What powers sizespectrum.org?
Last seen Jul 2026 · 16 technologies across 9 categories
Caching
Varnish
since Apr 2026
CDN
Mailgun
since Apr 2026
Font scripts
JavaScript graphics
JavaScript libraries
Miscellaneous
PaaS
GitHub Pages
since Apr 2026
UI frameworks
Bootstrap
since Apr 2026
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Sep 2026. A recent check saw a policy file missing; awaiting confirmation.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Open Page Rank
2.64 / 10 · ranked #2,254,120 of all domains
17 referring domains · OpenPageRank
Infrastructure
- Hosted on Fastly (185.199.108.153)
- DNS: Google Cloud DNS
- Email: Mailgun
- Email security: SPF (soft fail), no DMARC record
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 2,031,554, 6 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted