IPRangeExplorer

192.88.99.0/24

Public

192.88.99.0/24 was formerly used as the anycast address for 6to4 relay routers (RFC 3068). This mechanism allowed IPv6 traffic to traverse IPv4 networks. RFC 7526 deprecated 6to4 in 2015, and this range is no longer used for that purpose, but may still appear in older network equipment and firewall rules.

Network Address
192.88.99.0
Broadcast Address
192.88.99.255
Subnet Mask
255.255.255.0
Usable Hosts
254
First Usable IP
192.88.99.1
Last Usable IP
192.88.99.254
Total IPs
256
Prefix Length
/24

Network address — the base address of the block (192.88.99.0). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 192.88.99.255 are delivered to every device in the subnet. Also reserved — not assignable.

Usable hosts — the 254 addresses between those two that you can assign to servers, VMs, or interfaces.

Subnet mask — 255.255.255.0 is the dotted-decimal equivalent of /24. Older tools and Cisco configs use this format instead of CIDR slash notation.

Full Details

CIDR Notation 192.88.99.0/24
Network Address 192.88.99.0
Broadcast Address 192.88.99.255
Subnet Mask 255.255.255.0
Wildcard Mask 0.0.0.255
Prefix Length /24
IP Address Class Class C
Total IP Addresses 256
Usable Host Addresses 254
First Usable IP 192.88.99.1
Last Usable IP 192.88.99.254
Network (Hex) 0xC0586300
Broadcast (Hex) 0xC05863FF
Address Type Public / Globally Routable

Binary Representation

Network Address
11000000.01011000.01100011 11000000.01011000.01100011.00000000
Subnet Mask
11111111.11111111.11111111.00000000

The first 24 bits (1s in the mask) identify the network. The remaining 8 bits identify hosts within the network.

Split into Equal Subnets

Split 192.88.99.0/24 into 2 equal /25 subnets (126 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 192.88.99.0/25 192.88.99.0 192.88.99.1 192.88.99.126 192.88.99.127 126
2 192.88.99.128/25 192.88.99.128 192.88.99.129 192.88.99.254 192.88.99.255 126

IP Address Sample

Showing first 16 of 256 total IPs.

192.88.99.0 net
192.88.99.1
192.88.99.2
192.88.99.3
192.88.99.4
192.88.99.5
192.88.99.6
192.88.99.7
192.88.99.8
192.88.99.9
192.88.99.10
192.88.99.11
192.88.99.12
192.88.99.13
192.88.99.14
192.88.99.15
… 240 more IPs …

Common Use Cases

  • → Legacy 6to4 relay configurations (now deprecated)
  • → Historical firewall rule auditing
  • → Identifying stale network rules referencing this range

/24 Subnet Reference

Total IPs 256
Usable Hosts 254
Subnet Mask 255.255.255.0
Wildcard 0.0.0.255
Full /24 reference →

Related Ranges

Parent /23 block 192.88.98.0/23 Sibling /24 block 192.88.98.0/24

Adjacent Prefix Sizes

/22 1,022 hosts /23 510 hosts /24 254 hosts /25 126 hosts /26 62 hosts

Calculate Another