Block ISP?


#1

We are receiving hundreds of suspicious requests for page loads from Digital Ocean, and ISP. It uses a wide spread of IP addresses, including at least five primary digits and at least three countries. Is there a way to block traffic through a specific ISP?


#2

You can block by AS number


#3

Sandro – Thank you. We did see that possibility in Cloudflare, but do not see an AS number for the ISP in Whosis. Do you know if they’re reported in a specific area?


#4

ISPs can have more than one AS, you’d need to collect all applicable ones (based on the IP) and then block them.


#5

But you need to be on an enterprise plan. On all plans below you can only set up a challenge


#6

Thank you both. It sounds like we may be limited to blocking a handful of ranges of IPs, unless there is a better idea?


#7

AS actually works on all plans, only countries require an Enterprise plan

You simply need to collect all applicable ASes of that ISP and off you go :slight_smile:


#8

Excellent, and again, thanks. Do you know of a way/place to collect AS’es?


#9

bgp.he.net might be starting point


#10

Sorry. You are right…