SECTIGO is using the following IP addresses to perform DCV (domain control validation):
- 91.199.212.132 - secure.trust-provider.net
- 91.199.212.148 - secure.trust-provider.com
- 91.199.212.133 - mail2.comodoca.com
- 91.199.212.151 - secure.comodo.com
- 91.199.212.176 - www.comodo.com
- 91.199.212.52 - crt.sectigo.com
- 91.212.12.133 - opsmail.dc.sectigo.com