Re: get domain component from email

Daniel Brown wrote:

On 8/7/07, Richard Lynch <ceo@l-i-e.com> wrote:

On Tue, August 7, 2007 1:25 pm, Kevin Waterson wrote:

Im looking for a way to get the domain from an email address. Not sub domains, just the domain, so luser@foo.bar.example.com.mn would return example.com.mn similarly, the address luser@example.com would return example.com perhaps an array of tld's, then strip the tld off the end and anything before that and the next "." is the domain? also, somebody told me .co.uk was a tld, but I cannot see it listed http://www.iana.org/root-whois/index.html

I think you're in trouble... The "rules" for what is or isn't a TLD have changed over time. I did see a nice article the other day in the RFCs about some pragmatic ways to do this "right" without killing yourself, or coding something that's bound to break within a very short time. Don't know the RFC# offhand though, but I got the feeling that it was pretty recent... The LAST thing you want to do is hard-code the list of known TLDs from today, because that will change too often. .co.uk is a TLD, afaik...

    My understanding was that .co.uk and like domains were still SLDs,

but where a TLD wasn't available for registration under the ccTLD format for the respective country.

This is just terminology, but to make it clear... .co.uk is a ccTLD not an SLD and .uk is *not* a TLD. The IANA website has lots of info on this stuff. -Stut -- http://stut.net/