Egress IPs

When you set up Email Security using an MX/Inline deployment, your existing email provider will accept messages coming from Email Security's egress IP addresses.

Setting up egress IPs allows Cloudflare to deliver emails to your inbox.

Refer to this page for reference on what IP subnet mask ranges to use.

Additional information for O365

Office 365 does not support IPv6 addresses nor the following IPv4 subnet mask ranges:

• 104.30.32.0/19
• 134.195.26.0/23

If you use Office 365, you will have to use the broken down /24 subnet mask IP addresses. Refer to Office 365 /24 addresses for a list of supported IPv4 addresses.

IPv4

52.11.209.211
52.89.255.11
52.0.67.109
54.173.50.115
104.30.32.0/19
158.51.64.0/26
158.51.65.0/26
134.195.26.0/23

IPv6

2405:8100:c400::/38

52.58.35.43
35.157.195.63

Office 365 /24 addresses

Use these IPv4 addresses for Office 365, instead of the /19 and /23 subnets:

104.30.32.0/24
104.30.33.0/24
104.30.34.0/24
104.30.35.0/24
104.30.36.0/24
104.30.37.0/24
104.30.38.0/24
104.30.39.0/24
104.30.40.0/24
104.30.41.0/24
104.30.42.0/24
104.30.43.0/24
104.30.44.0/24
104.30.45.0/24
104.30.46.0/24
104.30.47.0/24
104.30.48.0/24
104.30.49.0/24
104.30.50.0/24
104.30.51.0/24
104.30.52.0/24
104.30.53.0/24
104.30.54.0/24
104.30.55.0/24
104.30.56.0/24
104.30.57.0/24
104.30.58.0/24
104.30.59.0/24
104.30.60.0/24
104.30.61.0/24
104.30.62.0/24
104.30.63.0/24
134.195.26.0/24
134.195.27.0/24