Bookboost egress IP addresses

Some Bookboost features require connections to customer-owned servers. These servers must allow connections from the IP addresses below. New addresses will be published at least 30 days in advance.

IPv4 addresses3

The same list as plain text, one address per line, for firewalls that read an allowlist from a URL: https://ips.bookboost.io/egress-v4.txt

IPv6

We connect over IPv4 only. If we start connecting over IPv6, we will publish the addresses at /egress-v6.txt with the same notice as any other new address.

How we announce changes

We add a new address to this page and to the plain-text list at least 30 days before we start using it. We remove an address only after we have stopped using it.

Change history