Doug's Subnet Cheater

This page is because i'm too lazy to calculate individual ip's every time

192 subnet /26 4 Networks, 62 hosts/network. Uses last 6 bits from octet
Network	First Usable Address	Last Usable Address	broadcast
0	1	62	63
64	65	126	127
128	129	190	191
192	193	254	255

224 subnet /27 8 Networks, 30 hosts/network. Uses last 5 bits from octet
Network	First Usable Address	Last Usable Address	broadcast
0	1	30	31
32	33	62	63
64	65	94	95
96	97	126	127
128	129	158	159
160	161	190	191
192	193	222	223
224	225	254	255

240 subnet /28 16 Networks, 15 hosts/network. Uses last 4 bits from octet
Network	First Usable Address	Last Usable Address	broadcast
0	1	14	15
16	17	30	31
32	33	46	47
48	49	62	63
64	65	78	79
80	81	94	95
96	97	110	111
112	113	126	127
128	129	142	143
144	145	158	159
160	161	174	175
176	177	190	191
192	193	206	207
208	209	222	223
224	225	238	239
240	241	254	255

248 subnet /29 32 Networks, 6 hosts/network. Uses last 3 bits from octet
Network	First Usable Address	Last Usable Address	broadcast
0	1	6	7
8	9	14	15
16	17	22	23
24	25	30	31
32	33	38	39
40	41	46	47
48	49	54	55
56	57	62	63
64	65	70	71
72	73	78	79
80	81	86	87
88	89	94	95
96	97	102	103
104	105	110	111
112	113	118	119
120	121	126	127
128	129	134	135
136	137	142	143
144	145	150	151
152	153	158	159
160	161	166	167
168	169	174	175
176	177	182	183
184	185	190	191
192	193	198	199
200	201	206	207
208	209	214	215
216	217	222	223
224	225	230	231
232	233	238	239
240	241	246	247
248	249	254	255

252 subnet /30 64 Networks, 2 hosts/network. Uses last 2 bits from octet
Network	First Usable Address	Last Usable Address	broadcast
0	1	2	3
4	5	6	7
8	9	10	11
12	13	14	15
16	17	18	19
20	21	22	23
24	25	26	27
28	29	30	31
32	33	34	35
36	37	38	39
40	41	42	43
44	45	46	47
48	49	50	51
52	53	54	55
56	57	58	59
60	61	62	63
64	65	66	67
68	69	70	71
72	73	74	75
76	77	78	79
80	81	82	83
84	85	86	87
88	89	90	91
92	93	94	95
96	97	98	99
100	101	102	103
104	105	106	107
108	109	110	111
112	113	114	115
116	117	118	119
120	121	122	123
124	125	126	127
128	129	130	131
132	133	134	135
136	137	138	139
140	141	142	143
144	145	146	147
148	149	150	151
152	153	154	155
156	157	158	159
160	161	162	163
164	165	166	167
168	169	170	171
172	173	174	175
176	177	178	179
180	181	182	183
184	185	186	187
188	189	190	191
192	193	194	195
196	197	198	199
200	201	202	203
204	205	206	207
208	209	210	211
212	213	214	215
216	217	218	219
220	221	222	223
224	225	226	227
228	229	230	231
232	233	234	235
236	237	238	239
240	241	242	243
244	245	246	247
248	249	250	251
252	253	254	255

/28's are frequently useful, so here is a map of the individual ip's for a class c broken up into /28's

