shell:$ nslookup -timeout=2 -retry=1 'checkip.amazonaws.com'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
checkip.amazonaws.com	canonical name = checkip.check-ip.aws.a2z.com.
checkip.check-ip.aws.a2z.com	canonical name = checkip.us-east-1.prod.check-ip.aws.a2z.com.
Name:	checkip.us-east-1.prod.check-ip.aws.a2z.com
Address: 3.226.10.143
Name:	checkip.us-east-1.prod.check-ip.aws.a2z.com
Address: 34.228.101.86
Name:	checkip.us-east-1.prod.check-ip.aws.a2z.com
Address: 52.3.188.245
Name:	checkip.us-east-1.prod.check-ip.aws.a2z.com
Address: 44.206.181.219
Name:	checkip.us-east-1.prod.check-ip.aws.a2z.com
Address: 54.227.185.69
Name:	checkip.us-east-1.prod.check-ip.aws.a2z.com
Address: 54.87.207.152
Name:	checkip.us-east-1.prod.check-ip.aws.a2z.com
Address: 52.20.191.99
Name:	checkip.us-east-1.prod.check-ip.aws.a2z.com
Address: 54.167.131.97