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List of AWS availability zones for each AWS region
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

Owner

neilstuartcraig commented Oct 23, 2015

If you see errors or have extra updates, please let me know via a comment

There is a now ap-southeast-2c

what are AWS availability zones?

"What are AWS availability zones?"

This website explains it nicely:

http://lmgtfy.com/?q=what+are+AWS+availability+zones%3F

Your "Number of AZs" for Sydney should be 3 now that you've added ap-southeast-2c.

The list is currently out of date.

The following regions are missing:

  • Mumbai
  • Seoul
  • Beijing
  • GovCloud

The following new AZs are missing:

  • us-east-1d
  • us-west-1c

jsonmaur commented Oct 4, 2016

An updated list as of October 2016 can be found here: https://github.com/jsonmaur/aws-regions

seigel commented Oct 20, 2016

New ohio zone I think yesterday

Does anybody know how to get in contact with a datacentre of this list?

bconklin commented Feb 7, 2017

When will the Canada Region and AZs be added?

This is outdated as for example there are 5 AZs in us-east-1

us-east-1 has 5 AZs, ["us-east-1a", "us-east-1b", "us-east-1c", "us-east-1d", "us-east-1e"]

us-east-1
US East (N. Virginia)
us-east-2
US East (Ohio)
us-west-1
US West (N. California)
us-west-2
US West (Oregon)
ca-central-1
Canada (Central)
eu-west-1
EU (Ireland)
eu-central-1
EU (Frankfurt)
eu-west-2
EU (London)
ap-northeast-1
Asia Pacific (Tokyo)
ap-northeast-2
Asia Pacific (Seoul)
ap-southeast-1
Asia Pacific (Singapore)
ap-southeast-2
Asia Pacific (Sydney)
ap-south-1
Asia Pacific (Mumbai)
sa-east-1
South America (São Paulo)

Full List as of April 2017;

North Virginia
us-east-1a
us-east-1b
us-east-1c
us-east-1d
us-east-1e

Ohio
us-east-2a
us-east-2b
us-east-2c

North Carolina
us-west-1b
us-west-1c

Oregon
us-west-2a
us-west-2b
us-west-2c

Canada
ca-central-1a
ca-central-1b

Ireland
eu-west-1a
eu-west-1b
eu-west-1c

Frankfurt
eu-central-1a
eu-central-1b

London
eu-west-2a
eu-west-2b

Singapore
ap-southeast-1a
ap-southeast-1b

Sydney
ap-southeast-2a
ap-southeast-2b
ap-southeast-2c

Seoul
ap-northeast-2a
ap-northeast-2c

Tokyo
ap-northeast-1a
ap-northeast-1c

Mumbai
ap-south-1a
ap-south-1b

Sao Paulo
sa-east-1a
sa-east-1b
sa-east-1c

us west is north California

ralph-tice commented May 24, 2017

These aren't accurate because AZs are masked/scrambled across accounts. See https://alestic.com/2009/07/ec2-availability-zones/ for a detailed writeup.

eu-central-1c is missing

odupuy commented Jun 29, 2017

There is now us-east-1f created between the 23rd of June and today 29th.

samber commented Jul 10, 2017

eu-central-1c

jimisan commented Jul 17, 2017

it helps.

The number for Sydney says 2 AZs but there are three listed: ap-southeast-2a, ap-southeast-2b, ap-southeast-2c

ytn3rd commented Nov 1, 2017

From the API (Querying describeRegions followed by multiple calls to describeAvailabilityZone)

ap-northeast-1: Asia Pacific (Tokyo)

  • ap-northeast-1a
  • ap-northeast-1c

ap-northeast-2: Asia Pacific (Seoul)

  • ap-northeast-2a
  • ap-northeast-2c

ap-south-1: Asia Pacific (Mumbai)

  • ap-south-1a
  • ap-south-1b

ap-southeast-1: Asia Pacific (Singapore)

  • ap-southeast-1a
  • ap-southeast-1b

ap-southeast-2: Asia Pacific (Sydney)

  • ap-southeast-2a
  • ap-southeast-2b
  • ap-southeast-2c

ca-central-1: Canada (Central)

  • ca-central-1a
  • ca-central-1b

eu-central-1: EU (Frankfurt)

  • eu-central-1a
  • eu-central-1b
  • eu-central-1c

eu-west-1: EU (Ireland)

  • eu-west-1a
  • eu-west-1b
  • eu-west-1c

eu-west-2: EU (London)

  • eu-west-2a
  • eu-west-2b

sa-east-1: South America (São Paulo)

  • sa-east-1a
  • sa-east-1b
  • sa-east-1c

us-east-1: US East (N. Virginia)

  • us-east-1a
  • us-east-1b
  • us-east-1c
  • us-east-1d
  • us-east-1e
  • us-east-1f

us-east-2: US East (Ohio)

  • us-east-2a
  • us-east-2b
  • us-east-2c

us-west-1: US West (N. California)

  • us-west-1a
  • us-west-1c

us-west-2: US West (Oregon)

  • us-west-2a
  • us-west-2b
  • us-west-2c
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