Support & configuration
IP addresses
Anthropic services use fixed IP addresses for both inbound and outbound connections. You can use these addresses to configure your firewall rules for secure access to the Anthropic API and Console. These addresses will not change without notice.
Inbound IP addresses
These are the IP addresses where Anthropic services receive incoming connections.
IPv4
160.79.104.0/23
IPv6
2607:6bc0::/48
Outbound IP addresses
These are the stable IP addresses that Anthropic uses for outbound requests (for example, when making MCP tool calls to external servers).