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
New assignments by month
Sep 2026
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2015-12-23 | 619-731-3XXX | 3000–3999 | Assigned | PACIFIC BELL | 9740 | NATIONALCY | CA |
| 2007-07-23 | 619-537-1XXX | 1000–1999 | Assigned | PACIFIC BELL | 9740 | CORONADO | CA |
| 2007-07-23 | 619-537-2XXX | 2000–2999 | Assigned | PACIFIC BELL | 9740 | CORONADO | CA |
| 2007-07-23 | 619-537-3XXX | 3000–3999 | Assigned | PACIFIC BELL | 9740 | CORONADO | CA |
| 2007-07-23 | 619-537-4XXX | 4000–4999 | Assigned | PACIFIC BELL | 9740 | CORONADO | CA |
| 2007-07-23 | 619-537-5XXX | 5000–5999 | Assigned | PACIFIC BELL | 9740 | CORONADO | CA |
| 2006-09-14 | 619-502-3XXX | 3000–3999 | Assigned | PACIFIC BELL | 9740 | CHULAVISTA | CA |
| 2006-09-14 | 619-502-4XXX | 4000–4999 | Assigned | PACIFIC BELL | 9740 | CHULAVISTA | CA |
| 2006-09-14 | 619-502-5XXX | 5000–5999 | Assigned | PACIFIC BELL | 9740 | CHULAVISTA | CA |
| 2006-09-14 | 619-502-6XXX | 6000–6999 | Assigned | PACIFIC BELL | 9740 | CHULAVISTA | CA |
| 2006-09-14 | 619-502-8XXX | 8000–8999 | Assigned | PACIFIC BELL | 9740 | CHULAVISTA | CA |
| 2002-10-25 | 619-710-4XXX | 4000–4999 | Assigned | PACIFIC BELL | 9740 | CHULAVISTA | CA |
| 2002-07-31 | 619-591-4XXX | 4000–4999 | Assigned | PACIFIC BELL | 9740 | CHULAVISTA | CA |
| 2002-07-31 | 619-591-5XXX | 5000–5999 | Assigned | PACIFIC BELL | 9740 | CHULAVISTA | CA |
| 2002-07-31 | 619-690-7XXX | 7000–7999 | Assigned | PACIFIC BELL | 9740 | CHULAVISTA | CA |
| 2002-05-16 | 619-591-7XXX | 7000–7999 | Assigned | PACIFIC BELL | 9740 | CHULAVISTA | CA |
| 2002-02-13 | 619-768-4XXX | 4000–4999 | Assigned | PACIFIC BELL | 9740 | EL CAJON | 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.