IPv4 reference
IPv4 /29 prefix
IPv4 /29 prefix corresponds to /29, with 8 total addresses and 6 usable hosts.
Example network details for 0.0.0.0/29
- CIDR
- 0.0.0.0/29
- Prefix
- /29
- Network address
- 0.0.0.0
- Broadcast address
- 0.0.0.7
- First usable address
- 0.0.0.1
- Last usable address
- 0.0.0.6
- Subnet mask
- 255.255.255.248
- Wildcard mask
- 0.0.0.7
- Total addresses
- 8
- Usable hosts
- 6
Binary masks
Subnet: 11111111.11111111.11111111.11111000
Wildcard: 00000000.00000000.00000000.00000111
The first 29 bits identify the network. The remaining 3 bits identify addresses inside it.
First subdivision
Dividing this network into 4 equal blocks produces:
0.0.0.0/31— 2 usable hosts0.0.0.2/31— 2 usable hosts0.0.0.4/31— 2 usable hosts0.0.0.6/31— 2 usable hosts
Continue working with /29
What this result means
A /29 IPv4 network contains 8 consecutive addresses. The network and broadcast addresses are reserved in traditional LAN use, leaving 6 usable host addresses.
Use the wildcard mask in access lists and routing policy where a device expects inverse mask bits. Always verify vendor syntax before applying generated values to production equipment.