Translates domain names to IP addresses. DNS stands for Domain Name System.

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can't reach domain controller when internet interface is enabled

What I want: -Windows Server 2008 R2 guest acting as Domain Controller, internet access optional -Windows 7 guest joined to the domain, with internet access. My setup is this: Server network adapter ...
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28 views

How can I connect to UNC path on an external server in Windows Explorer?

I am using Windows Explorer and would like to connect to a certain IP address. After that, I want to connect to a different IP address through the server. Ex: A -> B -> C A is my current computer. B ...
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1answer
42 views

Difference Nslookup vs. ping -a

We are trying to setup reverse look-up zones in our Windows environment. Prior to setting up the zones, nslookup would fail to resolve an IP to hostname. Oddly ping -a would resolve a hostname. ...
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87 views

What is wrong with my Dynamic DNS settings?

I host my own website on a home iMac. The website is accessible from its local and remote IP addresses, but recently, the hostname stopped working because the DNS stopped updating. I have been ...
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23 views

Wildcard DNS versus 1&1's Glue Record

I would like anysubdomain.mydomain.com to go to mydomain.com, but keep the host set as anysubdomain.mydomain.com. I recently talked to them (1&1), and not sure if they are steering me in the ...
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38 views

301 redirect DNS issues related to Nginx change

I think I screwed up something in my Nginx configuration. Here is how I can explain it: I own a domain lets call it abc.com Before all the issues happened DNS was configured in the following way at ...
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4answers
8k views

DNS lookup fails but nslookup works

I have DNS lookup problems on my internal network. I'm using an internal DNS server with the IP 192.168.1.254. If I use nslookup everything works like it should: >hawk:~ user$ nslookup ...
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2answers
166 views

DNS does not work after upgrading to OSX Yosemite

After upgrading to Yosemite I can no longer get online. I can pick an IP address on the web and get a response but DNS is not working. A ping command to google.com will fail, however an nslookup or ...
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70 views

How to simulate “global hosts file” on my LAN?

I would like to access machines on my LAN by names. Not with fully qualified names, but with names. Some of machines are Windows, another are Linux. All of them are obtaining IPs over DHCP, some of ...
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26 views

DHCP configuration for local DNS server

I have a server at home with several other computers/devices using DHCP to connect. The DHCP service is provided by the router. My ISP gives me a dynamic IP address so I use no-ip to get a fixed DNS ...
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1answer
800 views

Domain goes to localhost

I have a domain named ejn.nu. On some computers and networks, it sends the user to localhost when it should send the user to my server. When i do "ping", it shows the correct ip for my server and when ...
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21 views

DNS geolocation and host file

I was trying to understand DNS geolocation used to limit content country by country. As far as I understand, it is the DNS server which returns an IP address corresponding to the server that the ...
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2answers
1k views

In OS X, how can I prepend 127.0.0.1 to the list of DNS servers obtained through DHCP?

I am trying to use dnsmasq to resolve certain known domains using its configuration, but let the rest of the requests go through to the normal DNS server assigned by DHCP. I cannot get this to work. ...
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1answer
44 views

What could be disturbing DNS lookup on the local network?

Three windows computers setup to use hard coded 8.8.4.4 and 208.67.220.220 as DNS servers are not experiencing any problems. These servers were found using the DNS benchmark utilitiy found here. ...
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32 views

Why can't I connect to Google sites?

I'm on Windows 8.1 and I'm having a strange problem with my home network (I'm connected via ethernet to an Sitecom ADSL+ router). Since yesterday morning, it's very difficult to reach every Google ...
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2answers
4k views

DD-WRT DNSMasq DNS Caching, Forwarding, and Local Resolution

I just flashed DD-WRT to my Linksys e4200 and I'm exceptionally pleased with it. I would like to use DNSMasq to cache DNS resolutions, forward results it does not have in its cache to Google's public ...
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1answer
20 views

Updated DNS zone can't be seen from my local network

I have updated a domain name DNS zone on 123-reg.co.uk where I bought the domain name. I have only updated blog A record to different hosting(IP) On my PC home (windows) or another PC in the same ...
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78 views

Why can't I have IPv4 and IPv6 web access simultaneously?

