This Howto charts will help anyone seeking to know the Gateway, netmask, available IP address you can use on a specific IPV4 subnet.
Example: 23.238.0.8/29
- The CDIR chart tells me the netmask for this /29 is 255.255.255.248
- The /29 Subnet charts tell me that .8/29 gateway is .9 meaning that my gateway is 23.238.0.9
- The /29 Subnet chart has 10-14 as the vailable IP address for this /29, so 5 usable IP.
This chart shows the Addresses for each subnet, their Hosts are the available IP that you can use, the netmask for the subnet you have.
CIDR chart
| CIDR | Addresses | Hosts | Netmask | Amount of a Class C |
|---|---|---|---|---|
| /30 | 4 | 2 | 255.255.255.252 | 1/64 |
| /29 | 8 | 6 | 255.255.255.248 | 1/32 |
| /28 | 16 | 14 | 255.255.255.240 | 1/16 |
| /27 | 32 | 30 | 255.255.255.224 | 1/8 |
| /26 | 64 | 62 | 255.255.255.192 | 1/4 |
| /25 | 128 | 126 | 255.255.255.128 | 1/2 |
| /24 | 256 | 254 | 255.255.255.0 | 1 |
| /23 | 512 | 510 | 255.255.254.0 | 2 |
| /22 | 1024 | 1022 | 255.255.252.0 | 4 |
| /21 | 2048 | 2046 | 255.255.248.0 | 8 |
| /20 | 4096 | 4094 | 255.255.240.0 | 16 |
| /19 | 8192 | 8190 | 255.255.224.0 | 32 |
| /18 | 16384 | 16382 | 255.255.192.0 | 64 |
| /17 | 32768 | 32766 | 255.255.128.0 | 128 |
| /16 | 65536 | 65534 | 255.255.0.0 | 256 |
/25 Subnet — 126 Hosts
| Network # | Gateway | Start-End |
|---|---|---|
| .0 | .1 | .2-.126 |
| .128 | .129 | .130-.254 |
/26 Subnet — 62 Hosts
| Network # | Gateway | Start-End |
|---|---|---|
| .0 | .1 | .2-.62 |
| .64 | .65 | .66-.126 |
| .128 | .129 | .130-.190 |
| .192 | .193 | .194-.254 |
/27 Subnet — 30 Hosts
| Network # | Gateway | Start-End |
|---|---|---|
| .0 | .1 | .2-.30 |
| .32 | .33 | .34-.62 |
| .64 | .65 | .66-.94 |
| .96 | .97 | .98-.126 |
| .128 | .129 | .130-.158 |
| .160 | .161 | .162-.190 |
| .192 | .193 | .194-.222 |
| .224 | .225 | .226-.254 |
/28 Subnet — 14 Hosts
| Network # | Gateway | Start-End |
|---|---|---|
| .0 | .1 | .2-.14 |
| .16 | .17 | .18-.30 |
| .32 | .33 | .34-.46 |
| .48 | .49 | .50-.62 |
| .64 | .65 | .66-.78 |
| .80 | .81 | .82-.94 |
| .96 | .97 | .98-.110 |
| .112 | .113 | .114-.126 |
| .128 | .129 | .130-.142 |
| .144 | .145 | .146-.158 |
| .160 | .161 | .162-.174 |
| .176 | .177 | .178-.190 |
| .192 | .193 | .194-.206 |
| .208 | .209 | .210-.222 |
| .224 | .225 | .226-.238 |
| .240 | .241 | .242-.254 |
/29 Subnet– 6 Hosts
| Network # | Gateway | Start-End |
|---|---|---|
| .0 | .1 | .2-.6 |
| .8 | .9 | .10-.14 |
| .16 | .17 | .18-.22 |
| .24 | .25 | .26-.30 |
| .32 | .33 | .34-.38 |
| .40 | .41 | .42-.46 |
| .48 | .49 | .50-.54 |
| .56 | .57 | .58-.62 |
| .64 | .65 | .66-.70 |
| .72 | .73 | .74-.78 |
| .80 | .81 | .82-.86 |
| .88 | .89 | .90-.94 |
| .96 | .97 | .98-.102 |
| .104 | .105 | .106-.110 |
| .112 | .113 | .114-.118 |
| .120 | .121 | .122-.126 |
| .128 | .129 | .130-.134 |
| .136 | .137 | .138-.142 |
| .144 | .145 | .146-.150 |
| .152 | .153 | .154-.158 |
| .160 | .161 | .162-.166 |
| .168 | .169 | .170-.174 |
| .176 | .177 | .178-.182 |
| .184 | .185 | .186-.190 |
| .192 | .193 | .194-.198 |
| .200 | .201 | .202-.206 |
| .208 | .209 | .210-.214 |
| .216 | .217 | .224-.222 |
| .224 | .225 | .226-.230 |
| .232 | .233-.238 | .234-.238 |
| .240 | .241 | .242-.246 |
| .248 | .249 | .250-.254 |
声明：本站所有文章，如无特殊说明或标注，均为本站原创发布。任何个人或组织，在未征得本站同意时，禁止复制、盗用、采集、发布本站内容到任何网站、书籍等各类媒体平台。如若本站内容侵犯了原著者的合法权益，可联系我们进行处理。
