#404errors
Live, measured metrics for the hashtag #404errors from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.
Own #404errors
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 · mas.to (Mastodon public tags API) · fetched 2026-09-29 16:58 UTC0 uses by 0 unique accounts across the window. Real per-day counts, not estimates. Newest bar is today so far.
Related hashtags
measured · mas.to (Mastodon public search API) · fetched 2026-09-29 16:58 UTCLive pulse
measured · mas.to (Mastodon tag timeline) · fetched 2026-09-29 16:58 UTCEverything below is measured over the latest 14 public posts (spanning ~12384 hours).
Posting hours (UTC) — busiest: 08:00
Languages: English (14)
Avg boosts / post: 0
Top of the latest posts
🍎📱 Oh, the epic saga of iPhone app blockers—the Everest of coding, except the article couldn’t even find its own page! Maybe start by blocking out 404 errors before tackling distractions? 🙈🚫 https://usefella.com/blog/how-iphone-app-bloc
🚨 Oh no, the machines are knocking at the door! 😱 Instead of letting them in, our brave tech chieftains deployed... ModSecurity! 🤖💔 What an impenetrable fortress we've crafted, folks—404 errors for everybody! 🎉 https://blog.semenzin.co
FYI: Google's expiry tag forces a re-crawl, and it won't fix 50% of 404 hits: Classifieds site cycles 10,000 listings monthly on 24-72 hour lifespans against 5,000 stable URLs. Half of Googlebot hits land on 404s. What the tag misses. https
What “404errors” means
Wiktionary · Wikipediaerrors/ˈɛɹəz/
- nounThe state, quality, or condition of being wrong.
- verbTo function improperly due to an error, especially accompanied by error message.
An error is an inaccurate or incorrect action, thought, or judgement.
“Error” on Wikipedia (CC BY-SA) →#404errors across platforms
every network with a public tag surfaceFollow #404errors 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/404errors