shell:$ nslookup -timeout=2 -retry=1 'opensignal-nsu.akamaihd.net'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
opensignal-nsu.akamaihd.net	canonical name = a2047.g.akamai.net.
Name:	a2047.g.akamai.net
Address: 23.199.54.5
Name:	a2047.g.akamai.net
Address: 23.199.54.6
Name:	a2047.g.akamai.net
Address: 23.199.54.9
Name:	a2047.g.akamai.net
Address: 23.199.54.11
Name:	a2047.g.akamai.net
Address: 23.199.54.8
Name:	a2047.g.akamai.net
Address: 23.199.54.10
Name:	a2047.g.akamai.net
Address: 23.199.54.13
Name:	a2047.g.akamai.net
Address: 23.199.54.12
Name:	a2047.g.akamai.net
Address: 23.199.54.7