What powers fourdog.com?
Last seen Oct 2026 · 15 technologies across 9 categories
Analytics
CDN
Ecommerce
Font scripts
IaaS
JavaScript libraries
Miscellaneous
Security
Widgets
AI Crawlers
Restricts 23 of 33 AI crawlers we track by name in its robots.txt. Checked Oct 2026.
Training crawlers
- AI2Bot Restricted
- Applebot-Extended Restricted
- Bytespider Restricted
- CCBot Restricted
- ClaudeBot Restricted
- cohere-training-data-crawler Restricted
- Diffbot Restricted
- FacebookBot Restricted
- Google-Extended Restricted
- GoogleOther Restricted
- GPTBot Restricted
- ImagesiftBot Restricted
- img2dataset Restricted
- meta-externalagent Restricted
- Webzio-Extended Restricted
Search and AI assistants
- Amazonbot Restricted
- Applebot Restricted
- OAI-SearchBot Restricted
- PerplexityBot Restricted
- PetalBot Restricted
- YouBot Restricted
User-request fetchers
- ChatGPT-User Restricted
- meta-externalfetcher Restricted
The other 10 AI crawlers we track are not mentioned and only inherit the catch-all rules that apply to every crawler.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
23 of 33 AI crawlers restricted
Audience
- 69% phone
- 31% desktop
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.71 / 10 · ranked #4,907,506 of all domains
21 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.2 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 700 ms |
Real user p75, Chrome UX Report, Oct 2026.
Page
- Language: English
- CDN: Cloudflare, Google
- Weight: 0.6 MB · 55 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on BIGCOMMERCE (63.141.128.8)
- DNS: bigcommerce.com
- Email: bigcommerce.com
- Email security: SPF (hard fail), DMARC monitor only
- SSL: Google Trust Services, ECDSA P256, expires Dec 2026
- Common Crawl link graph: rank 3,981,668, 2 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Full technology history →
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Recent changes
- detected Google Cloud Jun 2026
- detected Google Cloud CDN Jun 2026