Does that even work anymore? I thought plain IP addresses were a thing of the past ever since we started doing virtual hosts 25 years ago. I just get a 503 when I use the address you posted...
The easiest way to accomplish this is to add the address into your .hosts file (as sibling post says) and just use the name.
"scihub.invalid 192.168.19.17"
Literally DNS-over-sneakernet