Regular Expression for website URL - no HTTP(s)

Question

I'm trying to get a regular expression to work where the following URLs are accepted:

www.somesite.com
somesite.com
www.somesite.ca
somesite.ca
somesite.cu.sk.ca
www.somsite.cu.sk.ca
somesite.sk.ca
www.somesite.sk.ca

I have the following so far but it allows www.somesite

 ^(www\.)?[a-zA-Z0-9_\-]+\.([a-zA-Z]{2,4}|[a-zA-Z]{2}.[a-zA-Z]{2})(.[a-zA-z]{2})?$

Query strings, http, https, ftp are not in play here. Thanks!

karthik manchala · Accepted Answer · 2015-06-08 19:23:29Z

2

You forgot to escape . in the last pattern (.[a-zA-z]{2}) (the dot will match any character):

^(www\.)?[\w-]+\.([a-zA-Z]{2,4}|[a-zA-Z]{2}.[a-zA-Z]{2})(\.[a-zA-z]{2})?$
                                                         ↑

Also, I replaced your [a-zA-Z0-9_\-] with its equivalent [\w-]

answered Jun 8, 2015 at 19:23

karthik manchala

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1 Comment

Business requirements @Josh Stevens