x.x.x.0

x.x.x.16

x.x.x.32

x.x.x.48

x.x.x.64

x.x.x.80

x.x.x.96

x.x.x.112

x.x.x.128

x.x.x.144

x.x.x.160

x.x.x.176

x.x.x.192

x.x.x.208

x.x.x.224

x.x.x.240

x.x.x.1

x.x.x.17

x.x.x.33

x.x.x.49

x.x.x.65

x.x.x.81

x.x.x.97

x.x.x.113

x.x.x.129

x.x.x.145

x.x.x.161

x.x.x.177

x.x.x.193

x.x.x.209

x.x.x.225

x.x.x.241

x.x.x.2

x.x.x.18

x.x.x.34

x.x.x.50

x.x.x.66

x.x.x.82

x.x.x.98

x.x.x.114

x.x.x.130

x.x.x.146

x.x.x.162

x.x.x.178

x.x.x.194

x.x.x.210

x.x.x.226

x.x.x.242

x.x.x.3

x.x.x.19

x.x.x.35

x.x.x.51

x.x.x.67

x.x.x.83

x.x.x.99

x.x.x.115

x.x.x.131

x.x.x.147

x.x.x.163

x.x.x.179

x.x.x.195

x.x.x.211

x.x.x.227

x.x.x.243

x.x.x.4

x.x.x.20

x.x.x.36

x.x.x.52

x.x.x.68

x.x.x.84

x.x.x.100

x.x.x.116

x.x.x.132

x.x.x.148

x.x.x.164

x.x.x.180

x.x.x.196

x.x.x.212

x.x.x.228

x.x.x.244

x.x.x.5

x.x.x.21

x.x.x.37

x.x.x.53

x.x.x.69

x.x.x.85

x.x.x.101

x.x.x.117

x.x.x.133

x.x.x.149

x.x.x.165

x.x.x.181

x.x.x.197

x.x.x.213

x.x.x.229

x.x.x.245

x.x.x.6

x.x.x.22

x.x.x.38

x.x.x.54

x.x.x.70

x.x.x.86

x.x.x.102

x.x.x.118

x.x.x.134

x.x.x.150

x.x.x.166

x.x.x.182

x.x.x.198

x.x.x.214

x.x.x.230

x.x.x.246

x.x.x.7

x.x.x.23

x.x.x.39

x.x.x.55

x.x.x.71

x.x.x.87

x.x.x.103

x.x.x.119

x.x.x.135

x.x.x.151

x.x.x.167

x.x.x.183

x.x.x.199

x.x.x.215

x.x.x.231

x.x.x.247

x.x.x.8

x.x.x.24

x.x.x.40

x.x.x.56

x.x.x.72

x.x.x.88

x.x.x.104

x.x.x.120

x.x.x.136

x.x.x.152

x.x.x.168

x.x.x.184

x.x.x.200

x.x.x.216

x.x.x.232

x.x.x.248

x.x.x.9

x.x.x.25

x.x.x.41

x.x.x.57

x.x.x.73

x.x.x.89

x.x.x.105

x.x.x.121

x.x.x.137

x.x.x.153

x.x.x.169

x.x.x.185

x.x.x.201

x.x.x.217

x.x.x.233

x.x.x.249

x.x.x.10

x.x.x.26

x.x.x.42

x.x.x.58

x.x.x.74

x.x.x.90

x.x.x.106

x.x.x.122

x.x.x.138

x.x.x.154

x.x.x.170

x.x.x.186

x.x.x.202

x.x.x.218

x.x.x.234

x.x.x.250

x.x.x.11

x.x.x.27

x.x.x.43

x.x.x.59

x.x.x.75

x.x.x.91

x.x.x.107

x.x.x.123

x.x.x.139

x.x.x.155

x.x.x.171

x.x.x.187

x.x.x.203

x.x.x.219

x.x.x.235

x.x.x.251

x.x.x.12

x.x.x.28

x.x.x.44

x.x.x.60

x.x.x.76

x.x.x.92

x.x.x.108

x.x.x.124

x.x.x.140

x.x.x.156

x.x.x.172

x.x.x.188

x.x.x.204

x.x.x.220

x.x.x.236

x.x.x.252

x.x.x.13

x.x.x.29

x.x.x.45

x.x.x.61

x.x.x.77

x.x.x.93

x.x.x.109

x.x.x.125

x.x.x.141

x.x.x.157

x.x.x.173

x.x.x.189

x.x.x.205

x.x.x.221

x.x.x.237

x.x.x.253

x.x.x.14

x.x.x.30

x.x.x.46

x.x.x.62

x.x.x.78

x.x.x.94

x.x.x.110

x.x.x.126

x.x.x.142

x.x.x.158

x.x.x.174

x.x.x.190

x.x.x.206

x.x.x.222

x.x.x.238

x.x.x.254

x.x.x.15

x.x.x.31

x.x.x.47

x.x.x.63

x.x.x.79

x.x.x.95

x.x.x.111

x.x.x.127

x.x.x.143

x.x.x.159

x.x.x.175

x.x.x.191

x.x.x.207

x.x.x.223

x.x.x.239

x.x.x.255

three dnp3 addresses per network

0-2

3-5

6-8

9-11

12-14

15-17

18-20

21-23

24-26

27-29

30-32

33-35

36-38

39-41

42-44

45-47

50-52

53-55

56-58

59-61

62-64

65-67

68-70

71-73

74-76

77-79

80-82

83-85

86-88

89-91

