#F21

Live, measured metrics for the hashtag #F21 from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.

hashtag.org network · sponsored

Own #f21

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.

$5,313.74/ year · 3-character #name
Claim #f21 — $5,313.74/yr→Buy on hashtag.space (web3)
card via hashtag.org · tokens via hashtag.space
0
Uses / 7 days
Mastodon
0
Accounts / 7 days
Mastodon
13
Recent posts
Mastodon
~0/hr
Recent pace
Mastodon · last 13
0.1
Avg reactions / post
Mastodon · last 13
—
Reddit posts / month
Reddit search
—
Open-web mentions
hashtag.org Firehose

Day-by-day usage

measured · mas.to (Mastodon public tags API) · fetched 2026-10-02 14:06 UTC
0
09-26
0
09-27
0
09-28
0
09-29
0
09-30
0
10-01
0
10-02

0 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 2026-10-02 14:06 UTC
#f21fd541853
3 uses · 3 accounts / 7d
#f21bebf374c
5 uses · 5 accounts / 7d
#fe6605f21a4
0 uses · 0 accounts / 7d
#_icalv_21f0f375
0 uses · 0 accounts / 7d
#f8e21f42311
2 uses · 1 accounts / 7d
#f0fd21f04ee
0 uses · 0 accounts / 7d
#f21a1a40f78
0 uses · 0 accounts / 7d
#f03e8ec21f6
3 uses · 3 accounts / 7d
#f22cbef9c21
0 uses · 0 accounts / 7d
#f43d21d5054
0 uses · 0 accounts / 7d
#f9930c42d21
4 uses · 2 accounts / 7d
#acd21bc2f88
3 uses · 3 accounts / 7d

Live pulse

measured · mas.to (Mastodon tag timeline) · fetched 2026-10-02 14:06 UTC

Everything below is measured over the latest 13 public posts (spanning ~25858 hours).

Posting hours (UTC) — busiest: 19:00

00:0012:0023:00

Languages: English (4) · German (4) · Norwegian Bokmål (3) · French (1) · Norwegian (1)

Avg boosts / post: 0.8

Top of the latest posts

  • Det store #skolesviket fra #Oslo #Høyre og #Venstre Alt for å gi milliardærerne på vestkanten lavere skatt. #skolebehovsplan #politikerforakt #Fyrstikkalleen #F21 #Brynseng

    Peter Krefting@[email protected]♥ 1↻ 22025-12-18 09:59 UTCView post →

  • The Netherlands and Naval Group extend the Industrial Cooperation Agreement On 17th July 2026, the Netherlands Ministry of Economic Affairs and Climate and Naval Group signed an amendment… #Netherlands #Nederland #NL #Europe #Europa #EU #Du

    Netherlands@[email protected]♥ 0↻ 12026-07-22 07:18 UTCView post →

  • Boursorama: Les #Pays-Bas choisissent la #torpille #française #F21 pour leurs prochains #sous-marins au détriment de la #MK48 #américaine #Souveraineté #Défense #Européenne www.boursorama.com/bourse/actua... Les Pays-Bas choisissent la to..

    Rod2ik 🇪🇺 🇨🇵 🇪🇸 🇨🇱 🇺🇦 🇨🇦 🇬🇱 ☮🕊️@[email protected]♥ 0↻ 02026-06-17 22:27 UTCView post →

#f21 across platforms

every network with a public tag surface

Follow #f21 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.

X (Twitter) ↗Instagram ↗TikTok ↗Facebook ↗LinkedIn ↗YouTube ↗Threads ↗Bluesky ↗Mastodon ↗Reddit ↗Pinterest ↗Tumblr ↗

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/f21