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I have a computer that is accessible from the Internet and it has a real static IP. As I know, the IP could be "tied" to one or many domain names which should be registered at a domain registrar.
In order to clarify some aspects, I have a few simple questions related to this subject:

1) just TECHNICALLY, is there any quality or performance difference between "Accredited Registrars"? ( http://www.icann.org/en/registrars/accredited-list.html )

2) Is it mandatory to maintain a personal DNS service like BIND or PowerDNS on my server?

3) If the DNS service is not mandatory, but I install it, what benefits it could offer?

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closed as off topic by studiohack♦ Dec 3 '11 at 22:19

Questions on Super User are expected to generally relate to computer software or computer hardware, within the scope defined in the faq.

1 Answer

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1) Not that I know of.

2) No, most registrars will offer free DNS as part of the registration, even if they don't there are options other than self hosting DNS (there are free Name Servers that will let you setup your domain via them for example)

3) The only performance benefit will be faster Domain Resolution for you locally and anyone near to you (same ISP) but it'd not be that much faster. Administering your own DNS gives you more control over the records which can be a benefit (depends how you look at it)

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I'd agree with all of this - you really only get a benefit from local DNS if you either run a large network, or you have a large number of DNS lookups that are causing a bottleneck. – Rory Alsop Dec 3 '11 at 21:14
Well, as an example: IP 1.2.3.4, assigned domain "mydomain.com". If I want to have subdomains "a.b ... z.mydomain.com" (depth 1 or more) and manage them, do I need a perosnal DNS service? Scenario 2: my friend's PC has IP 5.6.7.8 and I would like that everyone accessing "myfriend.mydomain.com" could get as a DNS response my friend's IP 5.6.7.8 (not my 1.2.3.4) ... do I still require the DNS service? and for more exotic scenarios like dynamic IPs for subdomains based on geographic location? etc. – ArtM Dec 3 '11 at 21:28
faster Domain Resolution I believe most routers nowadays caches DNS queries, therefore running your own DNS server shouldn't be faster at all. – Lie Ryan Dec 3 '11 at 21:54
@ArtM: most registrar that provides DNS service typically also allow you to configure subdomains. It is only necessary to run your own DNS server if you want to dynamically change the assigned name based on your own business logic. Geographic-based dynamic IP might be a good one. – Lie Ryan Dec 3 '11 at 22:03
Double check that your registrar doesn't charge for subdomains. Most don't but some charge for more than a set number of subdomains. – Amazed Dec 3 '11 at 22:22
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