IPRangeExplorer

210.0.0.0/11

Public

Class C — /11 prefix — 2,097,150 usable hosts

Network Address
210.0.0.0
Broadcast Address
210.31.255.255
Subnet Mask
255.224.0.0
Usable Hosts
2,097,150
First Usable IP
210.0.0.1
Last Usable IP
210.31.255.254
Total IPs
2,097,152
Prefix Length
/11

Network address — the base address of the block (210.0.0.0). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 210.31.255.255 are delivered to every device in the subnet. Also reserved — not assignable.

Usable hosts — the 2,097,150 addresses between those two that you can assign to servers, VMs, or interfaces.

Subnet mask — 255.224.0.0 is the dotted-decimal equivalent of /11. Older tools and Cisco configs use this format instead of CIDR slash notation.

Full Details

CIDR Notation 210.0.0.0/11
Network Address 210.0.0.0
Broadcast Address 210.31.255.255
Subnet Mask 255.224.0.0
Wildcard Mask 0.31.255.255
Prefix Length /11
IP Address Class Class C
Total IP Addresses 2,097,152
Usable Host Addresses 2,097,150
First Usable IP 210.0.0.1
Last Usable IP 210.31.255.254
Network (Hex) 0xD2000000
Broadcast (Hex) 0xD21FFFFF
Address Type Public / Globally Routable

Binary Representation

Network Address
11010010 11010010.00000000.00000000.00000000
Subnet Mask
11111111.11100000.00000000.00000000

The first 11 bits (1s in the mask) identify the network. The remaining 21 bits identify hosts within the network.

Split into Equal Subnets

Split 210.0.0.0/11 into 2 equal /12 subnets (1,048,574 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 210.0.0.0/12 210.0.0.0 210.0.0.1 210.15.255.254 210.15.255.255 1,048,574
2 210.16.0.0/12 210.16.0.0 210.16.0.1 210.31.255.254 210.31.255.255 1,048,574

/11 Subnet Reference

Total IPs 2,097,152
Usable Hosts 2,097,150
Subnet Mask 255.224.0.0
Wildcard 0.31.255.255
Full /11 reference →

Related Ranges

Parent /10 block 210.0.0.0/10 Sibling /11 block 210.32.0.0/11

Adjacent Prefix Sizes

/9 8,388,606 hosts /10 4,194,302 hosts /11 2,097,150 hosts /12 1,048,574 hosts /13 524,286 hosts

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