Apache Webserver Surpasses 50 Million Website Mark

chris81 writes "For the first time ever, the Apache Web Server is powering more than 50 million websites, according to Netcraft's Web Server Survey for October. Although relative share fell by 0.67 percent, the total number of sites powered by Apache grew to over 52 million. Microsoft's IIS finished second with more than 15 million sites served."

Comments

Re:...and

[Anonymous Coward]

Not 23 million actual servers, just 23 million different sites. Probably hosted on just a few hundred thousand physical servers. Netcraft "active sites" calculation is based on an estimate from contacting each server IP address a few times using a selection of the registered names and then comparing them. e.g. if you host 4000 domains which all say "We own this domain $domain, why not offer us money for it?" Netcraft will notice that 4000 names lead to that IP address, connect say 14 times, get a very similar response each time and conclude that there is only one active site.

23 million servers would represent almost 1% of all unicast IPv4 addresses (and AFAIK Netcraft don't look for IPv6-only servers)