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01. 46.7 M google.com. Google 02. 22.5 M secureserver.net. GoDaddy Hosted Mail 03. 19.7 M registrar-servers.com. Namecheap 04. 7.4 M outlook.com. Microsoft 05. 6.9 M googlemail.com. Google2 06. 3.4 M ovh.net. OVH / OVH Groupe SAS 07. 2.4 M mailspamprotection.com. SiteGround 08. 1.8 M hostedemail.com. Tucows / OpenSRS 09. 1.7 M 1and1.com. IONOS / United Internet AG 10. 1.6 M zoho.com. Zoho Corporation 11. 1.6 M jellyfish.systems. Namecheap 12. 1.3 M one.com. One.com 13. 1.3 M qq.com. Tencent QQ 14. 1.2 M ionos.com. IONOS / United Internet AG 15. 1 M gandi.net. Gandi SAS / Your.Online 16. 1 M rzone.de. Strato AG / United Internet AG 17. 992 K kundenserver.de. IONOS / United Internet AG 18. 973 K 123-reg.co.uk. 123 Reg 19. 835 K h-email.net Unknown / parked domains?3 20. 765 K oxcs.net EuroDNS / Datacenter Group

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01. 46.7 M google.com. Google 02. 22.5 M secureserver.net. GoDaddy Hosted Mail 03. 19.7 M registrar-servers.com. Namecheap 04. 7.4 M outlook.com. Microsoft 05. 6.9 M googlemail.com. Google2 06. 3.4 M ovh.net. OVH / OVH Groupe SAS 07. 2.4 M mailspamprotection.com. SiteGround 08. 1.8 M hostedemail.com. Tucows / OpenSRS 09. 1.7 M 1and1.com. IONOS / United Internet AG 10. 1.6 M zoho.com. Zoho Corporation 11. 1.6 M jellyfish.systems. Namecheap 12. 1.3 M one.com. One.com 13. 1.3 M qq.com. Tencent QQ 14. 1.2 M ionos.com. IONOS / United Internet AG 15. 1 M gandi.net. Gandi SAS / Your.Online 16. 1 M rzone.de. Strato AG / United Internet AG 17. 992 K kundenserver.de. IONOS / United Internet AG 18. 973 K 123-reg.co.uk. 123 Reg 19. 835 K h-email.net Unknown / parked domains?3 20. 765 K oxcs.net EuroDNS / Datacenter Group
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Jan Schaumann (jschauma@mstdn.social)'s status on Saturday, 18-Mar-2023 17:46:23 UTC Jan Schaumann
in reply to

Now many domains that include alt1.aspmx.l.google.com. as an MX will likely also include alt2.aspmx.l.google.com., so let's flatten these numbers by MX domain frequency, which breaks down our data set to 21 million unique domains.
The top 20 are:

In conversation Saturday, 18-Mar-2023 17:46:23 UTC from mstdn.social permalink