What powers isitdns.com?
Last seen Oct 2026 · 11 technologies across 9 categories
Analytics
Cloudflare Browser Insights
since Jun 2021
Google Analytics
since Apr 2019
Caching
Varnish
since Apr 2019
CDN
Cloudflare
since Apr 2019
Fastly
since Apr 2019
Font scripts
Google Font API
since Apr 2019
Miscellaneous
HTTP/3
since Sep 2022
PaaS
GitHub Pages
since Apr 2019
Performance
Cloudflare Rocket Loader
since Oct 2022
Security
HSTS
since Sep 2022
Tag managers
Google Tag Manager
since Apr 2019
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 66% desktop
- 34% phone
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.30 / 10 · ranked #2,875,816 of all domains
23 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.6 s |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Oct 2026.
Page
- Language: English
- CDN: Cloudflare, Fastly
- Weight: 0.4 MB · 15 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on Cloudflare (104.21.84.76, IPv6)
- DNS: Cloudflare DNS
- Email: isitdns.com
- Email security: no SPF record, no DMARC record, DNSSEC signed, CAA
- SSL: Google Trust Services, ECDSA P256, wildcard, expires Jan 2027
- Common Crawl link graph: rank 1,897,063, 2 hosts
- Verified with: Google
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted