shell:$ nslookup -timeout=2 -retry=1 'large.40160-40303.geocity.unifieddeliverynetwork.net'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
large.40160-40303.geocity.unifieddeliverynetwork.net	canonical name = spthreatintel.silentpush.com.
Name:	spthreatintel.silentpush.com
Address: 49.12.103.225