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● network/30 = Mask 255.255.255.252 • 2 Usable Hosts

/30 Subnet Mask (255.255.255.252): Usable Hosts (2), Wildcard & IPv4 Range

Instant /30 CIDR reference: Subnet Mask is 255.255.255.252, Wildcard 0.0.0.3, Total IPs 4, and 2 Usable Hosts. Ideal for Point-to-Point Inter-Router WAN Link (2 Usable IPs).

⚡ Instant Calculated Answer
/30 = Mask 255.255.255.252 • 2 Usable Hosts
⚡Open Full Interactive Calculator (subnet-calculator) →

📊Reference Table & Engineering Specs

Parameter / MetricSpecification Value
CIDR Prefix Notation/30
Dotted-Decimal Subnet Mask255.255.255.252
Wildcard Mask (OSPF / ACL)0.0.0.3
Total IPv4 Addresses (2^2)4 IP
Total Usable Hosts (2^2 - 2)2 Host
Sample Network ID192.168.1.0/30
Sample Usable Host Range192.168.1.1 – 192.168.1.2
Sample Broadcast Address192.168.1.3
Ideal Field Use CaseLink Point-to-Point Antar Router WAN (2 IP Host)

📖Technical Explanation & Methodology

CIDR prefix /30 allocates 30 network bits and leaves 2 host bits (32 - 30 = 2). Using 2^2, each /30 block contains 4 total IPs and 2 usable host addresses (Point-to-Point Inter-Router WAN Link (2 Usable IPs)).

💻 Ready-to-Deploy CLI Snippet:
/ip address add address=192.168.1.1/30 interface=bridge-lan comment="Subnet /30 (2 Host) - KalkuNet.com"

❓Frequently Asked Questions (FAQ)

What is the Subnet Mask for /30?

The dotted-decimal Subnet Mask for /30 is 255.255.255.252 with a Wildcard Mask of 0.0.0.3.

How many usable hosts are in a /30 network?

A /30 subnet provides 4 total IPs and 2 usable hosts.

🔗Other Related Scenarios

/32 = Mask 255.255.255.255 • 1 Usable Hosts
/32 Subnet Mask (255.255.255.255): Usable Hosts (1), Wildcard & IPv4 Range
/29 = Mask 255.255.255.248 • 6 Usable Hosts
/29 Subnet Mask (255.255.255.248): Usable Hosts (6), Wildcard & IPv4 Range
/28 = Mask 255.255.255.240 • 14 Usable Hosts
/28 Subnet Mask (255.255.255.240): Usable Hosts (14), Wildcard & IPv4 Range
/27 = Mask 255.255.255.224 • 30 Usable Hosts
/27 Subnet Mask (255.255.255.224): Usable Hosts (30), Wildcard & IPv4 Range