222.151.74.168/30
PublicClass C — /30 prefix — 2 usable hosts
Network Address
222.151.74.168
Broadcast Address
222.151.74.171
Subnet Mask
255.255.255.252
Usable Hosts
2
First Usable IP
222.151.74.169
Last Usable IP
222.151.74.170
Total IPs
4
Prefix Length
Network address — the base address of the block (222.151.74.168). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 222.151.74.171 are delivered to every device in the subnet. Also reserved — not assignable.
Usable hosts — the 2 addresses between those two that you can assign to servers, VMs, or interfaces.
Subnet mask — 255.255.255.252 is the dotted-decimal equivalent of /30. Older tools and Cisco configs use this format instead of CIDR slash notation.
Full Details
| CIDR Notation | 222.151.74.168/30 |
| Network Address | 222.151.74.168 |
| Broadcast Address | 222.151.74.171 |
| Subnet Mask | 255.255.255.252 |
| Wildcard Mask | 0.0.0.3 |
| Prefix Length | /30 |
| IP Address Class | Class C |
| Total IP Addresses | 4 |
| Usable Host Addresses | 2 |
| First Usable IP | 222.151.74.169 |
| Last Usable IP | 222.151.74.170 |
| Network (Hex) | 0xDE974AA8 |
| Broadcast (Hex) | 0xDE974AAB |
| Address Type | Public / Globally Routable |
Binary Representation
Network Address
11011110.10010111.01001010
11011110.10010111.01001010.10101000
Subnet Mask
11111111.11111111.11111111.11111100
The first 30 bits (1s in the mask) identify the network. The remaining 2 bits identify hosts within the network.
All 4 IP Addresses in this Range
222.151.74.168
net
222.151.74.169
222.151.74.170
222.151.74.171
bcast
/30 Subnet Reference
Total IPs
4
Usable Hosts
2
Subnet Mask
255.255.255.252
Wildcard
0.0.0.3