Utilidades

Calculadora CIDR

Calcula el rango de direcciones IP a partir de la notación CIDR.

Datos clave

CIDR calculator online: enter an address with a prefix such as 192.168.1.0/24 and get the mask, wildcard, address range and host count. Free, no sign-up. IPv4 only, no subnet splitting.

Precio: Gratis
Registro: No necesario
Procesamiento: On our server: the address from the query string is parsed with plain 32-bit arithmetic; no network or database lookups
Entrada: An IPv4 address with a prefix, such as 192.168.1.0/24
Límites: No sign-up and no limits; IPv4 only and only the prefix notation (0–32)
Resultado: Subnet mask, wildcard mask, network and broadcast address, first and last host, total address count and usable host count
Última actualización: 2026-10-26

CIDR calculator: CIDR to IP range

Enter a block in CIDR notation, such as 203.0.113.0/22, and get its range: network address, first and last host, broadcast, total addresses and how many you can assign to devices. Your prefix is highlighted in the reference table. IPv4 only. For a detailed look at a network around a specific address, use the subnet calculator.

Conversión de CIDR a rango de IP

Total addresses and usable hosts in the block

Subnet mask and wildcard mask

Cómo usar

Enter a block in CIDR format, e.g. 192.168.1.0/24
Read the first and last address of the range
Compare total addresses with usable hosts

FAQ

Enter an address with a prefix such as 10.0.0.0/22 and run the calculation. You get the network and broadcast address, the first and last host and the address count.

A /24 has 256 addresses, 254 of them usable for hosts: the network and broadcast addresses are subtracted.

It is the inverted subnet mask: for 255.255.255.0 the wildcard is 0.0.0.255. It is used in Cisco access lists and some firewalls.

For /31 and /32 we do not subtract two addresses: a /31 has 2 usable addresses and a /32 has one.

No, IPv4 only. For IPv6 blocks use a tool that supports that protocol.

PromoPilot frente a alternativas: comparación

Comparamos solo lo que está confirmado en las páginas de cada servicio. Donde no pudimos confirmar un dato, la celda muestra "—".

Parámetro	PromoPilot	Subnet Calculator (CIDR)
Mask, wildcard, range and host count	✓	✓ wildcard mask for ACLs, the network in CIDR and the address range
Subnet splitting	✗	✓ takes the required number of addresses and subnets as input
IPv6	✗	—

Desplaza la tabla hacia los lados

Dónde somos más débiles: no subnet splitting or IPv6, and you cannot enter a mask instead of a prefix.

Cuándo elegir PromoPilot: When you need the bounds of a block fast, for a firewall, an ACL, an allow-list or an SPF record. For network planning with subnet splitting and IPv6 use other calculators.

Comprobado el: 2026-10-16. "—" significa que no está confirmado en la página oficial; las condiciones y los precios cambian, así que consulta los sitios de cada servicio.