151.148.4.252/30
PublicClass B — /30 prefix — 2 usable hosts
Network Address
151.148.4.252
Broadcast Address
151.148.4.255
Subnet Mask
255.255.255.252
Usable Hosts
2
First Usable IP
151.148.4.253
Last Usable IP
151.148.4.254
Total IPs
4
Prefix Length
Network address — the base address of the block (151.148.4.252). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 151.148.4.255 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 | 151.148.4.252/30 |
| Network Address | 151.148.4.252 |
| Broadcast Address | 151.148.4.255 |
| Subnet Mask | 255.255.255.252 |
| Wildcard Mask | 0.0.0.3 |
| Prefix Length | /30 |
| IP Address Class | Class B |
| Total IP Addresses | 4 |
| Usable Host Addresses | 2 |
| First Usable IP | 151.148.4.253 |
| Last Usable IP | 151.148.4.254 |
| Network (Hex) | 0x979404FC |
| Broadcast (Hex) | 0x979404FF |
| Address Type | Public / Globally Routable |
Binary Representation
Network Address
10010111.10010100.00000100
10010111.10010100.00000100.11111100
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
151.148.4.252
net
151.148.4.253
151.148.4.254
151.148.4.255
bcast
/30 Subnet Reference
Total IPs
4
Usable Hosts
2
Subnet Mask
255.255.255.252
Wildcard
0.0.0.3