BGP AS Lookup

RIPEstat is a free information service for Internet-related data and analytics. It resolves Border Gateway Protocol (BGP) Autonomous System Number (ASN) and IP address registration records using ARIN's RDAP web search interface, returning structured ownership and registry information. Users can look up ASNs, IP addresses, prefixes, and hostnames, with routing and registration context drawn from over 35 datasets. The result shows registration details, routing paths, and related network metadata in a single view. RIPEstat distinguishes itself through its integration of multiple datasets and its dedicated user interface. While other BGP lookup tools focus on routing tables or origin AS data, RIPEstat combines registration context, routing history, and visualisations from a large collection of sources within one web interface. The site is currently undergoing a UI rework to improve stability and provide a path for new functionality, and it offers a Data API for developers who want to embed the data in custom applications or alerts. Its status as an established service operated by a regional internet registry organization adds a layer of authority for network operators and researchers.