How many 3 letter domains?

I am wondering how many 3 letter/number domains would be out there altogether? Also how many 2 letter/number domains?

Is there anyone who got Maths degree? I would appreciate you could calculate it.

thank you

 

3 letter: 26*26*26 = 17576
3 number: 10*10*10 = 1000
2 letter: 26*26 = 676
2 number: 10*10 = 100

 

Rythm, that's incorrect..

You don't need a maths degree but you do have to remember stuff from high school. You're looking at permutations here.

for 3 letter domains there are 15600 possible combinations.
For 2 letters there are 650

 

oh, you wanted numbers AND letters.

for 3 letters/number combinations there are 39270
for 2 letters/number combinations there are 1190

 

That's not true, you can use a letter/number as often as you'd like. Why wouldn't it be possible to have the domain aaa.com?

Also, there are 10 different numbers and not 9 as you used in your calculation.

So that's 36^3 = 46656 combinations of 3 character domain names (hyphens excluded).
And 36^2 = 1296 different 2 character domain names.

 

Oh yeah... I forgot 0 was a number ^_^;

ok, so here it is again, with repetition enabled (of course a domain can be aaa.com.. silly me). in this case it's even easier. Just use n to power of r

3 characters = 46656
2 characters = 1296

 

And domains like a-a.com they are not calculated in your calculations are they

 

why would you want to know this?

 

OK people. I don't know why you still wondering about the combinations but these are the right ones :

2 characters ONLY letters = 676
2 characters TOGETHER with numbers = 1,296

3 characters ONLY letters = 17,576
3 characters TOGETHER with numbers = 46,656

Not calculating the dashes

 

allowed characters in a domain name

a-z 0-9 as well as a - provided it doesn't start or end the name the name

36^3=46656
36^2=1296
46656=1296= 47952 3 letter combinations including dashes
36^2=1296 2 letter combinations
267 available tld's so...

12,803,184 3 letter domains

as to the number of 2 letter domains. it will be less than 346032 as many tlds don't allow them to be registered some of those that do require one of the characters to be a number... so forth and so on... which would require more work to figure out than I want to put into it.

 

SpringCypress and all others.

Thank you for your nice calculations.

 

I thought he meant 2 and 3 letter domains already registered

 

Are you talking about all the combos including the ccLTD ones as well. If so, all the above posters are incorrect

 

Oh, we all forgot .
as in www.a.a.com

 

But that's just a one letter domain with a subdomain

/Andreas

 

That's not what he asked. This no 3 letters domain

 

Only for one TLD. It is then easy to multiply if you like to know about all ccTLD.

 

It is a permutation problem. (36, 3) X 10^n, where n is number of extension. 36 is 26 + 10.

 

???

Btw, the total number of 3 character domains inclusive of hypen is simply:

36*37*36 = 47952