#lookup

Live, measured metrics for the hashtag #lookup 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 #lookup

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.

$520.70/ year · 6-character #name
Claim #lookup — $520.70/yr→Buy on hashtag.space (web3)
card via hashtag.org · tokens via hashtag.space
1
Uses / 7 days
Mastodon
1
Accounts / 7 days
Mastodon
40
Recent posts
Mastodon
~0/hr
Recent pace
Mastodon · last 40
1.2
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 2026-10-19 12:17 UTC
0
10-13
0
10-14
1
10-15
0
10-16
0
10-17
0
10-18
0
10-19

1 uses by 1 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 2026-10-19 12:17 UTC
#lookups
0 uses · 0 accounts / 7d
#VulnerabilityLookup
0 uses · 0 accounts / 7d
#lookuponmycvanddespair
0 uses · 0 accounts / 7d
#lookuprows
0 uses · 0 accounts / 7d
#dependency_lookup
0 uses · 0 accounts / 7d
#colorLookup
0 uses · 0 accounts / 7d
#lookupatthesky
0 uses · 0 accounts / 7d
#lookupatree
0 uses · 0 accounts / 7d
#LookupTables
0 uses · 0 accounts / 7d
#lookuplondon
0 uses · 0 accounts / 7d
#lookupglasgow
0 uses · 0 accounts / 7d
#lookupstudio
0 uses · 0 accounts / 7d

Live pulse

measured · fosstodon.org (Mastodon tag timeline) · fetched 2026-10-19 12:17 UTC

Everything below is measured over the latest 40 public posts (spanning ~1431 hours).

Posting hours (UTC) — busiest: 15:00

00:0012:0023:00

Languages: English (24) · French (1) · German (1)

Avg boosts / post: 1.5

Top of the latest posts

  • I realize the space station passes overhead a few times a week, but each time I see that tiny bright dot race across the sky, it amazes me that people are living up there. #lookup #space #spacestation #iss

    Nathan Hubbard@[email protected]♥ 19↻ 32026-10-01 00:14 UTCView post →

  • 🌕 Look up on August 27! A deep partial lunar eclipse is coming to the Bay Area, with 96% of the Moon slipping into Earth’s shadow at maximum eclipse. For San Jose and the Bay Area: 🌕 Moonrise: 7:35 p.m. 🌑 Maximum eclipse: 9:12 p.m. 🌕 Pa

    SETI Institute@[email protected]♥ 14↻ 152026-08-24 23:00 UTCView post →

  • Hunk of space debris burning up as seen looking east from Seattle tonight https://youtu.be/11JnA45UgRc ~6:55pm My usual rooftop meteor cams don’t quite see this low so this is from a porch cam. #SpaceJunk #LookUp #Seattle @sundogplanets

    Kevin Freitas, Professional Generalist@[email protected]♥ 6↻ 72026-10-15 06:26 UTCView post →

What “lookup” means

Wiktionary · Wikipedia

lookup

  • nounAn attempt to retrieve data.
Full entry on Wiktionary →

In computer science, a lookup table (LUT) is an array that replaces runtime computation of a mathematical function with a simpler array indexing operation, in a process termed as direct addressing. The savings in processing time can be significant, because retrieving a value from memory is often faster than carrying out an "expensive" computation or input/output operation. The tables may be precalculated and stored in static program storage, calculated as part of a program's initialization phase

“Lookup table” on Wikipedia (CC BY-SA) →

#lookup across platforms

every network with a public tag surface

Follow #lookup 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/lookup