IPRangeExplorer

127.200.120.0/22

Loopback RFC 5735

Class A — /22 prefix — 1,022 usable hosts

Network Address
127.200.120.0
Broadcast Address
127.200.123.255
Subnet Mask
255.255.252.0
Usable Hosts
1,022
First Usable IP
127.200.120.1
Last Usable IP
127.200.123.254
Total IPs
1,024
Prefix Length
/22

Network address — the base address of the block (127.200.120.0). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 127.200.123.255 are delivered to every device in the subnet. Also reserved — not assignable.

Usable hosts — the 1,022 addresses between those two that you can assign to servers, VMs, or interfaces.

Subnet mask — 255.255.252.0 is the dotted-decimal equivalent of /22. Older tools and Cisco configs use this format instead of CIDR slash notation.

Full Details

CIDR Notation 127.200.120.0/22
Network Address 127.200.120.0
Broadcast Address 127.200.123.255
Subnet Mask 255.255.252.0
Wildcard Mask 0.0.3.255
Prefix Length /22
IP Address Class Class A
Total IP Addresses 1,024
Usable Host Addresses 1,022
First Usable IP 127.200.120.1
Last Usable IP 127.200.123.254
Network (Hex) 0x7FC87800
Broadcast (Hex) 0x7FC87BFF
Governing RFC RFC 5735
Address Type Loopback

Binary Representation

Network Address
01111111.11001000 01111111.11001000.01111000.00000000
Subnet Mask
11111111.11111111.11111100.00000000

The first 22 bits (1s in the mask) identify the network. The remaining 10 bits identify hosts within the network.

Split into Equal Subnets

Split 127.200.120.0/22 into 2 equal /23 subnets (510 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 127.200.120.0/23 127.200.120.0 127.200.120.1 127.200.121.254 127.200.121.255 510
2 127.200.122.0/23 127.200.122.0 127.200.122.1 127.200.123.254 127.200.123.255 510

/22 Subnet Reference

Total IPs 1,024
Usable Hosts 1,022
Subnet Mask 255.255.252.0
Wildcard 0.0.3.255
Full /22 reference →

Related Ranges

Parent /21 block 127.200.120.0/21 Sibling /22 block 127.200.124.0/22

Adjacent Prefix Sizes

/20 4,094 hosts /21 2,046 hosts /22 1,022 hosts /23 510 hosts /24 254 hosts

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