92-94

95-97

Network	First Usable Address	Last Usable Address	broadcast
0	1	30	31
32	33	62	63
64	65	94	95
96	97	126	127
128	129	158	159
160	161	190	191
192	193	222	223
224	225	254	255

Network	First Usable Address	Last Usable Address	broadcast
0	1	14	15
16	17	30	31
32	33	46	47
48	49	62	63
64	65	78	79
80	81	94	95
96	97	110	111
112	113	126	127
128	129	142	143
144	145	158	159
160	161	174	175
176	177	190	191
192	193	206	207
208	209	222	223
224	225	238	239
240	241	254	255

Network	First Usable Address	Last Usable Address	broadcast
0	1	6	7
8	9	14	15
16	17	22	23
24	25	30	31
32	33	38	39
40	41	46	47
48	49	54	55
56	57	62	63
64	65	70	71
72	73	78	79
80	81	86	87
88	89	94	95
96	97	102	103
104	105	110	111
112	113	118	119
120	121	126	127
128	129	134	135
136	137	142	143
144	145	150	151
152	153	158	159
160	161	166	167
168	169	174	175
176	177	182	183
184	185	190	191
192	193	198	199
200	201	206	207
208	209	214	215
216	217	222	223
224	225	230	231
232	233	238	239
240	241	246	247
248	249	254	255

Network	First Usable Address	Last Usable Address	broadcast
0	1	2	3
4	5	6	7
8	9	10	11
12	13	14	15
16	17	18	19
20	21	22	23
24	25	26	27
28	29	30	31
32	33	34	35
36	37	38	39
40	41	42	43
44	45	46	47
48	49	50	51
52	53	54	55
56	57	58	59
60	61	62	63
64	65	66	67
68	69	70	71
72	73	74	75
76	77	78	79
80	81	82	83
84	85	86	87
88	89	90	91
92	93	94	95
96	97	98	99
100	101	102	103
104	105	106	107
108	109	110	111
112	113	114	115
116	117	118	119
120	121	122	123
124	125	126	127
128	129	130	131
132	133	134	135
136	137	138	139
140	141	142	143
144	145	146	147
148	149	150	151
152	153	154	155
156	157	158	159
160	161	162	163
164	165	166	167
168	169	170	171
172	173	174	175
176	177	178	179
180	181	182	183
184	185	186	187
188	189	190	191
192	193	194	195
196	197	198	199
200	201	202	203
204	205	206	207
208	209	210	211
212	213	214	215
216	217	218	219
220	221	222	223
224	225	226	227
228	229	230	231
232	233	234	235
236	237	238	239
240	241	242	243
244	245	246	247
248	249	250	251
252	253	254	255

Network	First Usable Address	Last Usable Address	broadcast
0	1	30	31
32	33	62	63
64	65	94	95
96	97	126	127
128	129	158	159
160	161	190	191
192	193	222	223
224	225	254	255

Network	First Usable Address	Last Usable Address	broadcast
0	1	14	15
16	17	30	31
32	33	46	47
48	49	62	63
64	65	78	79
80	81	94	95
96	97	110	111
112	113	126	127
128	129	142	143
144	145	158	159
160	161	174	175
176	177	190	191
192	193	206	207
208	209	222	223
224	225	238	239
240	241	254	255

Network	First Usable Address	Last Usable Address	broadcast
0	1	6	7
8	9	14	15
16	17	22	23
24	25	30	31
32	33	38	39
40	41	46	47
48	49	54	55
56	57	62	63
64	65	70	71
72	73	78	79
80	81	86	87
88	89	94	95
96	97	102	103
104	105	110	111
112	113	118	119
120	121	126	127
128	129	134	135
136	137	142	143
144	145	150	151
152	153	158	159
160	161	166	167
168	169	174	175
176	177	182	183
184	185	190	191
192	193	198	199
200	201	206	207
208	209	214	215
216	217	222	223
224	225	230	231
232	233	238	239
240	241	246	247
248	249	254	255

