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 413
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 |
|---|---|---|---|---|---|---|---|
| 2011-08-08 | 413-749-8XXX | 8000–8999 | Assigned | RINGSQUARED TELECOM LLC | 311D | ADAMS | MA |
| 2011-01-06 | 413-526-3XXX | 3000–3999 | Assigned | RINGSQUARED TELECOM LLC | 311D | ELONGMEDOW | MA |
| 2010-11-24 | 413-344-1XXX | 1000–1999 | Assigned | RINGSQUARED TELECOM LLC | 311D | PITTSFIELD | MA |
| 2010-10-18 | 413-588-3XXX | 3000–3999 | Assigned | RINGSQUARED TELECOM LLC | 311D | NORTHAMPTN | MA |
| 2009-04-30 | 413-285-1XXX | 1000–1999 | Assigned | RINGSQUARED TELECOM LLC | 311D | SPRINGFLD | MA |
| 2009-03-03 | 413-223-4XXX | 4000–4999 | Assigned | RINGSQUARED TELECOM LLC | 3849 | GREENFIELD | MA |
| 2009-03-03 | 413-662-8XXX | 8000–8999 | Assigned | RINGSQUARED TELECOM LLC | 3849 | NORTHADAMS | MA |
| 2009-03-03 | 413-884-8XXX | 8000–8999 | Assigned | RINGSQUARED TELECOM LLC | 3849 | WILLIAMSTN | MA |
| 2005-10-03 | 413-429-8XXX | 8000–8999 | Assigned | RINGSQUARED TELECOM LLC | 3849 | GREATBNGTN | MA |
| 2004-06-29 | 413-728-8XXX | 8000–8999 | Assigned | RINGSQUARED TELECOM LLC | 3849 | LENOX | MA |
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.