R3.o.lencr.org

It is a Windows browser hijacking site that inserts ads into webpages, so it is a form of annoying (but not dangerous) malware. As your iPhone doesn’t run Windows it shouldn’t be a problem for you, but you should not go to any websites or use any apps that link to it because they are probably untrustworthy in other areas.

If apps from the app store are contacting it you should report it to Apple. If you are running apps that you didn’t get from the app store you are at risk for other reasons, and you should stop using them and remove the enterprise profile that they need.

To re-iterate. This site is for things like SLL OCSP verification for certificates.

you can read more about it here:

https://letsencrypt.org/docs/lencr.org/

there is a windows virus which has the same name as the domain, because I believe the virus used the domain as part of some encryption.

you’re safe… it’s normal from all the research I can do

Hello;

you shouldn’t believe everything on the first few hits on Google search.

This domain is owned and operated by Let’s Encrypt. It was flagged up to security teams at places like IBM before (probably due to the massive amounts of chatter about it that you found, or perhaps there is an actual Windows virus by the same name) but the domain itself was recategorised by them 3 minutes later as IT Security not malware.

the domain appears safe. Though I can’t tell you what it is for.

Hi NellaKay5,

Welcome to Apple Support Communities. We understand that you have questions about something on your iPhone. We'd like to help.

Can you tell us more about what is happening? Where are you seeing that link on your iPhone? Which iOS are you currently running on your device? Keeping it up to date can ensure that it's working as expected so that's always a good first step to check. You can find the exact version you're running in Settings > General > About.

Let us know and we'll go from there.

Take care!