FRITZ!Box routers doesn't trust SSL.com ECC root certificate

[JensSpanier]

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It seems like AVM FRTIZ!Box routers don't trust the root certificate "SSL.com Root Certification Authority ECC" (0x75e6dfcbc1685ba8). It's only possible to use dot.sb if the certificate check is switched off.

I already contacted AVM and they replied

I have just forwarded your request to our product management as a suggestion for improvement, so that the root certificate you mentioned will be implemented in an upcoming update.

Just wanted to let you know, that dot.sb can't currently be used with FRITZ!Box routers if the certificate check isn't switched off.

[Showfom]

We don't have that router for testing. Please request them to update their CA certificates.

[dpunkturban]

I have the same problem with the newest FRITZ!BOX (8.00) versions. dot.sb is not working on different routers.

[trkoch]

Confirmed with 8.03.

[Showfom]

Confirmed with 8.03.

Please report the issue to the vendor, they should update their CA certificates.

Currently SSL.com is the only option to issue certificates for IPv6 address, we don't have other options :(

[JensSpanier]

Maybe this is worth a look for the future: https://letsencrypt.org/2025/07/01/issuing-our-first-ip-address-certificate/

[Showfom]

Maybe this is worth a look for the future: https://letsencrypt.org/2025/07/01/issuing-our-first-ip-address-certificate/

Yes we will try to use Let's Encrypt when they have IP address certificate in public.

[trkoch]

Please report the issue to the vendor, they should update their CA certificates.

I reported the issue to AVM and referenced this issue.