#underpass

Live, measured metrics for the hashtag #underpass 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 #underpass

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.

$51.02/ year · 9-character #name
Claim #underpass — $51.02/yr→Buy on hashtag.space (web3)
card via hashtag.org · tokens via hashtag.space
0
Uses / 7 days
Mastodon
0
Accounts / 7 days
Mastodon
40
Recent posts
Mastodon
~0/hr
Recent pace
Mastodon · last 40
0.7
Avg reactions / post
Mastodon · last 40
—
Reddit posts / month
Reddit search
—
Open-web mentions
hashtag.org Firehose

Day-by-day usage

measured · fosstodon.org (Mastodon public tags API) · fetched 2026-09-27 23:46 UTC
0
09-21
0
09-22
0
09-23
0
09-24
0
09-25
0
09-26
0
09-27

0 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 2026-09-27 23:46 UTC
#TokyoUnderpass
1 uses · 1 accounts / 7d
#underpasses
0 uses · 0 accounts / 7d
#UnderpassAesthetics
0 uses · 0 accounts / 7d
#underpasssciclass
0 uses · 0 accounts / 7d
#VAN_HORNE_UNDERPASS
0 uses · 0 accounts / 7d
#underpasskills
0 uses · 0 accounts / 7d
#UnderpassVibes
0 uses · 0 accounts / 7d
#underpassart
0 uses · 0 accounts / 7d
#UnderpassAgogora
0 uses · 0 accounts / 7d

Live pulse

measured · fosstodon.org (Mastodon tag timeline) · fetched 2026-09-27 23:46 UTC

Everything below is measured over the latest 40 public posts (spanning ~10169 hours).

Posting hours (UTC) — busiest: 15:00

00:0012:0023:00

Languages: English (15) · German (2) · Czech (1)

Avg boosts / post: 1.1

Top of the latest posts

  • #Photography #Graffiti #Budapest #Kelenföld #Underpass

    SanskritFritz@SanskritFritz♥ 12↻ 12026-05-24 19:59 UTCView post →

  • #silentsunday #monochrome #underpass underneath the Autobahn (A2)

    Daniel Kramer@[email protected]♥ 7↻ 42026-08-02 18:41 UTCView post →

  • keadamander (@[email protected]) https://pixelfed.social/p/keadamander/976872355931205987 > Violet on Stone #photography #helios #helios44 #helios44m #urbanphotography #streetphotography #graffiti #graffitiart #underpass #urbanexp

    keadamander@keadamander♥ 6↻ 02026-06-28 15:54 UTCView post →

What “underpass” means

Wiktionary · Wikipedia

underpass

  • nounA passage that crosses a road, railroad or similar obstacle in a tunnel underneath it.
Full entry on Wiktionary →

A subway, also known as an underpass, is a grade-separated pedestrian crossing running underneath a road or railway in order to entirely separate pedestrians and cyclists from motor or train traffic.

“Subway (crossing)” on Wikipedia (CC BY-SA) →

#underpass across platforms

every network with a public tag surface

Follow #underpass 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/underpass