IPRangeExplorer

128.177.0.0/19

Public

Class B — /19 prefix — 8,190 usable hosts

Network Address
128.177.0.0
Broadcast Address
128.177.31.255
Subnet Mask
255.255.224.0
Usable Hosts
8,190
First Usable IP
128.177.0.1
Last Usable IP
128.177.31.254
Total IPs
8,192
Prefix Length
/19

Network address — the base address of the block (128.177.0.0). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 128.177.31.255 are delivered to every device in the subnet. Also reserved — not assignable.

Usable hosts — the 8,190 addresses between those two that you can assign to servers, VMs, or interfaces.

Subnet mask — 255.255.224.0 is the dotted-decimal equivalent of /19. Older tools and Cisco configs use this format instead of CIDR slash notation.

Full Details

CIDR Notation 128.177.0.0/19
Network Address 128.177.0.0
Broadcast Address 128.177.31.255
Subnet Mask 255.255.224.0
Wildcard Mask 0.0.31.255
Prefix Length /19
IP Address Class Class B
Total IP Addresses 8,192
Usable Host Addresses 8,190
First Usable IP 128.177.0.1
Last Usable IP 128.177.31.254
Network (Hex) 0x80B10000
Broadcast (Hex) 0x80B11FFF
Address Type Public / Globally Routable

Binary Representation

Network Address
10000000.10110001 10000000.10110001.00000000.00000000
Subnet Mask
11111111.11111111.11100000.00000000

The first 19 bits (1s in the mask) identify the network. The remaining 13 bits identify hosts within the network.

Split into Equal Subnets

Split 128.177.0.0/19 into 2 equal /20 subnets (4,094 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 128.177.0.0/20 128.177.0.0 128.177.0.1 128.177.15.254 128.177.15.255 4,094
2 128.177.16.0/20 128.177.16.0 128.177.16.1 128.177.31.254 128.177.31.255 4,094

/19 Subnet Reference

Total IPs 8,192
Usable Hosts 8,190
Subnet Mask 255.255.224.0
Wildcard 0.0.31.255
Full /19 reference →

Related Ranges

Parent /18 block 128.177.0.0/18 Sibling /19 block 128.177.32.0/19

Adjacent Prefix Sizes

/17 32,766 hosts /18 16,382 hosts /19 8,190 hosts /20 4,094 hosts /21 2,046 hosts

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