For various Afternic landers, I checked on my browser and found that the "not secure message was showing up.
You may want to check if there are issues with TLS certificates. I started checking some of the landers using the free online web security checking services. There definitely are differences in the security between the different landers. And that may impact visibility, depending on what devices, including browser security settings, may be involved.
Note that the TLS issues may not be readily understood, depending on how your browser handles a redirect from an insecure site. Some browser settings may allow an automatic redirect from
http to https, without prompting for whether to proceed. Other higher security settings may simply just block the http version, without prompting for whether you wish to proceed.
So far, on checking the various landers, reviewing about 18 different Nameservers, only
Squadhelp and Dan appeared to be unencumbered by these security issues. All of the Afternic landers, from Ns1 through Ns6, appeared to be impacted.
A more thorough explanation of some TLS issues was mentioned here on the Daaz
TLS Issues thread