I'm using a 6to4 tunnel from tunnelbroker.net to gain access to the Internet via IPv6. Even after getting the tunnel built and properly established, I wasn't able to get access to IPv6 web pages ...
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1answer
75 views

Different Traceroute Endings

Am trying to understand why Trace-route endings are different from on site to another. This below three outputs has been constant for long period of time. Using: ...
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1answer
28 views

Spoof DNS in a Rogue AP

I am using 2 interfaces on my computer, eth0 grants access to the outside world and wlan0 is where the Access Point is set up. My configuration is based on 2 networks 192.168.1.0 on eth0 and 10.0.0.0 ...
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1answer
42 views

Understanding IP Information Results

Am trying to understand why some IPs like this one shows results in different country. This below output is from using IP Information function provided by DNSStuff.com. This was a key IP in ...
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1answer
63 views

Windows DNS Change IPv4 vs IPv6

I want to change my DNS settings in Windows and I want to use the Google DNS Servers. In all tutorials (Microsoft or Google) I read change IPv4 OR IPv6.. What does it mean? If I change only IPv6 ...
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1answer
34 views

Can this DNS setup ever work?

First, an anecdote involving docker, which is incidental to this question: I followed the procedure in Skydock - Automagic Service Discovery for Docker, which went well. Now I have a DNS server ...
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1answer
40 views

Resolve Subdomains to Full Domains [duplicate]

I'm trying to work out how I could configure my machine (presumably my machine's DNS settings) to resolve subdomains to the appropriate full domain of my site, mostly for shorthand purposes in ...
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66 views

Emails from my domain treated as spam by Gmail and Outlook [duplicate]

I know that this question asked multiple times before but I have a little bit different situation. In Brief: I have reverse DNS, PTR records, SPF records, DKIM 1024-bit key, IP not blacklisted, ...
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67 views

DailMotion App wouldn't load Videos while DailyMotion Website works fine

I am facing a strange issue lately, When I am connected to my home Wi-Fi Network, I cannot be able to load DailyMotion videos through Android App, I have tried over dozen different phones including , ...
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2answers
45 views

How to lookup a public IP address and write only the IP address to a text file?

I have looked and found the following line of code which works fine but when run in a batch file nothing happens. for /f "skip=4 usebackq tokens=2" %a in (`nslookup microsoft.com 8.8.8.8`) do echo %a ...
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5answers
482 views

Nslookup command line with A record IP as sole output

I've found the following command to get your current public IP that works well from command line: nslookup myip.opendns.com resolver1.opendns.com I want to be able to run a command though that JUST ...
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3answers
128 views

I cannot access jsfiddle.net

I cannot access jsfiddle.net. My internet connection is PPPOE. I get a 502 error. Firefox says: [Fiddler] DNS Lookup for "jsfiddle.net" failed. This is usually a temporary error during hostname ...
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10 views

The path of a request goes to the server [duplicate]

I have presentation about internet servers and I am going to talk about request,respond,DNS, CDNs and etc... I want a simple image that can show what happen when a request send form a client and goes ...
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11answers
41k views

Why is 'ping' unable to resolve a name when 'nslookup' works fine?

On my Windows XP workstation, I can find the machine I want to connect to in DNS with nslookup: nslookup wolfman Server: dns.company.com Address: 192.168.1.38 Name: wolfman.company.com Address: ...
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17 views

dd-wrt internal dns resolves directly for a few hosts, with a “.” for a few hosts

I have a dd-wrt router, and a bunch of static leases. The machines themselves all acquire IP through DHCP. When I do a "nslookup host1" or "nslookup host2" the correct IP address is displayed. All ...
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*.org domain websites are not loading

The problem is that any page with *.org domain in not loading on my computer (Ubuntu 14.04). Any other domains like *.com, *.net are loading! This is very strange. I tried in different browsers, and ...
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1answer
75 views

Windows Xp DNS Resolution not working

Starting off, I am working on a client computer. I was removing a FBI MoneyPack Ransomware virus from a windows xp system. Well I got rid of that and then had a problem with the firewall. I did the ...
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21 views

how can i set up BIND to use a different DNS for a specific domain

at work we are using a VPN tunnel to communicate with an external network that is set up for testing. There is also a DNS running inside this external network, and I would like to have a local DNS ...
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1answer
19 views

Dig command: Is the output guaranteed to be sorted?

