What powers firefox-dev.tools?
Last seen Oct 2026 · 3 technologies across 3 categories
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Nov 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Open Page Rank
4.81 / 10 · ranked #265,071 of all domains
55 referring domains · OpenPageRank
Page
- CDN: Fastly
- Weight: 0.2 MB · 21 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Registered Feb 2015 (11 years) via MarkMonitor Inc., renews Feb 2027
- Hosted on Fastly (185.199.108.153, IPv6)
- DNS: markmonitor.com
- Email: no MX record returned
- Email security: SPF (hard fail), DMARC reject
- SSL: Let's Encrypt, RSA 2048, expires Jan 2027
- Common Crawl link graph: rank 1,900,245, 3 hosts
DNS records as swept Nov 2026, certificate as seen Nov 2026, registration from the registry's RDAP service. How the web is hosted
Full technology history →
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Recent changes
- dropped GoDaddy Dec 2025