indexo.dev

citychallenge.org

.org crawl

First seen 2026-06-15 · Last seen 2026-06-15 · ok HTTP/1.1 200 546 ms crawled 2026-06-15

US · 104.21.57.81 · AS13335 Cloudflare, Inc.

Reputation 100/100

Classifying

HTML metadata

Title
CityChallenge.org — Take the Challenge
Description
Join the Citychallenge community. Represent your city through interactive challenges, leaderboards, and real rewards.
Language
en
Canonical
https://citychallenge.org/

Open Graph

url
https://citychallenge.org/
title
CityChallenge.org — Take the Challenge
site name
CityChallenge.org
description
Join the Citychallenge community. Represent your city through interactive challenges, leaderboards, and real rewards.

Technology

CDN
Cloudflare

Third-party hosts loaded (1)

  • images.pexels.com×2

DNS records live

NS
  • aspen.ns.cloudflare.com
  • gordon.ns.cloudflare.com

Email authentication no MX

SPF
not published
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

WE1
from 2026-04-28 to 2026-07-27
Expires in 39 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 60/100 Checked live page: https://citychallenge.org/

present
  • strict-transport-security
  • x-content-type-options
findings
  • missing Content Security Policy
  • missing frame protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
x-content-type-options
nosniff
strict-transport-security
max-age=15552000; includeSubDomains

Links to (9)

Linked from (1)

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