Subdomain is a domain which is a part of a larger domain. For example, 'sub.example.com' is subdomain of 'example.com' domain.

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57
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8answers
3k views

Should I include “www” in my canonical URLs? What are the pros and cons?

What are the pros and cons of having http://www.example.com/ vs http://example.com/? For example a problem I'm aware of is that if I use a domain without www I can't set a cookie for the current ...
45
votes
4answers
3k views

Are page ranks for subdomains independent?

If I have a domain name say stackexchange.com and I want to host 2 sites X and Y as subdomains of that site. Will x.stackexchange.com help out y.stackexchange.com in page rank? Or will google treat ...
31
votes
4answers
1k views

Subdomain versus subdirectory

I recently moved from having a main site like www.example.com with a subdomain associated site yyy.example.com, to moving everything off the subdomain to a subdirectory like www.example.com/yyy/, with ...
22
votes
4answers
2k views

Why insert static files (CSS, images, JavaScript, ECC) in a subdomain?

Why so many big and little sites inserts static files (CSS, images, JavaScript, ECC) in a subdomain like media.example.com or s2.static.example.com? What are the advantages? Why not just a directory ...
16
votes
2answers
5k views

Do subdomains help/hurt SEO?

If I have mysite.com, and blog.mysite.com, do search engines see those as 1 site or 2? Will using subdomains hurt SEO? I have some technical reasons why I can't use mysite.com/blog.
11
votes
6answers
2k views

Why should I use a subdomain structure over a directory structure?

I want to do blog.mysite.com but i know it will negatively impact my PR with Google. When is it preferable to structure your site like that vs mysite.com/blog? Is it only for the benefit of PR?
11
votes
2answers
187 views

Choosing which domain to secure

We've got a website that is served on both www.example.com and just example.com - we've never done any sort of forcing users from one domain to the other, so if they land on example.com then that's ...
10
votes
8answers
11k views

Is it possible to find all subdomains for a certain domain?

a client of mine is currently hosting a web-project on one of his servers with some sub domains for previews, testing etc. Those are really hard to guess sub domains like: ...
10
votes
3answers
2k views

Subdomains vs. subdirectory – status as of 2012.

This following question by Jeff was in 2010 and I wanted to check how things have changed in the past 2 years. My problem: I run a site with most of the content distributed to subdomains that’s are ...
10
votes
1answer
308 views

Is an externally-hosted subdomain a security risk?

A company I've been developing a web site for wants to keep their current domain, which is something like company.parentcompany.com. Because we wanted to use a different CMS, the parent company ...
8
votes
2answers
265 views

Can I use the same SSL cert for HTTPS and FTPS

I am looking to get an extended SSL certificate for a server that is handling one of my subdomains. Can I use the same certificate for https://sub.example.com and ftps://sub.example.com, assuming that ...
8
votes
3answers
497 views

Dev site indexed by Google

I was developing a new version of our site on a subdomain (dev.oursite.com) and the robots.txt with the Disallow got replaced at some point, so the site got indexed by Google and other search engines. ...
8
votes
2answers
533 views

Canonical'd pages on subdomain showing up in Google search results

You might have heard that we launched Facebook Stack Overflow yesterday. As part of this, we modified our code to put <meta rel="canonical" ... tags on every question and user on the ...
7
votes
2answers
3k views

Why does my site only work with a www in the URL?

I'm a bit confused as the following points: There is a simple text website, with no javascript, that works only with the prefix. http://www.mysite.corporation.com works but ...
6
votes
4answers
300 views

DNS sub-domain registration

Is it possible to register a sub-domain if you don't own the base domain? For example, could I register NickLarsen.random.com if I don't own random.com?
6
votes
2answers
293 views

Are co.uk domains and the likes subdomains?

I was wondering, are co.uk domains and others with an additional dot subdomains? If not, why not, and if so, can you create sub-sub domains?
6
votes
4answers
2k views

How can I tell Google Analytics to not use cookies for my sub domain?

I have my web site at example.com, and i have also setup a sub domain for serving static content at static.example.com. On my web pages I'm using Google Analytics, so it will attach its cookies to all ...
6
votes
2answers
641 views

Are subdomains (for mobile-specific pages or localization) bad for SEO?

