What powers sumi.city?
Last seen Sep 2026 · 3 technologies across 3 categories
Development
Microsoft Visual Studio
since Jul 2026
Security
HSTS
since Jul 2026
Web frameworks
Microsoft ASP.NET
since Jul 2026
AI Crawlers
Blocks all crawlers by default in robots.txt (User-agent: *). Checked Sep 2026.
- robots.txt found
- llms.txt not checked
- ai.txt not checked
AI Crawlers
All crawlers blocked
Audience
- 100% phone
Brazil
Where the site's Chrome visitors come from, largest estimated audience first.
Core Web Vitals
| LCP | 3.1 s |
| INP | 75 ms |
| CLS | 0.2 |
| TTFB | 2200 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Weight: 0.0 MB · 3 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on SALESFORCE (13.111.67.8)
- DNS: exacttarget.com
- Email: exacttarget.com
- Email security: SPF (hard fail), DMARC reject
- SSL: DigiCert, RSA 2048, expires Jan 2027
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted