BGP View
Queries live BGP routing data from RIPE NCC by ASN or IP prefix. Shows which networks announce which prefixes, upstream peers, and prefix history.
Frequently asked questions
- What is BGP?
- Border Gateway Protocol — how the internet's ~70,000 networks (ASNs) announce which IP ranges they own to each other. It is the routing backbone.
- Who uses this tool?
- Network engineers, security researchers, and anyone debugging routing. If you want to verify your DDoS protection is active, check your ASN announcements here.
- Why are there multiple ASNs for my IP?
- Many networks announce the same prefix from multiple ASNs for anycast routing (CDNs, public DNS). Actual traffic follows the longest prefix match.