Network Port Numbers Directory

Search standard and well-known TCP/UDP port numbers (HTTP 80, SSH 22, Postgres 5432, Redis 6379).

tool id:port-reference

ipv4 / cidr configurationSubnet & Host Range Calculator

IP Address

Prefix / CIDR (/24)

Common Subnets:

Subnet Calculation ResultsPrivate RFC 1918

Network Address192.168.1.0/24

Subnet Netmask255.255.255.0

Broadcast Address192.168.1.255

Wildcard Mask0.0.0.255

First Usable IP192.168.1.1

Last Usable IP192.168.1.254

Usable Hosts254 (256 total)

Usable Range192.168.1.1 — 192.168.1.254

IP in Binary:11000000.10101000.00000001.10010110

Netmask in Binary:11111111.11111111.11111111.00000000

related tools in Networking

Calculate network address, broadcast address, netmask, wildcard, usable host range, and host count.