What it does
Robtex indexes public DNS, IP, hostname, ASN and routing information into a linked research interface.
Start with a hostname or address and follow related DNS, IP and routing views. These links help investigate shared infrastructure while keeping associations separate from proof of common ownership. Robtex also documents JSON lookups and passive-DNS NDJSON containing first/last observation timestamps, useful for preserving historical context. Its free API is limited to 10 requests per hour per IP; IPv6 limits apply per /64 with additional shared caps per /56 and /48. Higher-limit access has a separate RapidAPI route. Treat passive history as collected observations, and verify a current operational claim against its authoritative source.
Strengths
- Linked DNS and routing research
Sources
- Robtex - Free DNS Lookup & Network Intelligence (Oct 26, 2026)
- Robtex API formats and rate limits (Oct 26, 2026)