In order to be able to accruately give you a regex that will help it is important to have the context right. So would it be possible to have a number of test case strings off valid/invalid data.

Meanwhile :-

/^\D*(?!7000|7777|7778|3886200|2200|8488|3406|9100|29389988|7688|5000|
+2
+0|3408|3404|7648)\D*[0-9]+/
[download]

Hope it helps
UnderMine