Allow firewall exceptions for Kakao APIs such as Kakao Login

Since general public institutions or banks operate closed networks for security reasons, there are some restrictions while using Kakao Login such as some IPs and ports are blocked. For this case, you need to add the following IP addresses to your own firewall allowlist list. Note that these domains only support basic HTTPS/SSL communication over 443 port.

Here are the domains the Kakao platform uses:

Domain Description IP address
https://kauth.kakao.com Used when issuing OAuth2 authentication tokens and
when users agree to provide personal information to third parties.
203.133.166.32
27.0.237.15
https://kapi.kakao.com Used to retrieve user information or to call other Kakao APIs after obtaining tokens. 203.133.166.33
27.0.237.16
https://accounts.kakao.com Used to log into Kakao with user’s Kakao ID and password if the Simple login does not work. 211.231.99.67
110.76.142.110
https://auth.kakao.com Used for Kakao Account on mobile devices. 219.249.227.143
210.103.240.15
110.76.141.64
https://dapi.kakao.com Used for the Search APIs and Local APIs. 211.231.99.209
203.217.239.16
211.249.220.147
121.53.104.36
https://apps.kakao.com Used for the function to allow or block Kakao Talk messages. 27.0.237.17
203.133.166.34
https://talk-apps.kakao.com Used for the Kakao Talk universal link service. 110.76.142.54
27.0.236.28
https://kakaoi-newtone-openapi.kakao.com Used for the Speech APIs. 121.53.202.215

NOTE:

(This post was updated on August 24, 2022.)