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● network/27 = Mask 255.255.255.224 • 30 Usable Hosts

/27 Subnet Mask (255.255.255.224): Usable Hosts (30), Wildcard & IPv4 Range

Instant /27 CIDR reference: Subnet Mask is 255.255.255.224, Wildcard 0.0.0.31, Total IPs 32, and 30 Usable Hosts. Ideal for Department VLAN & PoE IP Camera Segment (30 Hosts).

⚡ Instant Calculated Answer
/27 = Mask 255.255.255.224 • 30 Usable Hosts
⚡Open Full Interactive Calculator (subnet-calculator) →

📊Reference Table & Engineering Specs

Parameter / MetricSpecification Value
CIDR Prefix Notation/27
Dotted-Decimal Subnet Mask255.255.255.224
Wildcard Mask (OSPF / ACL)0.0.0.31
Total IPv4 Addresses (2^5)32 IP
Total Usable Hosts (2^5 - 2)30 Host
Sample Network ID192.168.1.0/27
Sample Usable Host Range192.168.1.1 – 192.168.1.30
Sample Broadcast Address192.168.1.31
Ideal Field Use CaseVLAN Divisi Kantor & Segmen Kamera CCTV IP PoE (30 Host)

📖Technical Explanation & Methodology

CIDR prefix /27 allocates 27 network bits and leaves 5 host bits (32 - 27 = 5). Using 2^5, each /27 block contains 32 total IPs and 30 usable host addresses (Department VLAN & PoE IP Camera Segment (30 Hosts)).

💻 Ready-to-Deploy CLI Snippet:
/ip address add address=192.168.1.1/27 interface=bridge-lan comment="Subnet /27 (30 Host) - KalkuNet.com"

❓Frequently Asked Questions (FAQ)

What is the Subnet Mask for /27?

The dotted-decimal Subnet Mask for /27 is 255.255.255.224 with a Wildcard Mask of 0.0.0.31.

How many usable hosts are in a /27 network?

A /27 subnet provides 32 total IPs and 30 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
/30 = Mask 255.255.255.252 • 2 Usable Hosts
/30 Subnet Mask (255.255.255.252): Usable Hosts (2), 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