You have a website: http://www.mysite.com You want to serve up mobile-optimized pages for mobile devices. I've seen a lot of companies redirect mobile devices to this type of subdomain: ...
6
votes
2answers
645 views

Moving from Subdirectory to Subdomain structure

I have a website (powered by Rails/Postgres and nginx) where I had setup a blog and a coupons section as: http://myrailsapp.com/blog/ http://myrailsapp.com/coupons/ Blog is powered by wordpress and ...
5
votes
5answers
468 views

URLs which begin “www2”

I was sent a link recently http://www2.biotech.wisc.edu/ I've occasionally noticed this appear in some web addresses, where does the "2" come from? Does it mean anything? How would I go about getting ...
5
votes
2answers
138 views

Implications of using subdomain or traditional folders SEO

Let's say I run a site where companies get their own page, and within that I also show staff members. I am torn between three different approachs in terms of URL's and want to choose one which is not ...
5
votes
2answers
2k views

How can I secure an installation of MediaWiki?

I want to run an installation of MediaWiki as a Internet-accessible personal wiki, running on wiki.mysite.com. However, I want to ensure that I am the only one who can read and write to this wiki. In ...
5
votes
1answer
191 views

Impact of dropping www from main URL on SEO

A client's website is currently at www.domain.com, with domain.com redirected there automatically. I've suggested that they reverse the redirection to drop the "www", so I can set up a subdomain that ...
5
votes
1answer
983 views

CNAME: does a cname change the url that the browser displays?

I have a web site www.somewhere.com and I want the alias fr.somewhere.com. I set up a CNAME record for www.somewhere.com alias fr.somewhere.com. When a user types in http://fr.somewhere.com in their ...
5
votes
3answers
1k views

Multiple Wordpress installs on subdomains affecting SEO?

I am working on a website for a photography business in town and was asked to do something I'd never considered before. The company wants a basic webpage for it's "general" business -- ...
5
votes
2answers
249 views

Subdomain versus new domain

I'm adding a blog to a site. Would it be better for SEO to put it at blog.example.com or at www.exampleblog.com? I already own www.exampleblog.com . Would combining the words together to exampleblog ...
5
votes
2answers
1k views

Redirect/rewrite dynamic URL to sub-domain and create DNS for subdomain

I have created an application in PHP, I would like to re-direct the following URL to corresponding sub-domain. Dynamic URL pattern: http://mydomain.com/mypage.php?user_name=testuser I wish to ...
5
votes
2answers
5k views

Starting from scratch xxx.yyy.com or www.xxxyyy.com (any SEO difference?)

I know there are lots of answers both here (e.g. this and this) and elsewhere which deal with subdomains and their impact on SEO. However, often the questioners are either asking about subdomain ...
4
votes
2answers
1k views

Why is “www.mysite.com” different from “mysite.com”?

In any browser if I use www.mysite.com or just mysite.com the web page is correctly retrieved, but I am having trouble with Google Analytics and Facebook App. Facebook: To be able to get Likes, I ...
4
votes
2answers
282 views

Should I choose sub-directories over sub-domains in this case?

I'm developing an application at the moment which shows local content based on location. Since the site is intended for local users, there won't be much need to change domain. For example: someone ...
4
votes
2answers
1k views

Pointing a subdomain to Github Pages

I set up an Octopress blog on Github Pages at myusername.github.com. I now want blog.myusername.me (which currently has a Wordpress blog set up) to point to this Octopress blog. So I followed the ...
4
votes
1answer
191 views

Using subdomains for niche SEO

Simple question: If I have a website offering website themes and I set up subdomains like builder.themes.com, artist.themes.com would that be more beneficial than having totally separate sites or ...
4
votes
2answers
699 views

Redirect subdomain (weblog) to new domain without access to .htaccess

I have a blog that has PR 1 on a subdomain aaaa.domain.com of a blog server domain.com. Now I want to buy a domain newdomain.com and I want to tell google webmaster to redirect the old subdomain to ...
4
votes
1answer
935 views

Not able to track traffic on subdomain using Google Analytics

I'm trying to track traffic for my sub-domain, but it's not happening. This is how it's set up. My partner has a domain called sub1.partner.com. This domain points to partner1.mydomain.com. The idea ...
4
votes
1answer
186 views

Do Dynamic Subdomains Harm SEO or not?

