Fast and simple solution:

$text = q(UFOFH 33603 01231 /0000 0024/ 1024/ 2025/ 3027/ 4030/ 5025/ 
+6028/ 7060/ 8081/ 9098/ 0110/ 1107/ 2106/ 3102/ 4080/ 5065/ 6057/) ;

$text =~ s/^UFOFH // and print split /\s+/,$text ;
[download]

If the line you have in $text begins with "UFOFH ", it wipes it away and splits on spaces.

Cheers!
--bronto

Update: pure regexp solution:

$text = q(UFOFH 33603 01231 /0000 0024/ 1024/ 2025/ 3027/ 4030/ 5025/ 
+6028/ 7060/ 8081/ 9098/ 0110/ 1107/ 2106/ 3102/ 4080/ 5065/ 6057/) ;

$text =~ m|^UFOFH | and print "GOOOOHH!\n"
  if $text =~ m|([\d/]{5}\s?){4,27}|ig ;
[download]

Update II:typo: you don't need the i when you are not matching alphabetics

Using the conditional if beginning of string matches... then match... should improve greatly the speed of the matching, compared to your solution. In fact, you are matching your pattern anywhere in the string, and that's expensive. The tecnique I used matches a short string at a specified position (the beginning of the line), and that's really fast! And if it doesn't match you don't waste your time trying to match your pattern against a string you are not interested in.

Anybody guessed I am in a hurry? :-)

# Another Perl edition of a song:
# The End, by The Beatles
END {
  $you->take($love) eq $you->made($love) ;
}