We are using only one webserver, behind a single IP address.

Hello Corion,

> ..a single IP address..

which one? https://www.whatsmydns.net/#A/perlmonks.org gives the 66.39.54.27

but both still respond to my pm-monitor.pl

perlmonks.org @ https://66.39.54.27/index.pl?           200 OK 21.6182
+ Kb (22137 bytes) in 9.123193 seconds 2.3696 Kb/s
perlmonks.org @ https://216.92.34.251/index.pl?         200 OK 21.6182
+ Kb (22137 bytes) in 0.974809 seconds 22.1768 Kb/s
[download]

As side note (but this might be error on my part) when I connect with the browser to the above IPs I get the certificate for css.perlmonks.org and the same from chrome: a certificate named css.perlmonks.org and no Subject nor CNs.

Similarly from commandline:

openssl s_client -showcerts -connect perlmonks.org:443

CONNECTED(00000264)
depth=2 C = US, ST = New Jersey, L = Jersey City, O = The USERTRUST Ne
+twork, CN = USERTrust RSA Certification Authority
verify error:num=20:unable to get local issuer certificate
---
Certificate chain
 0 s:                                                    <------ weird
+ to be empty
   i:/C=US/ST=New Jersey/L=Jersey City/O=The USERTRUST Network/CN=USER
+Trust RSA Domain Validation Secure Server CA
...
[download]

L*

There are no rules, there are no thumbs..
Reinvent the wheel, then learn The Wheel; may be one day you reinvent one of THE WHEELS.

I'd guess it's 66, as 216 is blazing fast.

Update: Not fast anymore. Maybe I was just lucky.

map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]

OK strange, did I totally misremember this or did it change recently?

I seem to remember having discussions about 2 servers having different certificates.

Cheers Rolf
_{(addicted to the Perl Programming Language :)
see Wikisyntax for the Monastery}

It has changed recently for easier log analysis related to the bot attacks/scraping raids.
map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]