42,837 domains were removed this period. 23,377 were added. The top three lists by churn were AdGuard DNS Filter, Steven Black Unified Hosts, and AdGuard Base Filter. EasyList dropped over 11,000 domains—nearly 10 times what it added.

Fast-Tracked Removals: 18 Domains In, Out, and Gone

If you blinked, you missed them. Eighteen domains were added to three major lists (AdGuard Base, AdGuard DNS, EasyList) on October 27, then removed in bulk less than a day later. Examples: 112wo4zneoinut6zc.rest, 12jwe4flx3eu73vp8.cfd, 13juk6f4qujcon697yuxhwy9tbi9pckz7rb.cfd. All were flagged and then dropped almost immediately.

So what? If you watch blocklists to debug third-party scripts, you may see domains vanish as fast as they appear. This is usually a sign of a false positive sweep or a cleanup of low-value, possibly auto-generated domains. If you manage infrastructure, don’t panic if your test domain ends up on a major list for a few hours—there’s a decent chance it will be gone before you finish writing your support ticket.

Blocklists Swarm on “Qpon” and “.rest” Junk Nets

This cycle saw a pile of generated domains like anopiasbeguine.qpon, accidiafilmize.qpon, 9mjln8krqi3zft1577m85xmzekihg.rest, and 11xwh2pzi61jmj.rest land on three major ad lists at once. These multi-list hits point to coordinated tracker or malvertising networks spinning up disposable domains. The .qpon TLD is especially suspicious.

So what? If you see a spike in traffic from “qpon” or similar domains, treat it as a red flag. These are high-consensus blocks, so expect them to be dead on arrival in most environments with even basic blocking enabled.

AdGuard and EasyList Drop Weight

AdGuard DNS Filter, AdGuard Base Filter, and EasyList each removed more than 11,000 domains, dwarfing their additions. This is not a typo: EasyList, for example, added 1,040 domains but removed 11,592.

So what? This kind of housecleaning usually means a major deduplication, a dead domain purge, or a rollback of a previous bad batch. If your analytics suddenly light up with previously-blocked domains, check if they were just purged from a big list. It’s less likely your users suddenly love your ads.

Peter Lowe’s List Goes After “Best Content Food”

A rare legit-looking domain, a.bestcontentfood.top, showed up on Peter Lowe’s Ad and Tracking Server List. Most entries this cycle were random character strings. This one stands out for actually looking like a website you could explain to your boss.

So what? If you’re using or partnering with third-party content recommendation engines, check for blocklist hits—even if the domain sounds harmless. Legitimate-sounding names aren’t immune from tracking or ad abuse, and curated lists are starting to notice.

Numbers this period

Next digest: October 31, 2026. For live lookups, visit isblocked.fyi