Network	First Usable Address	Last Usable Address	broadcast
0	1	2	3
4	5	6	7
8	9	10	11
12	13	14	15
16	17	18	19
20	21	22	23
24	25	26	27
28	29	30	31
32	33	34	35
36	37	38	39
40	41	42	43
44	45	46	47
48	49	50	51
52	53	54	55
56	57	58	59
60	61	62	63
64	65	66	67
68	69	70	71
72	73	74	75
76	77	78	79
80	81	82	83
84	85	86	87
88	89	90	91
92	93	94	95
96	97	98	99
100	101	102	103
104	105	106	107
108	109	110	111
112	113	114	115
116	117	118	119
120	121	122	123
124	125	126	127
128	129	130	131
132	133	134	135
136	137	138	139
140	141	142	143
144	145	146	147
148	149	150	151
152	153	154	155
156	157	158	159
160	161	162	163
164	165	166	167
168	169	170	171
172	173	174	175
176	177	178	179
180	181	182	183
184	185	186	187
188	189	190	191
192	193	194	195
196	197	198	199
200	201	202	203
204	205	206	207
208	209	210	211
212	213	214	215
216	217	218	219
220	221	222	223
224	225	226	227
228	229	230	231
232	233	234	235
236	237	238	239
240	241	242	243
244	245	246	247
248	249	250	251
252	253	254	255

Network	First Usable Address	Last Usable Address	broadcast
0	1	30	31
32	33	62	63
64	65	94	95
96	97	126	127
128	129	158	159
160	161	190	191
192	193	222	223
224	225	254	255

Network	First Usable Address	Last Usable Address	broadcast
0	1	14	15
16	17	30	31
32	33	46	47
48	49	62	63
64	65	78	79
80	81	94	95
96	97	110	111
112	113	126	127
128	129	142	143
144	145	158	159
160	161	174	175
176	177	190	191
192	193	206	207
208	209	222	223
224	225	238	239
240	241	254	255

Network	First Usable Address	Last Usable Address	broadcast
0	1	6	7
8	9	14	15
16	17	22	23
24	25	30	31
32	33	38	39
40	41	46	47
48	49	54	55
56	57	62	63
64	65	70	71
72	73	78	79
80	81	86	87
88	89	94	95
96	97	102	103
104	105	110	111
112	113	118	119
120	121	126	127
128	129	134	135
136	137	142	143
144	145	150	151
152	153	158	159
160	161	166	167
168	169	174	175
176	177	182	183
184	185	190	191
192	193	198	199
200	201	206	207
208	209	214	215
216	217	222	223
224	225	230	231
232	233	238	239
240	241	246	247
248	249	254	255

Network	First Usable Address	Last Usable Address	broadcast
0	1	2	3
4	5	6	7
8	9	10	11
12	13	14	15
16	17	18	19
20	21	22	23
24	25	26	27
28	29	30	31
32	33	34	35
36	37	38	39
40	41	42	43
44	45	46	47
48	49	50	51
52	53	54	55
56	57	58	59
60	61	62	63
64	65	66	67
68	69	70	71
72	73	74	75
76	77	78	79
80	81	82	83
84	85	86	87
88	89	90	91
92	93	94	95
96	97	98	99
100	101	102	103
104	105	106	107
108	109	110	111
112	113	114	115
116	117	118	119
120	121	122	123
124	125	126	127
128	129	130	131
132	133	134	135
136	137	138	139
140	141	142	143
144	145	146	147
148	149	150	151
152	153	154	155
156	157	158	159
160	161	162	163
164	165	166	167
168	169	170	171
172	173	174	175
176	177	178	179
180	181	182	183
184	185	186	187
188	189	190	191
192	193	194	195
196	197	198	199
200	201	202	203
204	205	206	207
208	209	210	211
212	213	214	215
216	217	218	219
220	221	222	223
224	225	226	227
228	229	230	231
232	233	234	235
236	237	238	239
240	241	242	243
244	245	246	247
248	249	250	251
252	253	254	255