efa-project.org

Hi,

I really need some help on how to whitelist IP ranges. I have tried adding the subnet into the whitelist on the mailwatch website but it doesn't seem to work when you use the IP and subnet mask.

Can someone help me adding the range of IP's. I need to whitelist the mailchimp IP ranges below.

205.201.128.0/20
198.2.128.0/18
148.105.0.0/16

I believe its (kind of) classful. (but not really)

Syntax: (Note trailing dot)

Class C: 192.168.10.
Class B: 192.168.
Class A 192.

Source

Thanks. I had a look but cant work out how to add those IP ranges in.

I think I need someone to dumb it down for me lol.

To calculate the IP ranges you could use the Subnet Calculator https://mxtoolbox.com/subnetcalculator.aspx

CIDR _________ | CIDR IP Range
198.2.128.0/18 = 198.2.128.0 - 198.2.191.255

The best option is to sit down and take some time to read about CIDR notations https://en.wikipedia.org/wiki/Classless ... in_Routing

I have the CIDR ranges. I just need to know where to enter them so we can whitelist the IP ranges.

205.201.128.0/20
198.2.128.0/18
148.105.0.0/16

148.105.0.0/16 would be it in as 148.105.
Thes other to need to be put in as seperate /24's aka

205.201.128.
205.201.129.
etc
etc