| AWS region code | AWS region name | Number of AZs | AZ names |
|---|---|---|---|
| us-east-1 | Virginia | 4 | us-east-1a, us-east-1b, us-east-1c, us-east-1e |
| us-west-1 | N. California | 2 | us-west-1a, us-west-1b |
| us-west-2 | Oregon | 3 | us-west-2a, us-west-2b, us-west-2c |
| eu-west-1 | Ireland | 3 | eu-west-1a, eu-west-1b, eu-west-1c |
| eu-central-1 | Frankfurt | 2 | eu-central-1a, eu-central-1b |
| ap-southeast-1 | Singapore | 2 | ap-southeast-1a, ap-southeast-1b |
| ap-southeast-2 | Sydney | 2 | ap-southeast-2a, ap-southeast-2b, ap-southeast-2c |
| ap-northeast-1 | Tokyo | 2 | ap-northeast-1a, ap-northeast-1c |
| sa-east-1 | Sao Paulo | 3 | sa-east-1a, sa-east-1b, sa-east-1c |
NOTE: This data pertains to the AWS EC2 service, other AWS services (e.g. RDS, S3, ...) may differ
Information correct as of 23rd October 2015