NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026
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
Aug 2026
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Jun 2026
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Apr 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2016-09-21 | 619-436-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SNDG SNDG | CA |
| 2016-08-24 | 619-601-9XXX | 9000–9999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CHULAVISTA | CA |
| 2016-08-12 | 619-693-9XXX | 9000–9999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SNDG SNDG | CA |
| 2016-08-12 | 619-844-0XXX | 0000–0999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SNDG SNDG | CA |
| 2016-05-04 | 619-621-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CHULAVISTA | CA |
| 2016-04-27 | 619-343-1XXX | 1000–1999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SNDG SNDG | CA |
| 2016-03-08 | 619-724-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | LA MESA | CA |
| 2016-03-02 | 619-332-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | EL CAJON | CA |
| 2015-10-13 | 619-693-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SNDG SNDG | CA |
| 2015-06-11 | 619-738-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SNDG SNDG | CA |
| 2014-11-26 | 619-642-0XXX | 0000–0999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SNDG SNDG | CA |
| 2014-10-01 | 619-576-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CHULAVISTA | CA |
| 2014-08-06 | 619-431-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SNDG SNDG | CA |
| 2014-06-26 | 619-825-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | LA MESA | CA |
| 2014-06-13 | 619-457-0XXX | 0000–0999 | Assigned | AT&T ENTERPRISES, LLC | 516C | EL CAJON | CA |
| 2014-05-14 | 619-882-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CHULAVISTA | CA |
| 2014-04-22 | 619-458-9XXX | 9000–9999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SNDG SNDG | CA |
| 2014-04-01 | 619-512-1XXX | 1000–1999 | Assigned | AT&T ENTERPRISES, LLC | 516C | NATIONALCY | CA |
| 2012-02-07 | 619-737-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CHULAVISTA | CA |
| 2011-09-14 | 619-350-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | JACUMBA | CA |
| 2011-09-14 | 619-478-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CAMPO | CA |
| 2011-09-14 | 619-842-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | PINEVALLEY | CA |
| 2011-08-31 | 619-230-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SNDG SNDG | CA |
| 2011-08-16 | 619-825-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | LA MESA | CA |
| 2011-07-13 | 619-631-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | EL CAJON | CA |
| 2011-06-20 | 619-826-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | DULZURA | CA |
| 2011-01-14 | 619-500-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CHULAVISTA | CA |
| 2010-12-28 | 619-326-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SNDG SNDG | CA |
| 2010-04-01 | 619-816-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CHULAVISTA | CA |
| 2010-03-10 | 619-542-9XXX | 9000–9999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SNDG SNDG | CA |
| 2009-06-26 | 619-892-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SNDG SNDG | CA |
| 2009-06-12 | 619-863-0XXX | 0000–0999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CHULAVISTA | CA |
| 2006-11-01 | 619-722-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | HARBSNALPN | CA |
| 2006-06-12 | 619-947-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CHULAVISTA | CA |
| 2006-02-06 | 619-773-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | NATIONALCY | CA |
| 2006-02-06 | 619-996-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CORONADO | CA |
| 2006-01-26 | 619-467-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | LA MESA | CA |
| 2005-06-23 | 619-938-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | EL CAJON | 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.