11.58.17.64/27

Public

Class A — /27 prefix — 30 usable hosts

Network Address
11.58.17.64
Broadcast Address
11.58.17.95
Subnet Mask
255.255.255.224
Usable Hosts
30
First Usable IP
11.58.17.65
Last Usable IP
11.58.17.94
Total IPs
32
Prefix Length
/27

Network address — the base address of the block (11.58.17.64). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 11.58.17.95 are delivered to every device in the subnet. Also reserved — not assignable.

Usable hosts — the 30 addresses between those two that you can assign to servers, VMs, or interfaces.

Subnet mask255.255.255.224 is the dotted-decimal equivalent of /27. Older tools and Cisco configs use this format instead of CIDR slash notation.

Full Details

CIDR Notation 11.58.17.64/27
Network Address 11.58.17.64
Broadcast Address 11.58.17.95
Subnet Mask 255.255.255.224
Wildcard Mask 0.0.0.31
Prefix Length /27
IP Address Class Class A
Total IP Addresses 32
Usable Host Addresses 30
First Usable IP 11.58.17.65
Last Usable IP 11.58.17.94
Network (Hex) 0x0B3A1140
Broadcast (Hex) 0x0B3A115F
Address Type Public / Globally Routable

Binary Representation

Network Address
00001011.00111010.00010001 00001011.00111010.00010001.01000000
Subnet Mask
11111111.11111111.11111111.11100000

The first 27 bits (1s in the mask) identify the network. The remaining 5 bits identify hosts within the network.

Split into Equal Subnets

Split 11.58.17.64/27 into 2 equal /28 subnets (14 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 11.58.17.64/28 11.58.17.64 11.58.17.65 11.58.17.78 11.58.17.79 14
2 11.58.17.80/28 11.58.17.80 11.58.17.81 11.58.17.94 11.58.17.95 14

IP Address Sample

Showing first 16 of 32 total IPs.

11.58.17.64 net
11.58.17.65
11.58.17.66
11.58.17.67
11.58.17.68
11.58.17.69
11.58.17.70
11.58.17.71
11.58.17.72
11.58.17.73
11.58.17.74
11.58.17.75
11.58.17.76
11.58.17.77
11.58.17.78
11.58.17.79
… 16 more IPs …

/27 Subnet Reference

Total IPs 32
Usable Hosts 30
Subnet Mask 255.255.255.224
Wildcard 0.0.0.31

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