Hi,apt-get with deb.debian.org in the sources.list fails, because the dns is resolved to an address that does not answer.
$ dig +noall +answer deb.debian.org deb.debian.org. 5 IN CNAME debian.map.fastlydns.net. debian.map.fastlydns.net. 5 IN A 146.75.118.132 -- Wolfram Wadepohl Storopack Deutschland GmbH & Co. KG