Let's say I'm trying to lookup the IPs mail.yahoo.com, gmail.com and mail.google.com If I execute: dig @8.8.8.8 +nocomments +noquestion \ +noauthority +noadditional +nostats +nocmd \ ...
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1answer
38 views

Why is NSLookup returning more than one record?

I am doing an NSlookup on my OSX machine and getting more than one record. 174.0.100.24.in-addr.arpa domain name pointer my-machine.domain1.domainname.com. 174.0.100.24.in-addr.arpa domain name ...
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53 views

CNAME and MX records on naked domain

I have a domain (registered with Daily.co.uk) that for quite a while was set up with a CNAME pointed to my friend's webserver which uses dynamic DNS to resolve to his IP, in addition to MX records ...
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1answer
14 views

Usage of PTR records aside from SMTP verification

Usually, when I create a zone file, I create PTR records so that an SMTP server can perform a reverse DNS query and verify that a hostname matches the actual IP in the A record. Since SMTP ...
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31 views

Random DNS resolution failures

I have a minecraft server setup. I have set my NS records to point to cloudflare's DNS, and I've created an SRV record which points to a CNAME record setup on another one of my domains. This cname in ...
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1answer
140 views

Postfix Reverse DNS Lookup: 450 4.7.1 Client host rejected

Postfix seems to be consistently rejecting mails from few servers though PTR lookup for those domains is successful. Please see log below. I have run out of ideas on what we can do to get this ...
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40 views

Able to receive, but not send email over SMTP from VPS. I don't think I'm being blacklisted

The error I get is "421 Downstream server error" or something similar. Up until a few days ago I could send mail without any trouble. I've searched around, and most other people with this problem end ...
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1answer
36 views

Why some hostNames are not resolved by my browser once dns-reversed?

I have some newby questions about dns. Here are the steps that lead me to those : C:\Windows\system32>nslookup google.ca Serveur : p81-004.pixelweb.net Address: 206.41.81.4 Réponse ne ...
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1answer
3k views

How to setup intranet DNS to resolve some sub domain address and forwards others?

I have a domain names (MyDomain.com) which has a number of subdomains (subs1, subs2, subs3 and subs4) On my local network I have 2 servers running that host subs1 and subs2. I also have a server ...
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1answer
200 views

DNS server not responding in vpn connection win 8.1

I use win 8.1 and my campus has an intranet network and a vpn(PPTP). to connect to internet, first I have to connect to the intranet(wireless network) and then connect to vpn. But the problem is when ...
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2answers
73 views

Can DNS service affect video streaming speed?

I am using a DNS service ( like unlocator.com) in order for me to watch Netflix.com because I am located outside US. Recently, I found that Netflix ( and also Amazon Prime) videos are very slow and ...
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2answers
1k views

Change DNS On Pace V2500 Router

I'm trying to change the DNS settings on my Pace V2500 router. There are no settings options within the admin interface so I will have to use telnet to make the changes. I cannot change the DNS per ...
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15 views

DNS Servers Between Two OS

Trying to sync DNS Servers between a Linux server and a Windwos server. Anyone have an idea how to sync an UBUNTU DNS Server with a Windows 2012 R2 DNS Server?
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58 views

I can enter my website using internal/public IP, but can't enter using my domain name

Couple days ago I bought another PC just for server purpose. I have already installed Ubuntu 14.04 LTS, LAMP, Mail Server SSH Server (or Service?), also PHPMyAdmin, Webmin and TeamSpeak 3 server. ...
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1answer
118 views

Change scutil HostName to ComputerName on osx

I have about 100 users with Mac Books on which I have admin access. I have set up a dnsmasq DNS-Server on a Linux box that has the Domain "schoolnet". Now I have the problem, that all Mac Books have a ...