What powers grchallenge.com?
Last seen Jul 2026 · 17 technologies across 11 categories
Advertising
Microsoft Advertising
since Jul 2026
Analytics
CDN
Comment systems
Cookie compliance
Font scripts
Google Font API
since Jul 2026
Live chat
WhatsApp Business Chat
since Jul 2026
Maps
Miscellaneous
HTTP/3
since Jul 2026
Open Graph
since Jul 2026
Programming languages
PHP
since Jul 2026
UI frameworks
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Sep 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
Infrastructure
- Hosted on Cloudflare (104.21.11.174, IPv6)
- DNS: Cloudflare DNS
- Email: grchallenge.com
- Email security: no SPF record, no DMARC record
- SSL: Google Trust Services, ECDSA P256, wildcard, expires Nov 2026
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted