1.1.1.1 unreachable, 1.0.0.1 works

Hello,

I’m having problems with reaching DNS 1.1.1.1. It seems like there’s a correct route to it but it can’t connect to DNS nor the website under https:// 1.1.1.1/. Interestingly using 1.0.0.1 as DNS works and also https://1.0.0.1/ works fine.

Debug information:

C:\>tracert 1.1.1.1
  1    <1 ms    <1 ms    <1 ms  10.0.0.1
  2    15 ms    10 ms     8 ms  ipbcc2abfe.dynamic.kabel-deutschland.de [188.194.171.254]
  3    11 ms     8 ms    10 ms  ip5886dca6.static.kabel-deutschland.de [88.134.220.166]
  4    15 ms    16 ms    15 ms  83-169-156-166.static.superkabel.de [83.169.156.166]
  5    16 ms    17 ms    17 ms  one.one.one.one [1.1.1.1]

C:\>tracert 1.0.0.1
  1     1 ms    <1 ms    <1 ms  10.0.0.1
  2    59 ms    35 ms     8 ms  ipbcc2abfe.dynamic.kabel-deutschland.de [188.194.171.254]
  3    11 ms    10 ms    10 ms  ip5886dca6.static.kabel-deutschland.de [88.134.220.166]
  4    18 ms    15 ms    20 ms  83-169-156-166.static.superkabel.de [83.169.156.166]
  5    17 ms    15 ms    16 ms  145.254.3.102
  6    19 ms    14 ms    16 ms  145.254.2.201
  7    20 ms    16 ms    14 ms  de-cix-munich.as13335.net [80.81.202.9]
  8    21 ms    15 ms    18 ms  one.one.one.one [1.0.0.1]

C:\>nslookup -class=chaos -type=txt id.server 1.1.1.1
DNS request timed out.
    timeout was 2 seconds.

C:\>nslookup -class=chaos -type=txt id.server 1.0.0.1
Server:  one.one.one.one
Address:  1.0.0.1

Nicht autorisierende Antwort:
id.server       text =

        "MUC"

C:\>nslookup -vc -class=chaos -type=txt id.server 1.1.1.1
Server:  UnKnown
Address:  1.1.1.1

*** id.server wurde von UnKnown nicht gefunden: Unspecified error.

C:\>nslookup -vc -class=chaos -type=txt id.server 1.0.0.1
Server:  one.one.one.one
Address:  1.0.0.1

Nicht autorisierende Antwort:
id.server       text =

        "MUC"

Best regards
Markus