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 619
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2018-08-10 | 619-915-2XXX | 2000–2999 | Assigned | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | SNDG SNDG | CA |
| 2001-12-06 | 619-473-6XXX | 6000–6999 | Assigned | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | PINEVALLEY | CA |
| 2001-12-06 | 619-478-8XXX | 8000–8999 | Assigned | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | CAMPO | CA |
| 2001-12-06 | 619-766-8XXX | 8000–8999 | Assigned | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | JACUMBA | 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.