Change DNS Settings in Windows XP

Domain Names and IP Addresses

How to Find My DNS Settings
The registrants users of a domain name are customers of the registrar, in some cases through additional subcontracting of resellers. Archived from the original on 22 December The header section contains the following fields: If the lock icon in the lower left-hand corner of the window is locked, click the icon to make changes, and when prompted to authenticate, enter your password. If it resolves correctly, bookmark the page, and try accessing the page from the bookmark. Join , subscribers and get a daily digest of news, geek trivia, and our feature articles.

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DNS Settings

An authoritative server indicates its status of supplying definitive answers, deemed authoritative , by setting a protocol flag, called the " Authoritative Answer " AA bit in its responses. Domain name resolvers determine the domain name servers responsible for the domain name in question by a sequence of queries starting with the right-most top-level domain label. For proper operation of its domain name resolver, a network host is configured with an initial cache hints of the known addresses of the root name servers.

The hints are updated periodically by an administrator by retrieving a dataset from a reliable source. Assuming the resolver has no cached records to accelerate the process, the resolution process starts with a query to one of the root servers. In typical operation, the root servers do not answer directly, but respond with a referral to more authoritative servers, e.

The resolver now queries the servers referred to, and iteratively repeats this process until it receives an authoritative answer. The diagram illustrates this process for the host that is named by the fully qualified domain name "www. This mechanism would place a large traffic burden on the root servers, if every resolution on the Internet required starting at the root.

In practice caching is used in DNS servers to off-load the root servers, and as a result, root name servers actually are involved in only a relatively small fraction of all requests. In theory, authoritative name servers are sufficient for the operation of the Internet.

However, with only authoritative name servers operating, every DNS query must start with recursive queries at the root zone of the Domain Name System and each user system would have to implement resolver software capable of recursive operation. To improve efficiency, reduce DNS traffic across the Internet, and increase performance in end-user applications, the Domain Name System supports DNS cache servers which store DNS query results for a period of time determined in the configuration time-to-live of the domain name record in question.

Typically, such caching DNS servers also implement the recursive algorithm necessary to resolve a given name starting with the DNS root through to the authoritative name servers of the queried domain. With this function implemented in the name server, user applications gain efficiency in design and operation.

The combination of DNS caching and recursive functions in a name server is not mandatory; the functions can be implemented independently in servers for special purposes. Internet service providers typically provide recursive and caching name servers for their customers. In addition, many home networking routers implement DNS caches and recursors to improve efficiency in the local network. A resolver is responsible for initiating and sequencing the queries that ultimately lead to a full resolution translation of the resource sought, e.

DNS resolvers are classified by a variety of query methods, such as recursive , non-recursive , and iterative. A resolution process may use a combination of these methods. In a non-recursive query , a DNS resolver queries a DNS server that provides a record either for which the server is authoritative, or it provides a partial result without querying other servers. For example, a simple stub resolver running on a home router typically makes a recursive query to the DNS server run by the user's ISP.

A recursive query is one for which the DNS server answers the query completely by querying other name servers as needed. In typical operation, a client issues a recursive query to a caching recursive DNS server, which subsequently issues non-recursive queries to determine the answer and send a single answer back to the client.

The resolver, or another DNS server acting recursively on behalf of the resolver, negotiates use of recursive service using bits in the query headers. DNS servers are not required to support recursive queries. Each server refers the client to the next server in the chain, until the current server can fully resolve the request.

For example, a possible resolution of www. Name servers in delegations are identified by name, rather than by IP address. This means that a resolving name server must issue another DNS request to find out the IP address of the server to which it has been referred.

If the name given in the delegation is a subdomain of the domain for which the delegation is being provided, there is a circular dependency. In this case, the name server providing the delegation must also provide one or more IP addresses for the authoritative name server mentioned in the delegation. This information is called glue. The delegating name server provides this glue in the form of records in the additional section of the DNS response, and provides the delegation in the authority section of the response.

A glue record is a combination of the name server and IP address. For example, if the authoritative name server for example. As ns1 is contained in example. To break the dependency, the name server for the top level domain org includes glue along with the delegation for example. The glue records are address records that provide IP addresses for ns1.

The resolver uses one or more of these IP addresses to query one of the domain's authoritative servers, which allows it to complete the DNS query. A standard practice in implementing name resolution in applications is to reduce the load on the Domain Name System servers by caching results locally, or in intermediate resolver hosts. Results obtained from a DNS request are always associated with the time to live TTL , an expiration time after which the results must be discarded or refreshed.

