Is it intentional that the last one's only got three parts to it? Anyhow, here's one regex that'll work:

/^(?:[\dx]{1,3}\.){0,3}[\dx]{1,3}$/

[download]

This will match between 1 and 4 blocks, each consisting of 1 to 3 digits or x's, separated by periods.

Are you dealing with IP addresses there? If so, you may also be interested in Net::IP::Match, Net::IP::Match::* and Net::IP::CMatch.

EDIT: the OP both edited his post and changed the examples of strings he'd like to match after I posted the above. For reference, this was the original post, in its entirety:

I am trying to have a Regex for a dotted number format as shown below

  • 8.1xx.x.x
  • 9.0.3xx.x
  • 9.0.4xx.x
  • . . .
  • 9.1xx.x

So any thoughts how I can make a generic regex for matching all these patterns.

In reply to Re: Regex for matching dotted numbers by AppleFritter
in thread Regex for matching dotted numbers by techman2006

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