shell:$ nslookup -timeout=2 -retry=1 'apphub.webex.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
apphub.webex.com	canonical name = apphub.wbx2.com.
apphub.wbx2.com	canonical name = app-hub-r.wbx2.com.
app-hub-r.wbx2.com	canonical name = prod-aore-general2.wbx2.com.
prod-aore-general2.wbx2.com	canonical name = wxt-general-ingressgateway-ds.wxtgen-prod-aore-general2.prod.infra.webex.com.
Name:	wxt-general-ingressgateway-ds.wxtgen-prod-aore-general2.prod.infra.webex.com
Address: 170.72.239.25
Name:	wxt-general-ingressgateway-ds.wxtgen-prod-aore-general2.prod.infra.webex.com
Address: 170.72.239.176
Name:	wxt-general-ingressgateway-ds.wxtgen-prod-aore-general2.prod.infra.webex.com
Address: 170.72.239.232
Name:	wxt-general-ingressgateway-ds.wxtgen-prod-aore-general2.prod.infra.webex.com
Address: 2607:fcf0:20a4:b01:235d:5df8:5703:7c92
Name:	wxt-general-ingressgateway-ds.wxtgen-prod-aore-general2.prod.infra.webex.com
Address: 2607:fcf0:20a4:b02:b7ea:435d:d35a:330f
Name:	wxt-general-ingressgateway-ds.wxtgen-prod-aore-general2.prod.infra.webex.com
Address: 2607:fcf0:20a4:b00:6814:2192:406f:65b9