#dnsbl
Live, measured metrics for the hashtag #dnsbl from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.
Own #dnsbl
This #name is available to claim. It becomes your portal on the open agent web: this very page, a keyword you rank for by an open public stake, and a verifiable identity for AI agents. Nobody else sells a page like this for every #name.
Day-by-day usage
measured · fosstodon.org (Mastodon public tags API) · fetched 2026-09-10 18:47 UTC0 uses by 0 unique accounts across the window. Real per-day counts, not estimates. Newest bar is today so far.
Related hashtags
measured · fosstodon.org (Mastodon public search API) · fetched 2026-09-10 18:47 UTCLive pulse
measured · fosstodon.org (Mastodon tag timeline) · fetched 2026-09-10 18:47 UTCEverything below is measured over the latest 40 public posts (spanning ~19566 hours).
Posting hours (UTC) — busiest: 13:00
Languages: English (30) · German (5) · Chinese (2) · Spanish (1)
Avg boosts / post: 1.1
Top of the latest posts
📆 From next week we will start to restrict access to Oracle IP addresses querying our DNSBLs. To stay protected by the data register for Spamhaus Technology's FREE Data Query Service - it takes minutes to change config 👇 https://www.spamh
📣 SERVICE UPDATE | From April 8th, access will start to be restricted to those querying our free DNSBLs via Oracle’s network. Full info here👇 https://www.spamhaus.org/resource-hub/email-security/querying-the-free-dnsbls-via-oracle/ Sign-u
📣 SERVICE UPDATE | From February 19th, access will start to be restricted to those querying the free DNSBLs via Hetzner’s infrastructure. Full info here ⤵️ https://www.spamhaus.org/resource-hub/email-security/query-the-legacy-dnsbls-via-he
What “dnsbl” means
WikipediaA Domain Name System blocklist, Domain Name System-based blackhole list, Domain Name System blacklist (DNSBL) or real-time blackhole list (RBL) is a service for operation of mail servers to perform a check via a Domain Name System (DNS) query whether a sending host's IP address is blacklisted for email spam. Most mail server software can be configured to check such lists, typically rejecting or flagging messages from such sites.
“Domain Name System blocklist” on Wikipedia (CC BY-SA) →#dnsbl across platforms
every network with a public tag surfaceFollow #dnsbl straight to each platform’s own tag page. Where a platform publishes open data we measure it above; the rest lock their numbers behind paid APIs, so we link rather than guess.
Every number above is measured from a named public API at the shown fetch time. Nothing is estimated or extrapolated. Platforms that lock their data behind paid APIs are not shown. Agents: the same numbers, as JSON, at /api/hashtags/dnsbl