LearntoSub.net

Learn to Subnet with no binary conversions.

	Prefix Length	Total IPs	Usable IPs	Netmask	Block Size
	/8	16777216	16777214	255.0.0.0	1
	/9	8388608	8388606	255.128.0.0	128
	/10	4194304	4194302	255.192.0.0	64
	/11	2097152	2097150	255.224.0.0	32
	/12	1048576	1048574	255.240.0.0	16
	/13	524288	524286	255.248.0.0	8
	/14	262144	262142	255.252.0.0	4
	/15	131072	131070	255.254.0.0	2
	/16	65536	65534	255.255.0.0	1
	/17	32768	32766	255.255.128.0	128
	/18	16384	16382	255.255.192.0	64
	/19	8192	8190	255.255.224.0	32
	/20	4096	4094	255.255.240.0	16
	/21	2048	2046	255.255.248.0	8
	/22	1024	1022	255.255.252.0	4
	/23	512	510	255.255.254.0	2
	/24	256	254	255.255.255.0	1
	/25	128	126	255.255.255.128	128
	/26	64	62	255.255.255.192	64
	/27	32	30	255.255.255.224	32
	/28	16	14	255.255.255.240	16
	/29	8	6	255.255.255.248	8
	/30	4	2	255.255.255.252	4