Both mackerel.io and kcps-mackerel.io are hosted from the range below. In the event of a change, an announcement will be made in advance.
- 13.113.31.156/32
- 54.92.89.142/32
- 52.196.35.56/32
- 52.69.239.167/32
- 52.198.226.45/32
- 52.198.218.152/32
- 13.113.245.173/32
- 52.199.207.168/32
- 52.193.231.228/32
The port number is 433.
mackerel-agent also makes requests with the above-mentioned IP address and port number.
See the following page for source IP addresses for Mackerel notifications and external monitoring requests.
- FAQ・What is the source IP address for Webhook and other services’ alert notifications from Mackerel? - Mackerel Docs

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