What powers calcuttayellowpages.com?
Last seen Oct 2026 · 10 technologies across 10 categories
Advertising
Google AdSense
since Jan 2016
Analytics
Authentication
Facebook Login
since Jul 2021
CDN
Google Hosted Libraries
since Feb 2022
Font scripts
Google Font API
since Nov 2025
JavaScript libraries
Miscellaneous
SWFObject
since Jan 2016
Performance
Priority Hints
since Sep 2026
Security
reCAPTCHA
since Apr 2022
Web servers
Apache HTTP Server
since Jan 2016
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Oct 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
- 89% phone
- 11% desktop
India
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.66 / 10 · ranked #2,217,860 of all domains
10 referring domains · OpenPageRank
Search traffic
49 est. monthly organic visits (US)
93 keywords in Google's top 30
Core Web Vitals
| LCP | 2 s |
| INP | 275 ms |
| CLS | 0 |
| TTFB | 1000 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Weight: 1.1 MB · 58 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on Hetzner (95.216.63.198)
- DNS: calcuttayellowpages.com
- Email: calcuttayellowpages.com
- Email security: no SPF record, no DMARC record
- SSL: Let's Encrypt, RSA 2048, wildcard, expires Jan 2027
- Common Crawl link graph: rank 843,556, 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 Priority Hints Sep 2026
- dropped Google Tag Manager Dec 2025