What powers rspec.info?
Last seen Jun 2025 · 9 technologies across 8 categories
Caching
CDN
Font scripts
JavaScript frameworks
Miscellaneous
PaaS
Video players
AI Crawlers
Blocks 1 of 33 AI crawlers we track by name in its robots.txt. Checked Sep 2026.
Training crawlers
- GPTBot Blocked
The other 32 AI crawlers we track are not mentioned and stay allowed by default.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
1 of 33 AI crawlers blocked
Audience
- 100% desktop
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
7.09 / 10 · ranked #33,710 of all domains
695 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.6 s |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Aug 2026.
Infrastructure
- Registered Nov 2007 (18 years) via 1API GmbH, renews Nov 2026
- Hosted on Fastly (185.199.108.153, IPv6)
- DNS: dnsimple-edge.com
- Email: Mailgun
- Email security: SPF (soft fail), no DMARC record
- SSL: Let's Encrypt, RSA 2048, expires Oct 2026
- Common Crawl link graph: rank 22,878, 3 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026, registration from the registry's RDAP service. How the web is hosted