dns

How to set dynamic subdomain cross server or in DNS setting

I have www.did5.com point to google appengine server I want to have anyname.did5.com point to www.did5.com/anyname And the url in address bar still anyname.did5.com I can't find the way to do by using dns setting (host records) Can anyone do ? Please help.. ...

Why does rDNS reversed store IP address?

For example, an address record for mail.example.com pointing to the IP address 192.0.2.5 is stored as 5.2.0.192.in-addr.arpa. Why do we reverse the IP address? ...

Wrong DNS for just one site on development machine

www.superyoink.de is my clients' website. I can access it from any machine except my development one. If I ping it on my development machine, I get 80.67.28.107 - this is wrong. My laptop, next to me, is able to resolve it correctly. I have tried putting correct address into hosts like so: 93.187.232.191 www.superyoink.de Still r...

Combining DNS wildcards and search domain

I have a setup where one webserver (bar.com) is serving lots of subdomains, so it would be convenient to use a wildcard DNS entry. At the same time I'd like to use bar.com as search domain, so that foo resolves to foo.bar.com. The problem now is that if I set it up like this, foo.com resolves to the webservers IP if there is no foo.com...

How can I determine which company an IP address belongs to ?

I'm trying to programmaticaly determine the company* associated with a given IP address. My first guess was this : string hostname = Dns.GetHostEntry(IPAddress.Parse(ip)).HostName; but this won't work if the reverse DNS isn't set correctly, which seems to happen 90% of the time. However some websites are still able to successfully...

ZoneEdit api Rest example

Does anyone have an example of using the ZoneEdit API? I have looked at the docs and there is not a clear example there. Preferably I would like to interface with ZoneEdit via REST. Darren ...

Skipping DNS and using IP adress in web dev as opposed to URLs.

How much time would be saved in skipping the request for the IP of a domain name? Would it be noticeable. Before anyone gets to excited i know there could be problems with using an IP as opposed to a URL in web dev like if you have multiple servers, but im just curious. ...

Get IPv4 addresses from Dns.GetHostEntry()

I've got some code here that works great on IPv4 machines, but on our build server (an IPv6) it fails. In a nutshell: IPHostEntry ipHostEntry = Dns.GetHostEntry(string.Empty); The documentation for GetHostEntry says that passing in string.Empty will get you the IPv4 address of the localhost. This is what I want. The problem is that...

getting NS record type using C# (dns)

Hi, Just wondering if there is any way to get the NS records in C#. I have read on the MSDN and there seems to be a DNS class that can return the host IP address. However, I am after the NS record type. Many thanks ...

Do connection string DNS lookups get cached?

Suppose the following: I have a database set up on database.mywebsite.com, which resolves to IP 111.111.1.1, running from a local DNS server on our network. I have countless ASP, ASP.NET and WinForms applications that use a connection string utilising database.mywebsite.com as the server name, all running from the internal network. Th...

How can I find all the domain names that resolve to one ip address?

Lately I've been tracking a spammer on craigslist. I recently discovered that he's added a new technique to his arsenal, he registered a whole bunch of domain names but they all resolve to the same ip address. Is there any way to take an ip address and get a list of all the domain names that resolve to that ip? ...

Using a SRV DNS entry to connect to SQL Server in .NET

Hi guys, We have a cluster SQL Server and we use a SRV DNS entry to locate the service (i.e sql.mycompany.com). MyCompany.com_tcp_http Service Location (SRV) [0][0][1433]sql.Mycompany.com Now, how I can use the .NET SQLConnection to use this dns name (instead of the server name/IP)? Any ideas? or should I use System.Net.Dns to transla...

hosts file and multiple sub-domains

For local testing (and learning), I wish to use x.com host name instead of localhost. I changed my Windows XP host file to this - 127.0.0.1 x.com Now http://x.com/ works beautifully but http://www.x.com doesn't. :( What changes should I make so that www.x.com, sub1.x.com, sub2.x.com etc.. all work on local. WordpressMU will let...

Correct SPF record using google apps

Can anyone help me out? I am using google apps, and google is handling my email. check out www.google.com/apps/ Well i have created the SPF record mention in the help forum in google, but the SPF record did not pass, verified by using [email protected] and [email protected] After searching a bit i found that the SPF me...

Getting domain names registered since TIMESTAMP

Is there a single, or small group of, root servers I can send a query along the lines of, return domain names created after TIMESTAMP If so, how would I ask for it ? I came across something called "zone-transfer" but it looks unreliable and likely to have me running into permission problems. // Edit -- I want to get the list of .COM ...

How to check if a server support xmpp protocol?

Hi, I'm looking for a way to check if a server is support xmpp protocol, i.e. xmpp-server is running on this domain. Maybe special DNS check or something like that? ...

Pulling MX record from DNS server

I am writing an application that is requiring me to do a DNS lookup for an MX record. I'm not sure if anyone has had experience doing this kind of work but if you do, any help would be appreciated. EDIT: The thing that I'm going for is an application that will send an e-mail alert. The problem is I need to have the application be able...

HTTP status code and DNS round robin

Suppose I have two servers and I have set up DNS round robin as following: www IN A 192.168.0.2 www IN A 192.168.0.3 From this FAQ, it states that "all of the latest browsers (IE, Firefox, Safari, and Chrome) support a client retry (sometimes called browser retry). So when it times out because a server is down, it will retry...

Does Silverlight restrict .root TLDs?

I've been working on a Silverlight app that loads XML. Internally, in our QA environment, the URL for an XML response is servername.stage.root/script/var1=1/var2=abc/etc i kept getting unexplained Security Errors when it was time to load an XML from this URL. I tried a variety of tests and finally determined that the error only occurs w...

efficient way to check parked domains?

I am writing a script that checks if given domain is parked or not. so far, I have this solution: add couple of characters at the end of the url. if url redirects to another page and returns 302 http status code then it is parked domain. returns other than 302 then it is normal domain. but some norma...