NumberResearchThousands-blocks in 619-737
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/19/2026
The ten 1,000-number thousand-blocks inside prefix 619-737 and who was initially assigned each. Under pooling these blocks often belong to different carriers — the single prefix-level “assignee” is usually just the pool / code holder, not who holds the numbers. ← all 619 blocks
Most active assignees, all time — NPA 619
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 619-737-0XXX | 0000–0999 | Reserved | ONVOY, LLC - CA | 649C | CHULAVISTA | CA |
| — | 619-737-1XXX | 1000–1999 | Reserved | ONVOY, LLC - CA | 649C | CHULAVISTA | CA |
| 2012-05-22 | 619-737-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | CHULAVISTA | CA |
| 2011-09-09 | 619-737-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | CHULAVISTA | CA |
| — | 619-737-4XXX | 4000–4999 | Reserved | ONVOY, LLC - CA | 649C | CHULAVISTA | CA |
| 2012-02-07 | 619-737-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CHULAVISTA | CA |
| 2004-10-15 | 619-737-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | CHULAVISTA | CA |
| 2003-09-02 | 619-737-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CHULAVISTA | CA |
| 2004-05-06 | 619-737-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | CHULAVISTA | CA |
| 2004-05-06 | 619-737-9XXX | 9000–9999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | CHULAVISTA | CA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.