A list of default usernames for Linux AMI's in Amazon's EC2.
- Amazon Linux - ec2-user
- Ubuntu - ubuntu, root
- Debian - admin, root
- RHEL 6.4 and later - ec2-user
- RHEL 6.3 and earlier - root
- Fedora - fedora, ec2-user, root
- Centos - centos, root
- SUSE- ec2-user, root
- BitNami - bitnami
- TurnKey - root
- NanoStack - ubuntu
- FreeBSD - ec2-user
- OmniOS - root
Amazon makes available a hidden API endpoint which lists the IP address ranges used for EC2.