What powers underpassapp.com?
Last seen Aug 2026 · 2 technologies across 2 categories
Miscellaneous
Web servers
AI Crawlers
Blocks 9 of 33 AI crawlers we track by name in its robots.txt. Checked Sep 2026.
Training crawlers
- Applebot-Extended Blocked
- CCBot Blocked
- ClaudeBot Blocked
- Google-Extended Blocked
- GPTBot Blocked
- meta-externalagent Blocked
Search and AI assistants
- Amazonbot Blocked
- PerplexityBot Blocked
User-request fetchers
- ChatGPT-User Blocked
The other 24 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
9 of 33 AI crawlers blocked
Audience
- 64% desktop
- 36% phone
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.57 / 10 · ranked #829,454 of all domains
71 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.9 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 700 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English
- Weight: 0.1 MB · 11 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on TIGERTECH (74.114.88.152)
- DNS: tigertech.net
- Email: tigertech.net
- Email security: no SPF record, DMARC monitor only
- SSL: Let's Encrypt, RSA 2048, wildcard, expires Nov 2026
- Common Crawl link graph: rank 662,093
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted