How to find all of an ISP's ASNs

colin johnston colinj at gt86car.org.uk
Tue Oct 25 19:27:27 UTC 2016


> On 25 Oct 2016, at 18:41, Gary Baribault <gary at baribault.net> wrote:
> 
> Hi folks, how to I find all ASNs that belong to an ISP? I want to block access to my IoT cameras from the world other than the two local major ISPs (keeping last Friday in mind!)
> 
> Gary B
> 
> 

ripe atlas has this info

Colin



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