Responsible Web Crawling
We crawl the web ethically to make the internet safer and more reliable for everyone.
What We Do
Observer identifies web issues that impact security and user experience, while strictly respecting robots.txt guidelines.
Third-Party Risk Detection
Identify compromised external resources (images, scripts, links) that could turn your site into an attack vector, harming visitors and damaging your SEO rankings.
Security Monitoring
Detect expired domains purchased by malicious actors and prevent dangerous redirects.
Performance Analysis
Identify slow-loading resources and performance bottlenecks affecting your site.
Detailed Insights
Comprehensive reports with actionable recommendations for improvement.
Why Responsible Crawling Matters
We believe in making the web better for everyone through ethical practices and mutual respect.
Respect First
We honor robots.txt and never overload servers
Attack Prevention
Stop third-party resources from turning your site into a threat
User Protection
Keep visitors safe from harmful content
Continuous Improvement
Contributing to overall web quality
Technical Details
Complete information about our crawler for webmasters and system administrators
Bot Identification
User-Agent String
Crawler IP Address
Our crawler operates from the following IP address (this list can evolve):
Bot Verification (Recommended)
The best method to verify our crawler is through reverse DNS lookup:
238.32.90.157.in-addr.arpa domain name pointer crawl.obsrvr.net.
$ host crawl.obsrvr.net
crawl.obsrvr.net has address 157.90.32.238
This double-check ensures the IP genuinely belongs to Observer.
Who We Are
Observer (obsrvr.net) is a responsible web security service that helps identify and prevent third-party risks, security vulnerabilities, and performance issues across websites.
Robots.txt Compliance
We check and respect robots.txt directives before any crawling activity
Respectful Rate Limiting
Appropriate delays between requests to prevent server overload
Contact & Support
Reach us directly at [email protected] for questions, concerns, or exclusion requests
Benefits for Your Site
Better SEO
Identify and fix issues that impact your search engine rankings.
Improved UX
Eliminate broken links and navigation issues that frustrate visitors.
Enhanced Security
Prevent your site from becoming an attack vector through compromised third-party resources. When external domains are taken over by malicious actors, your embedded content can harm visitors and tank your SEO.