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 630
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2014-09-19 | 630-828-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | HINSDALE | IL |
| 2014-07-08 | 630-692-9XXX | 9000–9999 | Assigned | AT&T ENTERPRISES, LLC | 516C | AURORA | IL |
| 2014-04-30 | 630-453-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | NAPERVILLE | IL |
| 2011-08-25 | 630-433-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ELMHURST | IL |
| 2011-05-19 | 630-556-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BIG ROCK | IL |
| 2010-06-18 | 630-486-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | AURORA | IL |
| 2006-11-21 | 630-708-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | YORKVILLE | IL |
| 2006-11-02 | 630-273-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | PLANO | IL |
| 2006-11-02 | 630-447-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | WARRENVL | IL |
| 2006-11-02 | 630-777-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SUGARGROVE | IL |
| 2006-11-01 | 630-636-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | OSWEGO | IL |
| 2006-11-01 | 630-934-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ELBURN | IL |
| 2006-06-14 | 630-297-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | DOWNERSGRV | IL |
| 2006-04-28 | 630-754-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | LEMONT | IL |
| 2006-03-09 | 630-625-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ITASCA | IL |
| 2006-03-09 | 630-797-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ST CHARLES | IL |
| 2006-03-08 | 630-457-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | GENEVA | IL |
| 2006-03-08 | 630-937-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BATAVIA | IL |
| 2006-03-08 | 630-974-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | HINSDALE | IL |
| 2006-02-03 | 630-206-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | W CHICAGO | IL |
| 2006-02-03 | 630-765-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | WHEATON | IL |
| 2006-02-03 | 630-785-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | LOMBARD | IL |
| 2005-11-22 | 630-793-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | GLEN ELLYN | IL |
| 2005-08-18 | 630-907-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | AURORA | IL |
| 2005-07-12 | 630-857-9XXX | 9000–9999 | Assigned | AT&T ENTERPRISES, LLC | 516C | NAPERVILLE | IL |
| 2005-04-22 | 630-903-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ELMHURST | IL |
| 2005-04-05 | 630-422-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BENSENVL | IL |
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.