000–4999 | Assigned | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | S BERNDINO | CA |
| 2007-05-24 | 909-244-5XXX | 5000–5999 | Assigned | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | UPLAND | CA |
| 2007-03-14 | 909-733-5XXX | 5000–5999 | Assigned | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | S BERNDINO | CA |
| 2007-02-05 | 909-204-3XXX | 3000–3999 | Assigned | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | UPLAND | CA |
| 2006-07-31 | 909-651-0XXX | 0000–0999 | Assigned | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | REDLANDS | CA |
| 2006-07-31 | 909-651-1XXX | 1000–1999 | Assigned | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | REDLANDS | CA |
| 2006-07-31 | 909-651-2XXX | 2000–2999 | Assigned | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | REDLANDS | CA |
| 2006-07-31 | 909-651-3XXX | 3000–3999 | Assigned | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | REDLANDS | CA |
| 2006-07-31 | 909-651-4XXX | 4000–4999 | Assigned | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | REDLANDS | CA |
| 2006-07-31 | 909-651-5XXX | 5000–5999 | Assigned | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | REDLANDS | CA |
| 2006-07-31 | 909-651-6XXX | 6000–6999 | Assigned | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | REDLANDS | CA |
| 2006-07-31 | 909-651-7XXX | 7000–7999 | Assigned | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | REDLANDS | CA |
| 2006-07-31 | 909-651-8XXX | 8000–8999 | Assigned | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | REDLANDS | CA |
| 2006-07-31 | 909-651-9XXX | 9000–9999 | Assigned | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | REDLANDS | CA |
| 2005-07-25 | 909-480-7XXX | 7000–7999 | Assigned | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | CLAREMONT | CA |
| 2000-12-10 | 909-867-8XXX | 8000–8999 | Assigned | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | RUNNINGSPG | 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.