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

Non-authoritative answer:
Name:	mx.yomobile.com
Address: 100.50.128.157
Name:	mx.yomobile.com
Address: 34.236.172.93