Questions tagged [subdomain]
154 questions
99
votes
4 answers
What is the purpose of the WWW subdomain?
What's the point of having www.? Isn't it just useless extra text? Since everyone is used to it, www.google.com looks more well-balanced than google.com, but why did it start in the first place?
One thing I noticed, is that google.com has the IP of…
mk12
- 3,342
38
votes
4 answers
What is a hostname versus a computer name versus a subdomain versus www?
I was searching for understanding what is the “www” at the beginning of so many web addresses in the Internet. I read in somewhere that “www” is called “hostname”.
The world “hostname” made me go a step further in searching, I read so many threads…
siamak
- 501
- 1
- 5
- 8
29
votes
1 answer
How to create subdomains on a name-based virtualhost?
I have name-based hosting, lets call it my.address.com. My friend has the 'plain' address address.com and gave me a virtual machine that I can access via SSH.
He also made some magic with ports and now, after installing Apache, I could access…
scythargon
- 836
26
votes
1 answer
What is the maximum length of a domain name?
According to domain name specifications RFC 1035:
2.3.4. Size limits
names 255 octets or less
According to the SMTP RFC 5321:
4.5.3.1.2. Domain
The maximum total length of a domain name or number is 255 octets.
The RFCs are thus…
chmike
- 497
14
votes
2 answers
Why does Google Chrome automatically add www. prefix for some websites but it does not add it for others?
It adds it to my website but it does not add it to google.org for example. My website DNS records looks like the following:
Host Name | IP Address/Url | Record Type | TTL
@ | | A (Address) | 1800
www | @ …
Yo Nootz
- 330
13
votes
4 answers
How is a subdomain passed to the webserver?
I know that dns resolves an address like example.com to an IP address like 11.22.33.44, but I'm a little confused about how subdomains are resolved, so that when you type http://subdomain.example.com, what actually gets passed to the server at…
Joshua Frank
- 1,671
9
votes
2 answers
Firefox: save username/password for all sub domains?
Not sure if this is possible -- I have a username and password combo which is valid for all sub-domains of a given domain, that is: domain1.example.com, domain2.example.com, domain3.example.com, etc. Is there any way I can tell Firefox that the…
Josh
- 9,947
8
votes
2 answers
Getting a free SSL certificate for a subdomain
I have a sub domain from no-ip.org. I would like to get a free SSL certifcate for my domain. Is this even possible to do for a subdomain and if so what are my options?
Sab
- 141
8
votes
3 answers
Is the www in web addresses a subdomain?
Possible Duplicate:
Whats the purpose of the WWW subdomain?
I read about sub domains at w3schools, but Wikipedia says something different. The w3schools gave the example of www being a sub domain. Is the www before the website the subdomain or…
user46959
8
votes
3 answers
How to have multiple servers on one IP address
I am having trouble figuring out how to have multiple servers (that do different things) on one IP address. I would like the subdomains to point to different applications. Let me give an example of what I am trying to do. I choose a couple services…
monarch8
- 81
6
votes
1 answer
How to register subdomains on dnsmasq
how can I register subdomains of my web development server into my DNS automatically?
I mean, I wouldn't like to edit the DNS config file, but send something from the client that says 'Hey, I have a subdomain here'. Is it possible? Other way, how…
JorgeeFG
- 416
6
votes
1 answer
Configure Firefox so cookie management is more granular than just first domain below TLD
TL;DR folks: The actual question is bolded in the final paragraph; the rest of this is explanation so people don't assume I have an XY problem.
I'm responsible for maintaining the Firefox installation on my organization's intranet. Almost all of the…
ShadowRanger
- 175
6
votes
3 answers
Given a safe domain, are subdirectories safe as well?
Let's suppose that the URL www.imgur.com is a safe domain and it's associated with an online image sharing community.
Given that, a guy sent me a link to a subfolder of the previous "safe" domain, let's call it "www.imgur.com/a/subfoldername". For I…
franz1
- 435
5
votes
1 answer
How to use Cloudflare for a subdomain (of a domain I own)? Website hosted on Namecheap shared servers
I have a website on a Namecheap shared hosting server and I’d like to use Cloudflare (free tier) for it. The main content of the website is on a subdomain. Root domain has just a dummy landing page. I noticed that when I try to add the website /…
Dean Panayotov
- 145
5
votes
2 answers
Resolve wildcard.hostname in local network?
For web development on my local server (nginx) I like to create subdomain vhosts for some projects, mostly for convenience and flexibility. For example
server {
listen 80;
server_name project.myHostname;
root …
Arsylum
- 156