Pour le site «Ma Classe à la Maison», lycee.cned.fr, nous avons :

$ dig lycee.cned.fr
lycee.cned.fr.        7150    IN    CNAME    lycee.cblue.be. (belgique)
lycee.cblue.be.        7150    IN    CNAME    lycee.cned.cblue.be. (belgique)
lycee.cned.cblue.be.    302    IN    CNAME lycee-proxy-s2.cned.cblue.be. (belgique)
lycee-proxy-s2.cned.cblue.be. 2876 IN    CNAME cbd126b931.10033.sucurifirewall.com. (USA)
cbd126b931.10033.sucurifirewall.com. 4862 IN A    192.124.249.33 (USA)

$ whois 192.124.249.33
[...]
OrgName:        Sucuri
OrgId:          SUCUR-2
Address:        30141 Antelope Rd
City:           Menifee
StateProv:      CA
PostalCode:     92584
Country:        US

$ dig eu.bbcollab.com
eu.bbcollab.com.    300    IN    CNAME ultra-eu-prod-842240735.eu-west-1.elb.amazonaws.com.
ultra-eu-prod-842240735.eu-west-1.elb.amazonaws.com. 59    IN A 34.241.221.109 (Ireland)
ultra-eu-prod-842240735.eu-west-1.elb.amazonaws.com. 59    IN A 52.17.226.91 (Ireland)
ultra-eu-prod-842240735.eu-west-1.elb.amazonaws.com. 59    IN A 18.203.210.21 (Ireland)
ultra-eu-prod-842240735.eu-west-1.elb.amazonaws.com. 59    IN A 54.216.5.213 (Ireland)
ultra-eu-prod-842240735.eu-west-1.elb.amazonaws.com. 59    IN A 18.203.9.12 (Ireland)
ultra-eu-prod-842240735.eu-west-1.elb.amazonaws.com. 59    IN A 34.246.207.188 (Ireland)
ultra-eu-prod-842240735.eu-west-1.elb.amazonaws.com. 59    IN A 34.249.72.137 (Ireland)
ultra-eu-prod-842240735.eu-west-1.elb.amazonaws.com. 59    IN A 52.214.104.209 (Ireland)

$ dig cvirtuelle.phm.education.gouv.fr
cvirtuelle.phm.education.gouv.fr. 1060 IN CNAME fim-foadext.phm.education.gouv.fr.
fim-foadext.phm.education.gouv.fr. 7199 IN A    193.51.147.110
$ whois 193.51.147.110
role:           Direction du Numerique pour l'Education
address:        EDUCATION NATIONALE
address:        61-65 rue Dutot
address:        75015 Paris
address:        FRANCE

voir https://twitter.com/MarcdeFalco/status/1381281278415278085
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