Translating web and email addresses

When dealing with website and email adresses does Japan use Katakana or western roman characters?

Say:

myname.com
or myname@icloud.com

how would that translate in Japan?

An e-mail address is an e-mail address. It appears as it does everywhere - in alphanumeric.

BTW, if you want to use Japanese domain, see also: Punycode
http://en.wikipedia.org/wiki/Punycode
You can use 日本.com or おもてなし.jp.

Thanks both.

As long as standard website and email addresses are understood with no problem in Japan then that's good.

So say on a business card which would have:

my name
website address
email address
phone number

Do any of these need to be translated to Japanese to be understood by a non english speaker?

The only thing that would be useful to have in Japanese would be your name in katakana.

Everything else can be alphanumeric.

eg:

ベニト　ムソリーニー
http://www.mussolini.com
benito@mussolini.com
1-800-999-999

Cool. I worked out my name in katakana.