DNS (Domain Name System) ialah sebuah sistem yang menyimpan informasi tentang nama host maupun nama domain dalam bentuk basis data tersebar (distributed database) di dalam jaringan komputer. Fungsi DNS di Internet adalah untuk mengerjakan pengalamatan dan penjaluran (routing), sehingga saat kita mengetikkan misal : www.google.com maka DNS server akan mencarikan alamat IP address dari host yang bersangkutan. Alamat DNS yang disediakan oleh provider ISP seringkali kinerjanya lebih lambat bila dibandingkan DNS server milik Google dan OpenDNS. (Definisi lambat disini adalah saat pencarian (lookup) alamat website di internet) Maka untuk mengatasi masalah diatas kita perlu mengganti setting...

If you have control over your DNS you can setup 'wildcard hosting', which means you can have a webserver accept connections for any given subdomain. This can be enormously useful for community websites, or other hosting purposes. One popular site which uses this technique is Livejournal, another less obvious one is Slashdot.org. The end goal of using wildcard hosting is that you'll be able to setup a webserver for a domain, such as example.com which will serve requests for any subdomain. For example the following would all be valid hosts: * foo.example.com * private.example.com * cvs.example.com *...