Compare software

Robtex vs ASN Lookup Tool and Traceroute Server: catalog facts
Robtex	ASN Lookup Tool and Traceroute Server
Free Lookups are free on the website.	Free Free and open source under the MIT license.
Web	Self-hosted, Command line
Many lookup types from one search page Covers AS numbers and AS macros as well as domains and IPs	Looks up ASN, RPKI, BGP and IP information Supports bulk and JSON output
Web service only Research shows lookups rather than any monitoring or alerting	Some reconnaissance features use Shodan.
Web application	Downloadable app, Self-hosted
Closed source	Open source
License not stated	License: MIT
No account needed	Not stated if an account is needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked October 8, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.