Top "Dns" questions

DNS QUESTIONS MUST BE PROGRAMMING RELATED.

DNS problem, nslookup works, ping doesn't

I am setting up a development server in my flat. I have set up an Ubuntu DNS server on it …

windows dns
Set up DNS based URL forwarding in Amazon Route53

I'm trying to setup forwarding in Amazon Route53. My last DNS service (Nettica) allowed me to route requests to "aws.…

dns forwarding amazon-route53
How to simulate browsing from various locations?

I want to check a particular website from various locations. For example, I see a site example.com from the …

dns geolocation
what is the multicast doing on 224.0.0.251?

On my debian server (squeeze) I get this message every few seconds: Sep 18 21:28:14 myhost kernel: [7903784.720091] AIF:UNPRIV connect attempt: IN=…

dns debian mdns
Can I map a hostname *and* a port with /etc/hosts?

Can I map an IP address like 127.0.0.1 to a domain name and a port? For example, I would like to …

linux dns port hostname
Can (domain name) subdomains have an underscore "_" in it?

Can subdomains (domain names) have underscore _ in them?

dns subdomain standards
How can I do DNS lookups in Python, including referring to /etc/hosts?

dnspython will do my DNS lookups very nicely, but it entirely ignores the contents of /etc/hosts. Is there a …

python dns
Is it possible that one domain name has multiple corresponding IP addresses?

For example, when we connect to www.example.com, at first we try to connect to 192.0.2.1. And if first try …

dns
Can I perform a DNS lookup (hostname to IP address) using client-side Javascript?

I would like to use client-side Javascript to perform a DNS lookup (hostname to IP address) as seen from the …

javascript dns
How to force DNS refresh for a website?

I'm moving my web application to another server and in the next few days I'll refresh the DNS to point …

caching dns