Topics & Niches

Top 404 Websites

Browse live examples related to 404, then open the strongest domains to inspect traffic, SEO, business posture, and trust signals in more detail.

Cluster total

1,833

Use the full cluster to move from a broad theme into a smaller report shortlist.

Cluster coverage

223 with traffic data

Traffic coverage tells you how many sites in view already support stronger prioritization work.

Fastest analyst move

Open app.link

Then compare it with ac.lk to tell whether the first result is representative.

Sort:

Has traffic dataMin score:

#1.0K rank54/100 trust

app.link

Live site data

app.link

error-page404url-shortener

app.link

71.2M/mo

#6.1K rank64/100 trust

ac.lk

Live site data

404 Not Found

404nginxerror page

ac.lk

8.0M/mo

#13.7K rank64/100 trust

360doc.com

Live site data

404 Not Found

404nginxerror page

360doc.com

3.9M/mo

#20.4K rank25/100 trust

acemlna.com

Live site data

acemlna.com

404not foundempty page

acemlna.com

4.2M/mo

#23.2K rank59/100 trust

arca.gob.ar

Live site data

Not Found

governmentargentinaerror-page

arca.gob.ar

2.2M/mo

#24.4K rank25/100 trust

acemlnb.com

Live site data

acemlnb.com

404not foundblank page

acemlnb.com

3.4M/mo

#33.8K rank30/100 trust

baby-homecare.com

Live site data

404 Not Found

404ErrorUnavailable

baby-homecare.com

2.5M/mo

#59.5K rank25/100 trust

acemlnc.com

Live site data

acemlnc.com

404not foundempty page

acemlnc.com

1.2M/mo

#68.7K rank46/100 trust

12paffiliates.com

Live site data

Not Found

404not foundinactive site

12paffiliates.com

1.0M/mo

#73.6K rank30/100 trust

adeffect.jp

Live site data

adeffect.jp

error-page404inactive

adeffect.jp

1.1M/mo

#74.8K rank36/100 trust

12ft.io

Live site data

12ft.io

404error pageminimal UI

12ft.io

925K/mo

#84.5K rank46/100 trust

apprf.com

Live site data

Página não encontrada!

404error-pageportuguese

apprf.com

608K/mo

#90.7K rank45/100 trust

addirmits-conalty.com

Live site data

404 Not Found

404not-foundinactive-site

addirmits-conalty.com

663K/mo

#97.6K rank61/100 trust

51kanong.com

Live site data

404 Not Found

404nginxerror page

51kanong.com

381K/mo

#103.8K rank51/100 trust

admentum.se

Live site data

404 - redirect.pizza

redirectdnsdomain

admentum.se

450K/mo

#104.1K rank38/100 trust

aviaonline.fun

Live site data

404 Not Found

error404parked

aviaonline.fun

451K/mo

#104.9K rank44/100 trust

googletagmanager.com

Live site data

404

googletag-manageranalytics

googletagmanager.com

544K/mo

#107.1K rank41/100 trust

521000.com

Live site data

Not Found

404not founderror page

521000.com

173K/mo

#113.4K rank38/100 trust

advancecare.pt

Live site data

404 Not Found

404error-pageinactive

advancecare.pt

236K/mo

#114.5K rank41/100 trust

aero.inc

Live site data

Not Found

404error-pageinactive

aero.inc

290K/mo

#117.2K rank40/100 trust

ai-history.com

Live site data

ai-history.com

error-page404placeholder

ai-history.com

469K/mo

#118.3K rank25/100 trust

2026videocdnmetrica.com

Live site data

404 Not Found

404error pageinactive site

2026videocdnmetrica.com

590K/mo

#121.0K rank59/100 trust

12dt.com

Live site data

404 Not Found

404nginxerror page

12dt.com

141K/mo

#128.1K rank54/100 trust

51zxw.net

Live site data

Not Found

404not founderror page

51zxw.net

309K/mo

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Cluster takeaways

What stands out in 404

Fastest representative example

app.link and ac.lk are the quickest live reports to open when you need to understand the 404 cluster.

Trust baseline

The average legitimacy score is 32/100, which suggests a weaker quality posture across this cluster before you open individual reports.

Traffic coverage

12% of indexed sites in this cluster already have traffic data, which gives you thin coverage for cluster-level prioritization instead of pure guesswork.

Dominant technology signal

unknown shows a dominant recurring technology signal in this cluster, so treat it as a useful pivot rather than a universal pattern.

Audience/topic signal

404 shows a dominant recurring topical signal here, which helps explain where adjacent niche pages and compare opportunities should go next.

Aggregate stats

2Kindexed sites

223 with traffic data — thin coverage for prioritization.

Avg legitimacy score

32/ 100

weaker quality posture across currently indexed sites.

Traffic rank distribution

Top 10K: 2Top 100K: 12Top 1M: 86Unranked: 1733

Top technologies

Detected technology signals in this filtered cluster, not universal market share.

unknown1531cloudflare290react6wordpress5

Use 404 as a decision shortcut

A directory page reduces the time it takes to move from a broad idea into a shortlist of real domains you can inspect. Treat it as the shortlist layer, not the final answer.

Keep exploring

Where to go after 404

Use these links to jump from the directory into live reports, comparisons, and adjacent browse paths without losing context.

Browse path

Questions about 404

These pages should help visitors understand both the list itself and the next best navigation move.

What can I learn from the 404 topic page?

Use this page to scan websites connected to 404, open the strongest candidates, and compare their detailed report modules before making a decision.

What is the difference between a topic page and a category page?

A topic page is more editorial and audience oriented. It is useful when you care about niche intent and content themes more than formal business classification.

How should I use topic pages in a research workflow?

Start with the topic, identify standout domains, then use the report modules to judge authority, monetization posture, and technical sophistication.