View Full Version : Zmanda S3 IP addresses

July 11th, 2009, 03:55 PM
We have 2 WANs, and I would like to configure my router to use the non-default WAN for communications with (backups to) S3.

How can I find out which S3 servers my Zmanda Cloud Backup is using? (I need their IP addresses).


July 13th, 2009, 09:03 PM
Amazon S3 does not use a fixed IP address, or even a small group of IP addresses, making setting up routes difficult. This is part of Amazon S3's design; it helps provide high availability and spread out the load.

A quick look suggests the following (very large) IP address ranges: - (CIDR: - (CIDR: - (CIDR:
The above list may not be exhaustive and may encomposs other services as well.