python - Regex working wrong, matching unexpected things

I have this regex:

[\(\+\[]?[0-9]([\-\)\.\/-\]]?\s?\(?[0-9\s\)]){8,20}?

It must match only phone numbers, but instead it also matches things like:

[95.86.22.137]
95.86.22.137

(192.168.1.94)
274.1363525390625px;">
2014-8-720:32:45

Can someone help me correct this regex please ?