A /29 has eight addresses and six usable hosts, mask 255.255.255.248. Business internet plans often come with a /29 of static public IPs. One usable address goes to the ISP’s gateway, which leaves five for your own devices. Blocks start every 8 addresses, so the network address always ends in a multiple of 8, such as .0, .8 or .248.
Facts
- Prefix
- /29
- Subnet mask
- 255.255.255.248
- Wildcard mask
- 0.0.0.7
- Binary mask
- 11111111.11111111.11111111.11111000
- Total addresses
- 8
- Usable hosts
- 6
- Example range
- 192.168.1.0/29: 192.168.1.0 – 192.168.1.7
- Typical use
- Tiny segments, such as a block of static public IPs from an ISP.
Try it
Try: , ,
- CIDR block
- 192.168.1.0/29
- IP range
- 192.168.1.0 – 192.168.1.7
- Addresses
- 8
- Usable hosts
- 6
- Subnet mask
- 255.255.255.248
- Wildcard mask
- 0.0.0.7
Frequently asked questions
How many hosts are in a /29?
A /29 has 8 addresses. Subtracting the network and broadcast addresses leaves 6 usable hosts.
What is the subnet mask for /29?
/29 is 255.255.255.248 (wildcard mask 0.0.0.7). In binary that’s 29 ones followed by 3 zeros.