shell:$ nslookup -timeout=2 -retry=1 'trk.iecl.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
trk.iecl.com	canonical name = mkto-sn020133.com.
Name:	mkto-sn020133.com
Address: 104.17.73.206
Name:	mkto-sn020133.com
Address: 104.17.72.206
Name:	mkto-sn020133.com
Address: 104.17.74.206
Name:	mkto-sn020133.com
Address: 104.17.70.206
Name:	mkto-sn020133.com
Address: 104.17.71.206