shell:$ nslookup -timeout=2 -retry=1 'b2b.viber.com'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
b2b.viber.com	canonical name = 7451889.group39.sites.hubspot.net.
7451889.group39.sites.hubspot.net	canonical name = group39.sites.hscoscdn30.net.
Name:	group39.sites.hscoscdn30.net
Address: 199.60.103.29
Name:	group39.sites.hscoscdn30.net
Address: 199.60.103.227
Name:	group39.sites.hscoscdn30.net
Address: 2606:2c40::c73c:671d
Name:	group39.sites.hscoscdn30.net
Address: 2606:2c40::c73c:67e3