Some IPs missing from ranges

[yeago]

54.157.217.95

Shows as ec2-54-157-217-95.compute-1.amazonaws.com according to various IP lookup sites but amazon denies it according to their JSON. I know its not part of this package... but any idea what's going on here?

[aleho]

There's 54.156.0.0/14 in the JSON.

This would amount for IPs 54.156.0.1 – 54.159.255.254 according to CIDR.