● network/20 = Mask 255.255.240.0 • 4,094 Usable Hosts
/20 Subnet Mask (255.255.240.0): Usable Hosts (4,094), Wildcard & IPv4 Range
Instant /20 CIDR reference: Subnet Mask is 255.255.240.0, Wildcard 0.0.15.255, Total IPs 4,096, and 4,094 Usable Hosts. Ideal for Large Enterprise & Data Center Fabric (4,094 Hosts).
⚡ Instant Calculated Answer
⚡Open Full Interactive Calculator (subnet-calculator) →/20 = Mask 255.255.240.0 • 4,094 Usable Hosts
📊Reference Table & Engineering Specs
| Parameter / Metric | Specification Value |
|---|---|
| CIDR Prefix Notation | /20 |
| Dotted-Decimal Subnet Mask | 255.255.240.0 |
| Wildcard Mask (OSPF / ACL) | 0.0.15.255 |
| Total IPv4 Addresses (2^12) | 4,096 IP |
| Total Usable Hosts (2^12 - 2) | 4,094 Host |
| Sample Network ID | 10.10.0.0/20 |
| Sample Usable Host Range | 10.10.0.1 – 10.10.15.254 |
| Sample Broadcast Address | 10.10.15.255 |
| Ideal Field Use Case | Jaringan Enterprise Korporat & Data Center (4.094 Host) |
📖Technical Explanation & Methodology
CIDR prefix /20 allocates 20 network bits and leaves 12 host bits (32 - 20 = 12). Using 2^12, each /20 block contains 4,096 total IPs and 4,094 usable host addresses (Large Enterprise & Data Center Fabric (4,094 Hosts)).
💻 Ready-to-Deploy CLI Snippet:
/ip address add address=10.10.0.1/20 interface=bridge-lan comment="Subnet /20 (4094 Host) - KalkuNet.com"❓Frequently Asked Questions (FAQ)
What is the Subnet Mask for /20?
The dotted-decimal Subnet Mask for /20 is 255.255.240.0 with a Wildcard Mask of 0.0.15.255.
How many usable hosts are in a /20 network?
A /20 subnet provides 4,096 total IPs and 4,094 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