#404pagenotfound
Live, measured metrics for the hashtag #404pagenotfound from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.
Own #404pagenotfound
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 2026-07-30 14:01 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 2026-07-30 14:01 UTCNo related tags with measured usage found for #404pagenotfound.
Live pulse
measured · fosstodon.org (Mastodon tag timeline) · fetched 2026-07-30 14:01 UTCEverything below is measured over the latest 2 public posts (spanning ~69031 hours).
Posting hours (UTC)
Languages: English (2)
Avg boosts / post: 0
Top of the latest posts
WSJ thinks it's Shakespeare's reincarnation... reviewing a building? 🤨🎭 Apparently, #architecture now requires a #sonnet and a soliloquy. Meanwhile, we'll just keep scrolling past the latest "404 Page Not Found" #masterpiece. 🏗️📜🚫 http
Not sure if @Gargron or @wolfteeth did this error gif but it gave me a nice laugh, this is why I love #mastodon. #404pagenotfound https://mastodon.technology/media/3nLmPUDi2UoLX5dqUs0
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/404pagenotfound