IP Subnetting Breaks
Quick-reference tables showing the address breakpoints for each subnet mask value. Jump to a specific mask range using the links below.
Subnet Mask 255.255.255.192 (/26 — 4 subnets, 62 hosts each)
Block size: 64
| Subnet No. | Subnet Address | Address Range | Broadcast |
|---|---|---|---|
| 0 | 0 | 1-62 | 63 |
| 1 | 64 | 65-126 | 127 |
| 2 | 128 | 129-190 | 191 |
| 3 | 192 | 193-254 | 255 |
Subnet Mask 255.255.255.224 (/27 — 8 subnets, 30 hosts each)
Block size: 32
| Subnet No. | Subnet Address | Address Range | Broadcast |
|---|---|---|---|
| 0 | 0 | 1-30 | 31 |
| 1 | 32 | 33-62 | 63 |
| 2 | 64 | 65-94 | 95 |
| 3 | 96 | 97-126 | 127 |
| 4 | 128 | 129-158 | 159 |
| 5 | 160 | 161-190 | 191 |
| 6 | 192 | 193-222 | 223 |
| 7 | 224 | 225-254 | 255 |
Subnet Mask 255.255.255.240 (/28 — 16 subnets, 14 hosts each)
Block size: 16
| Subnet No. | Subnet Address | Address Range | Broadcast |
|---|---|---|---|
| 0 | 0 | 1-14 | 15 |
| 1 | 16 | 17-30 | 31 |
| 2 | 32 | 33-46 | 47 |
| 3 | 48 | 49-62 | 63 |
| 4 | 64 | 65-78 | 79 |
| 5 | 80 | 81-94 | 95 |
| 6 | 96 | 97-110 | 111 |
| 7 | 112 | 113-126 | 127 |
| 8 | 128 | 129-142 | 143 |
| 9 | 144 | 145-158 | 159 |
| 10 | 160 | 161-174 | 175 |
| 11 | 176 | 177-190 | 191 |
| 12 | 192 | 193-206 | 207 |
| 13 | 208 | 209-222 | 223 |
| 14 | 224 | 225-238 | 239 |
| 15 | 240 | 241-254 | 255 |
Subnet Mask 255.255.255.248 (/29 — 32 subnets, 6 hosts each)
Block size: 8
| Subnet No. | Subnet Address | Address Range | Broadcast |
|---|---|---|---|
| 0 | 0 | 1-6 | 7 |
| 1 | 8 | 9-14 | 15 |
| 2 | 16 | 17-22 | 23 |
| 3 | 24 | 25-30 | 31 |
| 4 | 32 | 33-38 | 39 |
| 5 | 40 | 41-46 | 47 |
| 6 | 48 | 49-54 | 55 |
| 7 | 56 | 57-62 | 63 |
| 8 | 64 | 65-70 | 71 |
| 9 | 72 | 73-78 | 79 |
| 10 | 80 | 81-86 | 87 |
| 11 | 88 | 89-94 | 95 |
| 12 | 96 | 97-102 | 103 |
| 13 | 104 | 105-110 | 111 |
| 14 | 112 | 113-118 | 119 |
| 15 | 120 | 121-126 | 127 |
| 16 | 128 | 129-134 | 135 |
| 17 | 136 | 137-142 | 143 |
| 18 | 144 | 145-150 | 151 |
| 19 | 152 | 153-158 | 159 |
| 20 | 160 | 161-166 | 167 |
| 21 | 168 | 169-174 | 175 |
| 22 | 176 | 177-182 | 183 |
| 23 | 184 | 185-190 | 191 |
| 24 | 192 | 193-198 | 199 |
| 25 | 200 | 201-206 | 207 |
| 26 | 208 | 209-214 | 215 |
| 27 | 216 | 217-222 | 223 |
| 28 | 224 | 225-230 | 231 |
| 29 | 232 | 233-238 | 239 |
| 30 | 240 | 241-246 | 247 |
| 31 | 248 | 249-254 | 255 |
Subnet Mask 255.255.255.252 (/30 — 64 subnets, 2 hosts each)
Block size: 4
| Subnet No. | Subnet Address | Address Range | Broadcast |
|---|---|---|---|
| 0 | 0 | 1-2 | 3 |
| 1 | 4 | 5-6 | 7 |
| 2 | 8 | 9-10 | 11 |
| 3 | 12 | 13-14 | 15 |
| 4 | 16 | 17-18 | 19 |
| 5 | 20 | 21-22 | 23 |
| 6 | 24 | 25-26 | 27 |
| 7 | 28 | 29-30 | 31 |
| 8 | 32 | 33-34 | 35 |
| 9 | 36 | 37-38 | 39 |
| 10 | 40 | 41-42 | 43 |
| 11 | 44 | 45-46 | 47 |
| 12 | 48 | 49-50 | 51 |
| 13 | 52 | 53-54 | 55 |
| 14 | 56 | 57-58 | 59 |
| 15 | 60 | 61-62 | 63 |
| 16 | 64 | 65-66 | 67 |
| 17 | 68 | 69-70 | 71 |
| 18 | 72 | 73-74 | 75 |
| 19 | 76 | 77-78 | 79 |
| 20 | 80 | 81-82 | 83 |
| 21 | 84 | 85-86 | 87 |
| 22 | 88 | 89-90 | 91 |
| 23 | 92 | 93-94 | 95 |
| 24 | 96 | 97-98 | 99 |
| 25 | 100 | 101-102 | 103 |
| 26 | 104 | 105-106 | 107 |
| 27 | 108 | 109-110 | 111 |
| 28 | 112 | 113-114 | 115 |
| 29 | 116 | 117-118 | 119 |
| 30 | 120 | 121-122 | 123 |
| 31 | 124 | 125-126 | 127 |
| 32 | 128 | 129-130 | 131 |
| 33 | 132 | 133-134 | 135 |
| 34 | 136 | 137-138 | 139 |
| 35 | 140 | 141-142 | 143 |
| 36 | 144 | 145-146 | 147 |
| 37 | 148 | 149-150 | 151 |
| 38 | 152 | 153-154 | 155 |
| 39 | 156 | 157-158 | 159 |
| 40 | 160 | 161-162 | 163 |
| 41 | 164 | 165-166 | 167 |
| 42 | 168 | 169-170 | 171 |
| 43 | 172 | 173-174 | 175 |
| 44 | 176 | 177-178 | 179 |
| 45 | 180 | 181-182 | 183 |
| 46 | 184 | 185-186 | 187 |
| 47 | 188 | 189-190 | 191 |
| 48 | 192 | 193-194 | 195 |
| 49 | 196 | 197-198 | 199 |
| 50 | 200 | 201-202 | 203 |
| 51 | 204 | 205-206 | 207 |
| 52 | 208 | 209-210 | 211 |
| 53 | 212 | 213-214 | 215 |
| 54 | 216 | 217-218 | 219 |
| 55 | 220 | 221-222 | 223 |
| 56 | 224 | 225-226 | 227 |
| 57 | 228 | 229-230 | 231 |
| 58 | 232 | 233-234 | 235 |
| 59 | 236 | 237-238 | 239 |
| 60 | 240 | 241-242 | 243 |
| 61 | 244 | 245-246 | 247 |
| 62 | 248 | 249-250 | 251 |
| 63 | 252 | 253-254 | 255 |