shell:$ nslookup -timeout=2 -retry=1 'm.linkedin.com'
Server:		127.0.0.53
Address:	127.0.0.53#53

Non-authoritative answer:
m.linkedin.com	canonical name = touch.www.linkedin.com.
touch.www.linkedin.com	canonical name = any-na-lx.touch.www.linkedin.com.
Name:	any-na-lx.touch.www.linkedin.com
Address: 108.174.10.21
Name:	any-na-lx.touch.www.linkedin.com
Address: 2620:109:c002::6cae:a15