Gratis · Rete e infrastruttura IT
Calcolatore VLSM.
Dividi un blocco IPv4 in sottoreti di dimensione variabile in base agli host di ciascuna, con piano di indirizzamento completo e spazio libero.
- Block size
- 1,024 addresses
- Allocated
- 548 addresses
- Free
- 476 addresses
- Block used
- 53.5 %
- Hosts requested
- 507
- Free blocks
- 192.168.2.36/30, 192.168.2.40/29, 192.168.2.48/28, 192.168.2.64/26, 192.168.2.128/25, 192.168.3.0/24
Allocation plan
| Name | Hosts needed | Subnet | Mask | First host | Last host | Broadcast | Usable | Spare |
|---|---|---|---|---|---|---|---|---|
| Guests Wi-Fi | 250 | 192.168.0.0/24 | 255.255.255.0 | 192.168.0.1 | 192.168.0.254 | 192.168.0.255 | 254 | 4 |
| Sales | 120 | 192.168.1.0/25 | 255.255.255.128 | 192.168.1.1 | 192.168.1.126 | 192.168.1.127 | 126 | 6 |
| Engineering | 60 | 192.168.1.128/26 | 255.255.255.192 | 192.168.1.129 | 192.168.1.190 | 192.168.1.191 | 62 | 2 |
| Voice | 50 | 192.168.1.192/26 | 255.255.255.192 | 192.168.1.193 | 192.168.1.254 | 192.168.1.255 | 62 | 12 |
| Servers | 25 | 192.168.2.0/27 | 255.255.255.224 | 192.168.2.1 | 192.168.2.30 | 192.168.2.31 | 30 | 5 |
| WAN link | 2 | 192.168.2.32/30 | 255.255.255.252 | 192.168.2.33 | 192.168.2.34 | 192.168.2.35 | 2 | 0 |
- Hosts needed should include the gateway and any addresses reserved for routers or HA pairs.
- Every subnet starts on a multiple of its own size, as routing requires.
Come usare questo strumento: Calcolatore VLSM
Inserisci i dati o scegli il file. Regola le opzioni, genera il risultato e controllalo prima di copiarlo o scaricarlo.
Limiti e formati supportati
I dati vengono elaborati sul tuo dispositivo.
Note tecniche in inglese
IPv4 only, up to 200 subnets. Subnets that do not fit are listed as such rather than overlapping. Everything is calculated in your browser; nothing is sent or probed on the network.
Each subnet gets the smallest prefix whose usable addresses cover its hosts. Largest subnets are placed first, each aligned on a multiple of its own size, so no address is wasted between them. The remaining space is summarised as CIDR blocks.
192.168.0.0/22 split for 250, 120, 60, 50, 25 and 2 hosts gives /24, /25, /26, /26, /27 and /30 with 476 addresses left.