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 209
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2016-09-14 | 209-641-0XXX | 0000–0999 | Assigned | AT&T ENTERPRISES, LLC | 516C | STOCKTON | CA |
| 2016-07-07 | 209-287-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | MODESTO | CA |
| 2015-05-18 | 209-455-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | MERCED | CA |
| 2015-04-20 | 209-452-0XXX | 0000–0999 | Assigned | AT&T ENTERPRISES, LLC | 516C | LODI | CA |
| 2015-03-18 | 209-949-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | STOCKTON | CA |
| 2014-10-09 | 209-284-0XXX | 0000–0999 | Assigned | AT&T ENTERPRISES, LLC | 516C | MODESTO | CA |
| 2014-08-28 | 209-850-9XXX | 9000–9999 | Assigned | AT&T ENTERPRISES, LLC | 516C | TURLOCK | CA |
| 2014-07-23 | 209-851-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | STOCKTON | CA |
| 2014-04-14 | 209-857-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | MODESTO | CA |
| 2014-03-25 | 209-666-1XXX | 1000–1999 | Assigned | AT&T ENTERPRISES, LLC | 516C | TRACY | CA |
| 2013-11-06 | 209-910-0XXX | 0000–0999 | Assigned | AT&T ENTERPRISES, LLC | 516C | STOCKTON | CA |
| 2012-12-18 | 209-248-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | MODESTO | CA |
| 2012-04-30 | 209-910-9XXX | 9000–9999 | Assigned | AT&T ENTERPRISES, LLC | 516C | STOCKTON | CA |
| 2011-12-23 | 209-317-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | COULTERVL | CA |
| 2011-08-15 | 209-837-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CROWS LDG | CA |
| 2011-07-28 | 209-375-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | YOSEMITE | CA |
| 2011-07-28 | 209-443-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | WALLACE | CA |
| 2011-07-28 | 209-734-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | HERALD | CA |
| 2011-07-28 | 209-796-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | THORNTON | CA |
| 2011-07-28 | 209-917-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | LE GRAND | CA |
| 2011-07-28 | 209-962-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | GROVELAND | CA |
| 2011-06-15 | 209-790-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | IONE | CA |
| 2011-06-08 | 209-256-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | JACKSON | CA |
| 2011-06-08 | 209-439-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | PLANADA | CA |
| 2011-06-08 | 209-560-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SUTTER CRK | CA |
| 2011-06-08 | 209-584-9XXX | 9000–9999 | Assigned | AT&T ENTERPRISES, LLC | 516C | VALLEY SPG | CA |
| 2011-06-08 | 209-674-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SANANDREAS | CA |
| 2011-06-08 | 209-733-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | GUSTINE | CA |
| 2011-06-08 | 209-782-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | JAMESTOWN | CA |
| 2011-06-08 | 209-788-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | MILTON | CA |
| 2011-06-08 | 209-797-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | LOCKEFORD | CA |
| 2011-06-08 | 209-862-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | NEWMAN | CA |
| 2011-06-08 | 209-927-9XXX | 9000–9999 | Assigned | AT&T ENTERPRISES, LLC | 516C | MOCCASIN | CA |
| 2011-04-26 | 209-893-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | PLYMOUTH | CA |
| 2010-04-14 | 209-567-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | MODESTO | CA |
| 2010-04-07 | 209-227-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | STOCKTON | CA |
| 2010-04-07 | 209-597-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | TRACY | CA |
| 2009-12-14 | 209-813-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ANGELSCAMP | CA |
| 2008-08-07 | 209-542-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | HUGHSON | CA |
| 2008-08-07 | 209-691-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ESCALON | CA |
| 2008-08-07 | 209-844-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | OAKDALE | CA |
| 2007-08-09 | 209-286-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | MOKELUMNHL | CA |
| 2007-08-09 | 209-626-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | MERCED | CA |
| 2007-08-09 | 209-694-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SNRA MAIN | CA |
| 2007-08-09 | 209-710-9XXX | 9000–9999 | Assigned | AT&T ENTERPRISES, LLC | 516C | LOS BANOS | CA |
| 2007-08-09 | 209-812-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATWATER | CA |
| 2007-08-09 | 209-852-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | WTFR DNPR | CA |
| 2007-08-09 | 209-853-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | WTFR MAIN | CA |
| 2007-08-09 | 209-863-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | RIVERBANK | CA |
| 2007-08-09 | 209-912-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | GALT | 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.