>  Err https://repo.skype.com/deb stable/main amd74 skyptforlinux 
>     amd 64 8.73.0.92 
>   404 Not Found (IP:2362.172.144 443)

                      ^^^^
2362?
It doesn't look like a valid IP, to me.
dig repo.skype.com gives me:

repo.skype.com.        3213    IN    CNAME    repo.skype.com.edgekey.net.
repo.skype.com.edgekey.net. 7762 IN    CNAME    e4707.dspg.akamaiedge.net.
e4707.dspg.akamaiedge.net. 20    IN    A    2.20.156.179

Luciano.
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