This period saw 6,967 new domains added and 11,631 removed from major block lists. Steven Black Unified Hosts led the activity, with over 13,000 changes. EasyList, AdGuard DNS Filter, and AdGuard Base Filter also logged heavy churn. Now, on to the details that matter.
123-stream.org: Fastest Block-and-Unblock This Month
123-stream.org set a new speed record for whiplash. It was added to EasyList and AdGuard Base Filter on July 7, then removed from both the same day. For analytics teams, this is a reminder: don’t panic at every sudden block. Sometimes, list maintainers catch a false positive or overreach and roll it back immediately. If you saw a blip in streaming analytics or affiliate traffic, this is the culprit.
The Great Purge: Why Did So Many Domains Get Removed?
Steven Black Unified Hosts removed nearly 9,000 domains in three days. That’s more removals than the next three lists combined. Most were likely low-value or outdated threats, but this much churn can trip up internal allow/deny syncs and break dashboards that track blocklist status over time. If you have automation that flags newly “unblocked” domains, expect noise in this period’s reports.
Botnet/Tracker Fodder: The Rise of Rest and CFD
This week, EasyList, AdGuard DNS Filter, and AdGuard Base Filter simultaneously added a parade of “rest” and “cfd” domains, including 7pc9tqr7ulgx85f9hhnu9hf2mb33frc.rest, 35jh3kue65rib8.cfd, and 1igzn4xcl7fne6b.cfd. When three major lists agree, there’s a high chance these are connected—possibly part of a tracker or malvertising network using bulk-generated domains. If you see new domains like these in your referral logs, treat them as radioactive until proven otherwise.
Numbers This Period
| List Name | Added | Removed |
|---|---|---|
| Steven Black Unified Hosts (ads) | 4,147 | 8,956 |
| AdGuard DNS Filter (ads) | 960 | 866 |
| AdGuard Base Filter (ads) | 916 | 887 |
| EasyList (ads) | 912 | 890 |
| Online Malicious URL Blocklist (malware) | 10 | 31 |
| uBlock Filters – Badware Risks (malware) | 6 | 0 |
| Dan Pollock's Hosts File (ads) | 6 | 0 |
| EasyPrivacy (tracking) | 5 | 0 |
| AdGuard Tracking Protection Filter | 5 | 0 |
| AdGuard Annoyances Filter | 0 | 1 |
Next digest lands July 10, 2026. Need to check a domain? isblocked.fyi is always open.
