2,768 new domains added. 100 domains removed. AdGuard DNS Filter, AdGuard Base Filter, and EasyList topped the charts with over 800 adds each. Malware blocklists saw a rare clean-up: Online Malicious URL Blocklist removed 85 domains.
ErgaDX RTB Domains: Added, Then Yanked
The rtb-apac.ergadx.com, rtb-eu.ergadx.com, rtb-useast.ergadx.com, and rtb-uswest.ergadx.com domains were added to both AdGuard DNS and Base Filters on October 7, then removed the same day.
So what? If you're sending RTB (real-time bidding) traffic through ErgaDX and saw a brief spike in failed requests, this is why. The quick removal suggests a mistake or a successful appeal by ErgaDX. For MarTech and AdOps, this is a reminder: even major adtech pipes are not immune to blocklist yo-yoing.
assets.onedollarstats.com: Blink and You Missed It
assets.onedollarstats.com landed on both AdGuard DNS and Tracking Protection Filters, then got removed the same day.
If you use onedollarstats analytics scripts, your tags may have been blocked for a few hours. This kind of rapid add-remove often points to either a misclassification or a fast correction after a user report. For analytics engineers, watch for these blips in your script load metrics.
cdn.foxpush.net: A Quick Reprieve
cdn.foxpush.net was removed from AdGuard DNS Filter after just two days. FoxPush is known for push notification services. If your site relies on their CDN for web push scripts, delivery issues seen on October 5-6 should now be resolved for users on AdGuard DNS.
The Botnet Tracker Name Generator Is Back
A wave of new domains hit EasyList and AdGuard lists. Examples: 9kcut8werch6hbker1yub.cfd, 29tj4fufueo4im.cfd, 85hozvg7r9pb8hm.rest. These domains have no obvious branding and follow the familiar "random alphanumeric" pattern, suggesting a new tracker or adware actor rotating infrastructure.
If you see traffic to these in your logs, it's likely bad news. For filter maintainers, the cross-list consensus (all hit three lists at once) means this botnet's getting attention.
Numbers This Period
| List | Added | Removed |
|---|---|---|
| AdGuard DNS Filter (ads) | 950 | 10 |
| AdGuard Base Filter (ads) | 884 | 4 |
| EasyList (ads) | 873 | 0 |
| Online Malicious URL Blocklist (malware) | 27 | 85 |
| AdGuard Tracking Protection Filter | 20 | 1 |
| EasyPrivacy (tracking) | 8 | 0 |
| uBlock Filters – Badware Risks (malware) | 2 | 0 |
| uBlock Filters – General (ads) | 2 | 0 |
| Dan Pollock's Hosts File (ads) | 1 | 0 |
| Peter Lowe's Ad and Tracking Server List | 1 | 0 |
Next digest: October 10, 2026. For live lookup, see isblocked.fyi.