Usually a single machine placed in aA private residenceserver can be used to host one or more websites from a usually consumer-grade [[broadband]] connection. These can be purpose-built machines or more commonly old PCs. Some ISPs actively attempt to block home servers by disallowing incoming requests to [[Transmission Control Protocol|TCP]] port 80 of the user's connection and by refusing to provide [[static IP address]]es. A common way to attain a reliable DNS host name is by creating an account with a [[dynamic DNS]] service. A dynamic [[DNS]] service will automatically change the IP address that a [[URL]] points to when the IP address changes.<ref>{{Cite journal |doi = 10.1109/TCE.2006.1605033|title = An integrated home server for communication, broadcast reception, and home automation|journal = IEEE Transactions on Consumer Electronics|volume = 52|pages = 104–109|year = 2006|last1 = Intark Han|last2 = Hong-Shik Park|last3 = Youn-Kwae Jeong|last4 = Kwang-Roh Park}}</ref>
Some specific types of hosting provided by web host service providers:
