BGP Tools is one of the popular sites to query ASN, BGP, Prefixes. There are many other tools. If you are not patient enough to wait for 24 hours, has more up to date information and updates every 6 hours.

PeeringDB is a must if you want to keep your ASN information updated. This has been used by many other sites as the source to update their views.

Leave a Reply

Your email address will not be published. Required fields are marked *