Class B or the 12 block is 172.16.0.0/12. So: 10/8, 172.16/12, 192.168/16.

		gerdesj 13 days ago \| parent \| context \| favorite \| on: IPv6 just turned 30 and still hasn't taken over th... Class B or the 12 block is 172.16.0.0/12. So: 10/8, 172.16/12, 192.168/16.