#A21
Live, measured metrics for the hashtag #A21 from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.
Own #a21
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 2026-10-02 21:08 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 2026-10-02 21:08 UTCLive pulse
measured · fosstodon.org (Mastodon tag timeline) · fetched 2026-10-02 21:08 UTCEverything below is measured over the latest 40 public posts (spanning ~13328 hours).
Posting hours (UTC) — busiest: 05:00
Languages: German (32) · English (8)
Avg boosts / post: 1.5
Top of the latest posts
#A21 Richtung Kiel bis Klein Barkau freigegeben - Ersatz für alte B404 https://www.kn-online.de/lokales/ploen/a21-richtung-kiel-bis-klein-barkau-freigegeben-ersatz-fuer-alte-b404-OJGGRDAHVNBWTDHXJVPXR7ORPU.html > „Wir schließen damit ein St
Letzte Woche habe ich auf Einladung von @NiklasHielscher vom @VCDNord eine Fahrradtour durch den #Grüngürtel unternommen, um mir zeigen zu lassen, was der Ausbau der B 404 zur #A21 tatsächlich bedeuten würde. Im verlinkten Beitrag auf meine
Die Blockade steht! 🚧 Wir besetzten die Baustelle bei #Kiel, an der die B404 zur #A21 ausgebaut wird. Wir setzen uns damit für eine gerechte und nachhaltige #Verkehrswende ein.
#a21 across platforms
every network with a public tag surfaceFollow #a21 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/a21