13,655 new domains joined the blocklists this period, while 11,832 were cut loose. Most of the action happened on Steven Black’s Unified Hosts list (+10,733, -11,769), but EasyList and AdGuard Base/DNS Filters also kept busy. A few removals from curated tracking lists stand out, and a wave of random-looking domains hit consensus blocks.

Onedio Analytics Gets a Reprieve

analytics.onedio.com was added to both AdGuard DNS Filter and AdGuard Tracking Protection Filter—then swiftly removed within the same period. If you ship analytics code for publishers, take note: this likely signals a moderation or false positive correction, not a permanent whitelist. If your tracking endpoint gets caught in a similar “blink-and-you-miss-it” block, expect some brief data loss but a quick return to normal. Monitor list update timings to correlate with traffic drops.

Salesforce Marketing Cloud Image Host Removed

image-sap.sfmc-content.com was briefly listed, then removed, from both AdGuard DNS Filter and Tracking Protection Filter. SFMC (Salesforce Marketing Cloud) serves images here for email campaigns and web beacons. Blocking it can break email renders and tracking. Its removal should be a relief for CRM and email teams relying on pixel tracking. The block may have been an overzealous inclusion or user feedback win. Always check your deliverability and pixel loads after major list updates.

Yesware’s Email Tracker Slips Off a List

t.yesware.com was removed from AdGuard Tracking Protection Filter. Yesware is widely used for email open and click tracking. If you manage deliverability or track engagement, this removal means some users who rely on AdGuard Tracking Protection will start seeing your opens again. Don’t celebrate too early—other lists still block Yesware, and this could be temporary.

Tracker Domain Soup: High-Consensus Blocks

Eight domains with names like 6ihm6mn8pn6676owjqwozlgk.rest and 49cwxbn4ujhzw94927bpxno749.cfd hit three major lists at once (AdGuard Base Filter, DNS Filter, and EasyList). These look like generated or burner domains, probably part of tracker or malvertising networks that rotate infrastructure. If you filter by “blocked everywhere,” expect these to get caught fast. If you’re running automated blocklist sync, these are the domains that will trigger your “suspicious new tracker” alerts.

Numbers this period

Next digest drops June 22. Check your domains at isblocked.fyi.