Subscribe to AWS Public IP Address Changes via Amazon SNS
aws.amazon.com/blogs/aws/subscribe-to-aws-public-ip-address-changes-via-amazon-sns
From the page
Saved with the link. Notes from 2007 to 2016 are mostly the page's own words, so this is probably an excerpt.
Last year we announced that the AWS Public IP Address Ranges Were Available in JSON Form. This was a quick, Friday afternoon post that turned out to be incredibly popular! Many AWS users are now…