Subnetting Cheat Sheet by [deleted]

1st	2nd	3rd	4th
/1	/9	/17	/25
/2	/10	/18	/26
/3	/11	/19	/27
/4	/12	/20	/28
/5	/13	/21	/29
/6	/14	/22	/30
/7	/15	/23	/31
/8	/16	/24	/32

	1st	2nd	3rd
Address	165	245	12
Mask	255	255	255
Network	165	245	12
Broadcast	165	245	12
First IP	165	245	12
Last IP	165	245	12

4th

88

192

64

127

65

126

2^1	2	2^10	1,024
2^2	4	2^11	2,048
2^3	8	2^12	4,096
2^4	16	2^13	8,192
2^5	32	2^14	16,384
2^6	64	2^15	32,768
2^7	128	2^16	65,536
2^8	256	2^17	131,072
2^9	512	2^18	262,144

0	64	128	192
8	72	136	200
16	80	144	208
24	88	152	216
32	96	160	224
40	104	168	232
48	112	176	240
56	120	184	248
64	128	192	256