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 217
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2025-09-18 | 217-640-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | QUINCY | IL |
| 2025-09-16 | 217-885-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BURTON | IL |
| 2014-06-10 | 217-210-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SPRINGFLD | IL |
| 2012-11-08 | 217-501-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | PETERSBURG | IL |
| 2011-10-24 | 217-207-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ST JOSEPH | IL |
| 2011-10-18 | 217-267-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | WESTVILLE | IL |
| 2011-10-18 | 217-354-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | OAKWOOD | IL |
| 2011-10-13 | 217-662-0XXX | 0000–0999 | Assigned | AT&T ENTERPRISES, LLC | 516C | GEORGETOWN | IL |
| 2011-10-13 | 217-680-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | GIBSONCITY | IL |
| 2011-09-19 | 217-487-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CANTRALL | IL |
| 2011-09-19 | 217-629-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | RIVERTON | IL |
| 2011-07-29 | 217-666-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | WEST DANA | IL |
| 2010-12-08 | 217-203-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BUFFALO | IL |
| 2010-12-07 | 217-212-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | FITHIAN | IL |
| 2009-12-07 | 217-393-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CATLIN | IL |
| 2009-12-07 | 217-952-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATHENS | IL |
| 2008-12-10 | 217-274-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | DANVILLE | IL |
| 2008-11-07 | 217-574-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | FAIRMOUNT | IL |
| 2008-11-07 | 217-576-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ROCHESTER | IL |
| 2006-01-13 | 217-706-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | DECATUR | IL |
| 2005-04-19 | 217-552-1XXX | 1000–1999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CHAMPAURBN | IL |
| 2005-04-19 | 217-572-1XXX | 1000–1999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SPRINGFLD | IL |
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.