The period of validity may vary from a few seconds to days or even weeks. As a result of this distributed caching architecture, changes to DNS records do not propagate throughout the network immediately, but require all caches to expire and to be refreshed after the TTL. Some resolvers may override TTL values, as the protocol supports caching for up to sixty-eight years or no caching at all.

Negative caching , i. Multiple domain names may be associated with an IP address. The DNS stores IP addresses in the form of domain names as specially formatted names in pointer PTR records within the infrastructure top-level domain arpa. For IPv4, the domain is in-addr. For IPv6, the reverse lookup domain is ip6. The IP address is represented as a name in reverse-ordered octet representation for IPv4, and reverse-ordered nibble representation for IPv6.

When performing a reverse lookup, the DNS client converts the address into these formats before querying the name for a PTR record following the delegation chain as for any DNS query. For example, assuming the IPv4 address ARIN's servers delegate Users generally do not communicate directly with a DNS resolver.

Instead DNS resolution takes place transparently in applications such as web browsers , e-mail clients , and other Internet applications. When an application makes a request that requires a domain name lookup, such programs send a resolution request to the DNS resolver in the local operating system, which in turn handles the communications required.

The DNS resolver will almost invariably have a cache see above containing recent lookups. If the cache can provide the answer to the request, the resolver will return the value in the cache to the program that made the request.

If the cache does not contain the answer, the resolver will send the request to one or more designated DNS servers. In the case of most home users, the Internet service provider to which the machine connects will usually supply this DNS server: In any event, the name server thus queried will follow the process outlined above , until it either successfully finds a result or does not.

It then returns its results to the DNS resolver; assuming it has found a result, the resolver duly caches that result for future use, and hands the result back to the software which initiated the request. Some large ISPs have configured their DNS servers to violate rules, such as by disobeying TTLs, or by indicating that a domain name does not exist just because one of its name servers does not respond. Some applications, such as web browsers, maintain an internal DNS cache to avoid repeated lookups via the network.

This practice can add extra difficulty when debugging DNS issues, as it obscures the history of such data. These caches typically use very short caching times — in the order of one minute.

Internet Explorer represents a notable exception: Google Chrome triggers a specific error message for DNS issues. Hostnames and IP addresses are not required to match in a one-to-one relationship. Multiple hostnames may correspond to a single IP address, which is useful in virtual hosting , in which many web sites are served from a single host.

Alternatively, a single hostname may resolve to many IP addresses to facilitate fault tolerance and load distribution to multiple server instances across an enterprise or the global Internet.

DNS serves other purposes in addition to translating names to IP addresses. For instance, mail transfer agents use DNS to find the best mail server to deliver e-mail: An MX record provides a mapping between a domain and a mail exchanger; this can provide an additional layer of fault tolerance and load distribution.

I proceeded to do the internet setup only this time I selected to connect using a wire. It ran through the process and when I was finished, I went back to the settings and checked the connection status which listed all the correct numbers. Now I was able to move my PS3 back into my room and enter the correct information to establish a wireless connection. Some of you may also have a firewall set up in your Network Connections which is preventing your PS3 from connecting to the host.

If i can get some advice on how I can go about obtaining it that would be muchly appreciated. Could someone actully tell me me who do connect a PS3 to the network. A step by step idiot proof guide would be good. Hi, i am trying to connect to xbox live but my dns keeps failing how do i find it but when i put my ethnet cable in the router it works on the ip but the dns keeps failing.

Most ppl here seem to be missing the point with there console eg rtfm as in port forwarding etc. When you use a router learn about the settings by default a router acts like a firewall and is one unless you make an exception eg xbox psp ps3 theres traffic in and theres out.

So xbox live etc all use certain ports which need to be put in your router settings hence failing the tests when trying to connect. Also open browser log into your router and you should find your dns server ip address etc as the xbox is not connecting to your pc so why look for your pc ip dns etc your console is connecting through the router almost a mini pc in its own right. I am trying to hook up my xbox to live, because i just got a new comcast modem yesterday. I found the Ip adress, Subnet ,and Default gateway.

All I need is the DNS… thats the problem. There are 3 DNS sever numbers, and none of them work. They all are on Virtual PC. Now I have 5 computers, i am doing network and it work ok, i call on cmd ,, ping ip-s, evrything work.

