$number =~ /^\s*(\(\d{3}[)\-]\s*)?\d{3}\-?\d{4}(\s*ext[\.\:]?\s*\d+)?\
+s*$/i

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I haven't tested it, but it should allow:

In reply to Re: Tweak for my Perl Regex that screens for digits only by stony
in thread Tweak for my Perl Regex that screens for digits only by hackermike

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