I am establishing a new website for just resumes, and I structured my htaccess as to provide dynamic subdomains as: marketing.resumedomain.org/index.html sales.resumedomain.org/index.html ...
4
votes
2answers
372 views

Case-specific mod rewrite on WordPress subdomain multisite

I have split a WordPress blog into multiple category-specific blogs using subdomains, as the topics in the original blog were too broad to be lumped together effectively. Posts were exported from the ...
4
votes
4answers
477 views

Will a redirected subdomain lose Google SEO links?

Because of a change in brand, I want to redirect our subdomain.domain.com to newdomain.com. The content being exactly the same, I was thinking of using a 301 wild card redirect to newdomain.com. I ...
4
votes
2answers
194 views

The SEO Impact of Migrating from Free Hosting on WordPress.com to Own Hosting

I have a blog (which serves as a commercial site) hosted on free wordpress.com. Since I now want to customise and get ownership of the whole thing I am thinking of either self hosting or upgrading ...
4
votes
2answers
3k views

How to redirect calls from http://svn.example.com to http://dev.example.com:8443?

How to redirect calls from http://svn.example.com to http://dev.example.com:8443? Should I be asking our Cisco networking guy to set this up (and if so, what do I tell him to do?), or should I be ...
4
votes
2answers
124 views

Subdomain or domain?

We have more than one content management system (eCommerce) running on our site and we want to know would it be wise to separate these systems and run on their own server for better performance, ...
4
votes
1answer
117 views

subdomain not working and added /mysubdomains/devsitename

I am having a site www.example.com which working fine and I have a number of sub-domains which are working fine except one. When I gave the url subdomain.example.com the address bar showing as below ...
4
votes
2answers
3k views

.htaccess directory to subdomain

I have been trying to make a subdomain from a directory (made by .htaccess) to be used as the main page starting like http://domain.com/sub/2/3/4.html and turning into ...
4
votes
5answers
278 views

Using subdomains or directories for main categories?

I have a website which references places to travel to in the world. Those places are (of course) grouped by countries. Here is an example of an actual URL of my website: ...
3
votes
4answers
2k views

Is it “acceptable” for a sub domain to be hyphenated?

I am putting together a site for a portal. Some of the subdomains have rather long names and I am thinking that maybe I should use hyphens to make the subdomain names more readable. For instance: ...
3
votes
3answers
172 views

Is it correct to have domains with more than 3 levels?

I've been arguing for some time about this topic, now I'd like the opinion of professionals. My point is that a domain should be made of 2 or 3 levels at most, like: mysite.com blog.mysite.com ...
3
votes
3answers
374 views

Should I use multiple subdomains for a website that supports multiple cities?

So the closest example I can give is craigslist, for example: Craigslist Winnipeg: http://winnipeg.craigslist.ca/ Craigslist Toronto: http://toronto.craigslist.ca/ Is copying this style going to ...
3
votes
2answers
1k views

Do subdomains need to be defined through domain registrar?

I have bought a new domain name from GoDaddy. Let's say it is abcd.com. On GoDaddy's DNS Managing page, I changed A(Host) part to @ = 74.125.232.215 which is www.google.co.uk's IP address. Now if ...
3
votes
1answer
236 views

How to make Subdomains identified as separate sites by Search Engines

I have a domain name and a live website. I want to create some subdomains so that they appear as separate websites in Search engines. For Example take Blogspot. x.blogspot.com and y.blogspot.com are ...
3
votes
2answers
703 views

Images on a subdomain, hosted on the same server — will simultaneous downloads increase? (CDN)

Browsers only allow you to download a limited number of concurrent files from the same domain. Would a subdomain for images (basically as a content delivery network) on the same web hosting server ...
3
votes
2answers
77 views

Do browsers recognize the same files served by different subdomains?

I have my website assets stored on Amazon S3 and served by CloudFront, from a separate domain name, to act as a cookie-less domain (so website.com for the website and websitestatic.com for static ...