The World's Longest Domain Name

by Harold Davis claims to be the world's longest domain name. But is it? It turns out that this is a matter of definition. According to the domain registrars, the longest legal domain name is 63 characters starting with a letter or number.

If you included subdomains (which precede the primary domain name and are followed by a period) you can get longer, probably up to some limit supported by individual browser software.

If you include domain suffixes in your character count you also can get longer (+4 for .com and +6 for, for example).

I don't think either subdomains or suffixes should be included in the search fro the world's largest domain name, meaning the best you can do is tie for first with 63 characters.

As Esther Dyson notes, nobody will type in these long names - they are opened by clicking links or selecting from a list.

Some other fun long domain names: the 3 is a subdomain, I like the photo of Dr. Evil a free email service named after a Welsh Village, claims to be the world's longest domain name (of course, by my definition, it is at best tied) and in Guinness records as the world'd longest domain name (turns out the title is for world's longest domainnamed after a real place)

Here are more longest domain names according to the Internet Book of Records (a strange name for a web site). Thanks to comments on Google Blogoscoped for getting me started on this trivia.

Any fun or interesting long domain names?


2005-06-12 15:56:33
In actual use by a business
A long one I saw actually advertised in a magazine was:

I am not sure what they were thinking.

2005-06-13 08:42:36
I have been informally keeping track of many hostnames of unusual size for a while:


2005-06-20 23:58:58
Another Longest Domain Name
I came across another longest domain name

2005-07-20 07:56:39
This IS the longest name. Definitive !
The longest valid domain name registered is in fact : is the longest .com name.

This is a valid place name (it's the upper part of the village of Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch in Anglesey; uchaf means "upper" in Welsh). I used to live near there.

It's the maximum number of characters for the name (63) and has the maximum number of characters in the suffix ( Total length 70 characters.

I don't think there can be any more contenders in the "valid" arena - all the others are made up or are german compound nouns.

2005-08-15 14:17:02
The World's Longest Domain Name
The most # of characters for a domain/sub domain or URL that will be suppoerted is 263 including all extensions and the "Http" etc. We created one here:

the 264th character gets trunicated.

2006-05-25 11:09:12
Longest Domain by Mark Twain

The Person with a New Idea
is a Crank — Until the Idea Succeeds
—by Mark Twain .com

Official Longest Domain
2006-10-10 08:35:35
Here is the official longest domain in the history of the internet
2007-02-20 07:33:37
Longest Domain - new
2007-02-24 16:36:07
The actual longest domain name in the world - which is a valid name, is :
(or if you count the suffix).

Easy to find :

2007-05-19 13:56:02
This one is also long ;)
2007-07-03 17:22:20
The longest domain name would be There's a "mile" between the s's!

2007-08-05 19:10:32
Or maybe
2007-09-24 15:02:58
here's another one:

Down With Firefox!!!
2007-10-23 06:50:38
here's the newest longest-domain-in-the-world:

it also has the most dashes / hyphens in it (31).

The only other domain which does THAT is

2007-11-30 19:51:47
Might not be the longest domain, but imho it's one of the funniest long ones:


2007-12-04 19:51:25
I thought was the longest, so i set out to do a search and a friend suggested that i type in longest domain name and out pops this blog LOL!!! Good Job!

But "Love is always the answer" ... even if it's not the longest ;)

~ Rod

2007-12-12 12:36:08
At least my domain makes sense and it supports business.
2007-12-18 12:29:26
2007-12-20 17:56:44
This is actually longer than any others below. Check it.

2008-01-21 07:08:23
Yes, i interested with longest domain name..
i just registered one...
(takien is the first person from Indonesia that have the longest domain) :)
The first from Indonesia
2008-02-11 11:40:08
2008-03-14 10:26:27
Here is this one i found interesting
2008-03-14 17:42:06
Nice post. I created a post like this one last year but yours is more in depth. There is one that you missed that's pretty interesting.

A few 63-character domain names you've never heard of

2008-03-14 18:16:59
255 chars is the longest you can have. This would be done through subdomains.
eric y
2008-03-14 18:24:45
and we thought was long? wait til we see jay whitlow next time!
eric y
2008-03-14 18:42:45
this is long...and has really cool content:

2008-03-14 19:50:57
May be but confused which is the one as most of them are not existing.
William Huynh
2008-03-14 19:52:30
2008-03-14 21:30:00
2008-03-15 08:18:58
Ha! Great post. There's also the meta long domain name:

2008-03-15 08:21:45
I found two other long domains, one of this claiming to be the "last domain of EU":

and this, the last-a-Domain of the EU:

2008-03-15 11:19:31
Just came across this one on StumbleUpon:

2008-03-15 15:34:47 -> ("www.:-).com")
2008-03-16 18:11:12
I find this one comical:


2008-03-16 21:04:29
I dont know whether visitors may type such a long domain name in their browsers. the extension is not included in the char count. However some people may register such domain names just for fun. But as a professional domain seller each and every domain is a valuable real estate Ie e-property. So enourmous care is to be taken

Best Regards

2008-04-25 18:18:46
I know the another domain name wish larger than given one.
2008-07-28 11:28:00
Thank you for this informative article. I always thought domain names could be up to 20 characters. Where have I been?