Headers of http://v.whatsapp.net

HTTP/1.1 200 OK
Connection
close
Server
Yaws 2.0
Date
Tue, 25 Jul 2017 05:55:37 GMT
Last-Modified
Thu, 08 Dec 2016 02:30:20 GMT
Etag
"10B6760H"
Content-Length
3
Content-Type
text/html