What IP addresses do Sectigo DCV requests originate from?

Austin Lowery

Sectigo's DCV request origin IPs are:

178.255.81.12
178.255.81.13
91.199.212.132
199.66.201.132
91.199.212.148
91.199.212.151

Please ensure that these IP addresses are whitelisted for port 53 ( TCP & UDP ) and port 80.

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