Amazon EC2 Public IP Ranges [updated in 2011]

Where can I find the public IP addresses that used by Amazon AWS? I think you might have such a question if you use Amazon heavily for your infrastructure. Here comes a post from Amazon’s official websites, it answers this question perfectly.

Dear Amazon EC2 customer,
We are pleased to announce that as part of our ongoing expansion, we have added a new public IP range. The current Amazon EC2 public address ranges are:

US East (Northern Virginia):

216.182.224.0/20 (216.182.224.0 - 216.182.239.255)
72.44.32.0/19 (72.44.32.0 - 72.44.63.255)
67.202.0.0/18 (67.202.0.0 - 67.202.63.255)
75.101.128.0/17 (75.101.128.0 - 75.101.255.255)
174.129.0.0/16 (174.129.0.0 - 174.129.255.255)
204.236.192.0/18 (204.236.192.0 - 204.236.255.255)
184.73.0.0/16 (184.73.0.0 – 184.73.255.255)
184.72.128.0/17 (184.72.128.0 - 184.72.255.255)
184.72.64.0/18 (184.72.64.0 - 184.72.127.255)
50.16.0.0/15 (50.16.0.0 - 50.17.255.255)
50.19.0.0/16 (50.19.0.0 - 50.19.255.255) NEW

US West (Northern California):

204.236.128.0/18 (216.236.128.0 - 216.236.191.255)
184.72.0.0/18 (184.72.0.0 – 184.72.63.255)
50.18.0.0/17 (50.18.0.0 - 50.18.127.255) NEW

EU (Ireland):

79.125.0.0/17 (79.125.0.0 - 79.125.127.255)
46.51.128.0/18 (46.51.128.0 - 46.51.191.255)
46.51.192.0/20 (46.51.192.0 - 46.51.207.255)
46.137.0.0/17 (46.137.0.0 - 46.137.127.255)

Asia Pacific (Singapore)

175.41.128.0/18 (175.41.128.0 - 175.41.191.255)
122.248.192.0/18 (122.248.192.0 - 122.248.255.255)

Asia Pacific (Tokyo)

175.41.192.0/18 (175.41.192.0 - 175.41.255.255)

The Amazon EC2 Team – Updated in 2011/04/21

Now, Let’s counter how many IP addresses Amazon has.

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One thought on “Amazon EC2 Public IP Ranges [updated in 2011]

  1. a memorable day today… Quora, Foursquare and Reddit have been down for more than 2 hours! Because of AWS issues in the US east region. Luckily our service isn’t affected.

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