Why There Are Only 13 DNS Root Name Servers
13 server names is a constraint of IPv4 TheDNSroot name servers translateURLsintoIP addresses. Each root server is a online grid of hundreds of servers in countries worldwide. However, they are identified as 13 named authorities in the DNS root zone. Hoxton / Tom Merton / Getty Images Why Are There Only 13 DNS Servers? The number 13 is a compromise between online grid reliability and performance. It’s also based on a constraint ofInternet Protocolversion 4 (IPv4), which most networks use....