shell:$ nslookup -timeout=2 -retry=1 'tsock.us1.twilio.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
tsock.us1.twilio.com	canonical name = tsock.us1.api-lb.twilio.com.
tsock.us1.api-lb.twilio.com	canonical name = self-healing.rtd-twilsock-edge.us1.api-lb.twilio.com.
self-healing.rtd-twilsock-edge.us1.api-lb.twilio.com	canonical name = rtd-twilsock-b-418010594.us-east-1.elb.amazonaws.com.
Name:	rtd-twilsock-b-418010594.us-east-1.elb.amazonaws.com
Address: 52.86.247.158
Name:	rtd-twilsock-b-418010594.us-east-1.elb.amazonaws.com
Address: 54.226.158.234
Name:	rtd-twilsock-b-418010594.us-east-1.elb.amazonaws.com
Address: 54.236.216.199
Name:	rtd-twilsock-b-418010594.us-east-1.elb.amazonaws.com
Address: 18.210.149.210
Name:	rtd-twilsock-b-418010594.us-east-1.elb.amazonaws.com
Address: 34.197.107.105
Name:	rtd-twilsock-b-418010594.us-east-1.elb.amazonaws.com
Address: 54.197.224.83
Name:	rtd-twilsock-b-418010594.us-east-1.elb.amazonaws.com
Address: 44.205.53.21
Name:	rtd-twilsock-b-418010594.us-east-1.elb.amazonaws.com
Address: 34.231.174.100