5,729 new domains were added to major blocklists this period. 4,344 domains got removed. The biggest swings came from Steven Black Unified Hosts, with 2,961 additions and a notable 4,293 removals. EasyList, AdGuard Base, and AdGuard DNS Filter all pushed nearly 900 new entries each, with minimal removals. Let’s break down what stood out—and why it matters.

Bannermanager.bnr.bg: A Quick Exit

bannermanager.bnr.bg appeared on Peter Lowe’s Ad and Tracking Server List on June 20 and vanished almost as fast. BNR is Bulgaria’s national radio broadcaster, and this subdomain likely handles ad infrastructure. The rapid removal hints at either a false positive or a quick response to feedback from actual site breakage. If you run analytics on publisher domains, check your logs for failed ad loads or reporting hiccups tied to this domain. Quick block-and-unblock cycles like this are a reminder: some list maintainers do respond to real-world breakage.

tracker.metricswave.com: Tracker or Not?

tracker.metricswave.com was dropped from Peter Lowe’s list after a short stint. MetricsWave is a low-profile analytics vendor. Its removal suggests either a misclassification (maybe it was collecting less data than expected) or a successful request for delisting. For MarTech teams using niche analytics, this is a small win. It shows that not every “tracker” gets a permanent sentence—sometimes, there’s an appeal process.

High-Consensus Blocks: Generated Domains and Networked Abuse

Several domains with generated-looking names, like 6ko3tqx71gt7z6ujf88rwtv9iu.rest and 2m6q8xmk6zykqehuli.cfd, landed on three major lists at once: AdGuard Base Filter, AdGuard DNS Filter, and EasyList. Domains like these are almost certainly part of a tracker or malvertising network that uses churned subdomains. For developers fighting evasive trackers, this is a sign that blocklist curators are keeping up with automated domain generation. If you’re seeing a spike in analytics errors or broken pixels, check for requests to these kinds of domains.

aurorabrand.co.il: The 48-Hour Rule

aurorabrand.co.il spent less than two days on AdGuard DNS Filter before being removed. This kind of whiplash usually means the domain was either misclassified or the maintainers received a credible complaint. If you have clients with .co.il domains or serve Israeli audiences, keep an eye on short-lived block events—they can cause brief but confusing outages.

Numbers this period

Next digest drops June 25, 2026. For live block status, head to isblocked.fyi.