¿Cómo pegar sólo números en un documento de texto?

47.153.128.0 47.153.191.255 47.154.0 47.154.255.255 58.30 .0 58.30 15.255 58.30

58.30.21.0 58.30.21.255

58. 30.22.0 58.31.103.255

58.31.104.0 58.31.104.255

58.31.105.0 58.31.165.255

58.31.166.0 58.31.166.255

58.31.167.0 58.31.255.255< /p >

58.42.233.14 58.42.233.14 58.50.24.172 58.50.24.172 58.50.54.6 58.51.147.150 58.51.147.150

58.54.129.52 .52 58.83.128.0 58.83.145.2

58.83.145.4 58.83.155.255