/30 Subnet Guide
Learn what a /30 IPv4 subnet means, including subnet mask, total addresses and usable hosts.
/30 CIDR Details
CIDR/30
Subnet Mask255.255.255.252
Total Addresses4
Usable Hosts2
Explanation: A /30 prefix uses 30 bits for the network and 2 bits for host addresses.
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This page is useful for subnet planning, CCNA study, MikroTik IP addressing, VLAN design and firewall documentation.