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21km.lol

21km.lol

Sponsor Aleks at a half marathon. Your logo runs all 21.1 km.

Turns a real half-marathon shirt into a live sponsorship auction where higher bids get bigger, more prominent logo placements.

Visit 21km.lol

Key facts

Founder
Aleksandar Jovanovic · 1.3K followers
Founded
August 2026
Based in
🇩🇪 Germany
Payments
Stripe
Revenue, 12 months
$308
Revenue, all time
$308
Domain registered
August 2026
Registrar
Key-Systems, LLC
Listed on StartupsIntel
October 2026

Built with

React (frontend)Stripe (backend)Railway (backend)

Daily revenue, last 30 days

Verified with Stripe
$0$0$1$1$110-0910-1710-2511-0211-07

Monthly revenue

Verified with Stripe
$0$250$50026-0826-09

Popularity by source

October 2026

Not in any top-million list

That usually means fewer than about 76.5K visits a month. New and niche sites rarely reach public rankings, we check again every month.

TrancoResearch list, average of several rankingsNot listed
Cloudflare RadarTraffic through Cloudflare's networkNot listed
Chrome UX ReportVisits by Chrome users, from GoogleNot listed
Cisco UmbrellaDNS lookupsNot listed
MajesticSites linking to itNot listed

Ranks for this exact domain, lower is more popular. How we combine them

Whois information

Domain21km.lol
RegistrarKey-Systems, LLC
Registrar ID1345
Created date2026-08-27 10:51:31 UTC
Expires date2027-08-27 23:59:59 UTC
Updated date2026-10-19 08:21:01 UTC
Domain statusclient renew prohibitedclient transfer prohibitedclient update prohibitedclient delete prohibited
Name serversns03.domaincontrol.comns04.domaincontrol.com
DNSSECunsigned

Raw whois

Domain Name: 21KM.LOL
Registry Domain ID: D635559714-CNIC
Registrar: Key-Systems, LLC
Registrar IANA ID: 1345
Registrar Abuse Contact Email: [email protected]
Registrar Abuse Contact Phone: +49.68949396850
Updated Date: 2026-10-19T08:21:01.0Z
Creation Date: 2026-08-27T10:51:31.0Z
Registry Expiry Date: 2027-08-27T23:59:59.0Z
Domain Status: client renew prohibited
Domain Status: client transfer prohibited
Domain Status: client update prohibited
Domain Status: client delete prohibited
Name Server: NS03.DOMAINCONTROL.COM
Name Server: NS04.DOMAINCONTROL.COM
DNSSEC: unsigned
>>> Last update of RDAP database: 2026-10-26T17:47:51.0Z <<<

SEO audit

13 of 16 checks passed

83

SEO score

Response 522 ms · 4 KB

  • Served over HTTPS
  • Title tag present
  • Title length 30 to 60 characters
  • Meta description present
  • Description length 70 to 160 characters
  • Exactly one H1 headingAdd one clear H1 heading.
  • Uses H2 sub-headingsStructure content with H2 sub-headings.
  • Canonical URL set
  • Mobile viewport tag
  • Language declared
  • Open Graph tags
  • Twitter card tags
  • Structured data (JSON-LD)
  • Images have alt text
  • At least 300 words of contentAdd more indexable copy to the homepage.
  • Responds in under 1.5 seconds
Title (53 characters)
Sponsor a half-marathon runner in Dortmund — 21km.lol
Description (157 characters)
Sponsor Aleks at the Sparkassen Phoenix Half Marathon. The top 11 sponsors run all 21.1 km on his real race shirt; #1 becomes the title sponsor on the front.
Headings
0 H1, 0 H2, 0 H3
Words on page
0
Links
0 internal, 0 external
Structured data
WebSite, Person, SportsEvent