|Internet Service Provider (ISP):||AS14618 Amazon.com, Inc.|
|Country:||United States of America|
|Est. location data:||39.0437,-77.4875|
In fact, not only web servers but any online device can be identified with this method, and allowing us to look up some basic information about the IP-address you provided.
The standard of IP-addresses has been IPv4 for quite long, which, in a human readable format, consists of four numbers, each ranges from 0 to 255: e.g. 18.104.22.168. This allows ~4,294,967,296 different IP-addresses to be assigned to different devices (and yes, that's a lot).
However, due to so many devices connecting to the internet, a newer standard has been finalized to allow even more connections - that is IPv6. Learn more about the background here: https://en.wikipedia.org/wiki/IP_address