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 210
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2016-10-12 | 210-642-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SANANTONIO | TX |
| 2016-10-12 | 210-642-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SANANTONIO | TX |
| 2016-10-12 | 210-642-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SANANTONIO | TX |
| 2016-06-27 | 210-966-0XXX | 0000–0999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SANANTONIO | TX |
| 2016-06-27 | 210-994-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SANANTONIO | TX |
| 2016-06-27 | 210-994-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SANANTONIO | TX |
| 2016-05-17 | 210-943-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SANANTONIO | TX |
| 2015-07-01 | 210-971-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SANANTONIO | TX |
| 2015-07-01 | 210-971-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SANANTONIO | TX |
| 2015-07-01 | 210-971-9XXX | 9000–9999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SANANTONIO | TX |
| 2015-03-12 | 210-988-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SANANTONIO | TX |
| 2015-03-12 | 210-988-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SANANTONIO | TX |
| 2015-01-15 | 210-994-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SANANTONIO | TX |
| 2015-01-15 | 210-994-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SANANTONIO | TX |
| 2015-01-15 | 210-994-9XXX | 9000–9999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SANANTONIO | TX |
| 2014-09-26 | 210-973-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SANANTONIO | TX |
| 2014-09-26 | 210-973-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SANANTONIO | TX |
| 2014-09-26 | 210-973-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SANANTONIO | TX |
| 2014-08-06 | 210-758-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SANANTONIO | TX |
| 2014-04-09 | 210-503-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SANANTONIO | TX |
| 2013-12-27 | 210-263-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SANANTONIO | TX |
| 2012-01-13 | 210-776-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SANANTONIO | TX |
| 2011-07-14 | 210-598-9XXX | 9000–9999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SANANTONIO | TX |
| 2011-04-04 | 210-701-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SANANTONIO | TX |
| 2011-01-31 | 210-560-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SANANTONIO | TX |
| 2010-09-14 | 210-239-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SANANTONIO | TX |
| 2010-08-06 | 210-239-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SANANTONIO | TX |
| 2010-06-29 | 210-908-9XXX | 9000–9999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SANANTONIO | TX |
| 2010-04-29 | 210-468-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SANANTONIO | TX |
| 2010-02-04 | 210-468-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SANANTONIO | TX |
| 2010-02-04 | 210-468-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SANANTONIO | TX |
| 2009-12-16 | 210-957-0XXX | 0000–0999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SANANTONIO | TX |
| 2009-11-03 | 210-957-1XXX | 1000–1999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SANANTONIO | TX |
| 2009-06-04 | 210-338-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SANANTONIO | TX |
| 2009-06-04 | 210-757-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SANANTONIO | TX |
| 2009-04-14 | 210-475-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SANANTONIO | TX |
| 2008-12-12 | 210-474-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SANANTONIO | TX |
| 2008-10-08 | 210-384-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SANANTONIO | TX |
| 2007-06-20 | 210-451-1XXX | 1000–1999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SANANTONIO | TX |
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.