I must to do this, make this for example…. What should I do? Only clue was that a DNS problem occured and error was displayed on attempt in chrome…. I was really worried but this helped me really…. Both wworking really nice now… thanks. Ok I have tried every thing i know both of my dns number but when i put them in my ps3 they dont work.

I am trying to work at home. I need to know if I have a high speed internet servise. If not, I need to switch to a high speed internet provider. I am also trying to watch a vidio clip sent to me by my employer but dont know how to make it play and dont know how to turn on speakers.

I was having the same problem as a lot of you. I was getting those dns errors while trying to connect to Xbox live.

Apparently the MAC address is where the hang up is. It was for me anyway. If you run the ipconfig the MAC address is next to where it says physical address.

I think it has to do with the fact that I was connecting directly to the modem. Not sure if it would have been a problem if I was using a router. Use iptables to forward port to internal system. See this FAQ for more info. I have tried getting online with my ps3 a while and i still cant figure it out i have tried evryhing from this site to other sites I obtain the IP address but the internet connection fails.

I can get online wiht my nieghors linsky but has bad signal It was working for a little than stoped. Yowww i iz tryin 2 set ma internet up for ma ps3 yhh buh it wnt let me cuz it sayin dah dere is a dns error n i dnt no wah ma numba is cud u tell me how to get it. Use this to solve the DNS not resolved error: Unplug your modem 7. Turn on your Xbox without a disc in the drive 8. Enter the DNS settings you copied down then apply the changes Input that letter and number sequence Connect your Xbox to your modem.

Do you know how to fix this problem. Please email me back. Im trying to get internet access on my playsation 3 and everything is going well until it checks the DNS Server Address. This is what it says: An error occured during communictaion with the server. This is a DNS error Got my Dns server address and manually entered in the configuration menu as instructed but I still get the same message. I was givin a router from a friend. I went to the router site to install a WEP to secure my internet, but then it asks me for a Network Key when I try to sign onto the internet.

Where do I get my Network Key from? Some one please help me as my neighbors are stealling my internet from me….. Kyriel my ip is also the same as the default gateway but that doesnt matter. My router worked for my ps3 and ds ladt year but now they dont so the only thing you can do is call your internet service provider and if all else fails get a new linksys routers those are good for linking different systems. Hi well the basics are a good place to start lol.. Hey there I am having the same problem as everyone who has been writing in.

I had a tech from my isp provider come out and help but still no joy. The same message port may be blocked which is rubbish. Even though now I have been changing settings both in the xbox and router I am still unable to connect to xbox live.

I think the server is down but microsoft are not telling us. The main issue is most people need to make sure they are connected directly to the router that converts their cable signal or phone sig to the internet.

Most people are not directly connected to their router. The MAC address comes in handy sometimes with multiple routers. Sometimes the default is set and you want to make sure the information is being routed to the routers MAC and not the default.

Hope this helps … mostly reiterating allot of what has been said. I am trying to hook up PS3. But the very thing is thati have been trying to connect my psp to the internet for some ti2me now and whave been having problem pls i need info on how to go about this. Im trying to connect my Nintendo DS to internet and it needs a primary and secondary DNS number and my pc doesnt have one. Ive tried steps on the net on where to find it and theres no number.

I need it as quick as possible. Im using Windows 7 64bit. Just fill in the Primary and you should be good. If you need a second one use a Public DNS such as 4. Hi, here is my problem. I got new internet connection provided by WISP.

The agent fist filled the ip as Did you know you could be connected to facebook. DNS servers translate web addresses like www. It works transparently in the background, converting human-readable website names into computer-readable numerical IP addresses.

Domain names are the human-readable website addresses we use every day. If you want to visit Google, you just need to enter google. Behind the scenes, the Internet and other networks use numerical IP addresses.

One of the IP addresses used by Google. IP addresses are also known to change, but the DNS servers keep up with that new information.

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The domain name system (DNS) is an Internet service that maps and identifies Internet domains into corresponding Internet Protocol (IP) addresses. The network connection of your computer is configured using IP and DNS settings. The Domain Name System (DNS) is a hierarchical decentralized naming system for computers, services, or other resources connected to the Internet or a private network. It associates various information with domain names assigned to each of the participating entities. Most prominently, it translates more readily memorized domain names to the . To change the DNS servers on a router, look for text fields labeled as DNS, usually in a DNS Address section, most likely in a Setup or Basic Settings area in the router's web-based management interface, and enter the new addresses.