shell:$ nslookup -timeout=2 -retry=1 'auth.mtn.ci'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
auth.mtn.ci	canonical name = mtnci-prod-cd-cwgqwhfmrhzxdi5q.edge.mtn.auth0.com.
mtnci-prod-cd-cwgqwhfmrhzxdi5q.edge.mtn.auth0.com	canonical name = mtnci-prod.mtn.auth0.com.
mtnci-prod.mtn.auth0.com	canonical name = f1vgix.mtn.auth0.com.pivot.prod.auth0edge.com.
f1vgix.mtn.auth0.com.pivot.prod.auth0edge.com	canonical name = ingress.mtn.auth0.com.cdn.cloudflare.net.
Name:	ingress.mtn.auth0.com.cdn.cloudflare.net
Address: 172.64.147.187
Name:	ingress.mtn.auth0.com.cdn.cloudflare.net
Address: 104.18.40.69
Name:	ingress.mtn.auth0.com.cdn.cloudflare.net
Address: 2606:4700:4405::ac40:93bb
Name:	ingress.mtn.auth0.com.cdn.cloudflare.net
Address: 2606:4700:440c::6812:2845