I need a JavaScript regular expression that matches a domain which contains 2 or more characters

I need a simple JavaScript regular expression to match URLs in a string. This is what I have at the moment:

/(https?://)?[a-zA-Z0-9][a-zA-Z0-9-]+[a-zA-Z0-9].[^s]{2,}/gi

This works 99% of the time for any URL that contains 3 or more characters, for example all of these work:

• abc.com

• abcd.com

but I can’t get it to work for a URL with 2 characters:

• ab.com

• ow.ly

I’m using the match method like this:

let regex = /(https?://)?[a-zA-Z0-9][a-zA-Z0-9-]+[a-zA-Z0-9].[^s]{2,}/gi

let matches = "http://ab.com".match(regex)