ASNs
ASNs are an incredibly powerful tool, but there can be unseen problems caused by using a VPN to route them.
Consider them a last resort, and never add huge ASNs like those for Google/Amazon etc. You’ll end up routing anything on AWS etc over the VPN
Generally, if you’re unsure, never add an ASN, it won’t fix that one site that just won’t work
Every subnet on the internet is managed by an organisation. They’re grouped into Autonomous System Numbers (ASNs)
Occasionally, it can be useful to route an entire ASN over the VPN
Looking up ASNs
The ASN page contains a lookup tool that can tell what ASN a site belongs to.
Simply enter the domain into the lookup form and click Lookup
Once the lookup is complete, you’ll be presented with the results, including a count of subnets and IP count.
