130.176.77.20/30
PublicClass B — /30 prefix — 2 usable hosts
Network Address
130.176.77.20
Broadcast Address
130.176.77.23
Subnet Mask
255.255.255.252
Usable Hosts
2
First Usable IP
130.176.77.21
Last Usable IP
130.176.77.22
Total IPs
4
Prefix Length
Network address — the base address of the block (130.176.77.20). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 130.176.77.23 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 | 130.176.77.20/30 |
| Network Address | 130.176.77.20 |
| Broadcast Address | 130.176.77.23 |
| 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 | 130.176.77.21 |
| Last Usable IP | 130.176.77.22 |
| Network (Hex) | 0x82B04D14 |
| Broadcast (Hex) | 0x82B04D17 |
| Address Type | Public / Globally Routable |
Binary Representation
Network Address
10000010.10110000.01001101
10000010.10110000.01001101.00010100
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
130.176.77.20
net
130.176.77.21
130.176.77.22
130.176.77.23
bcast
/30 Subnet Reference
Total IPs
4
Usable Hosts
2
Subnet Mask
255.255.255.252
Wildcard
0.0.0.3