Found 2 books

Managing Mission-Critical Domains and DNS

[en] Managing Mission-Critical Domains and DNS Packt Publishing

Jeftovic, Mark

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Managing Mission - Critical Domains and DNS · Demystifying Nameservers, DNS, and Domain Names

[en] Managing Mission - Critical Domains and DNS · Demystifying Nameservers, DNS, and Domain Names Packt Publishing

Jeftovic, Mark

download read it!