shell:$ nslookup -timeout=2 -retry=1 'flutter.customdomains.okta.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
flutter.customdomains.okta.com	canonical name = ok9-custom-crtrs.okta.com.
ok9-custom-crtrs.okta.com	canonical name = ok9-custom-crtrs.oktaedge.okta.com.
ok9-custom-crtrs.oktaedge.okta.com	canonical name = ac4b547508e00da8e.awsglobalaccelerator.com.
Name:	ac4b547508e00da8e.awsglobalaccelerator.com
Address: 3.33.238.178
Name:	ac4b547508e00da8e.awsglobalaccelerator.com
Address: 15.197.195.200