More detailsNeighboring subnets, wildcard mask, hex, reverse DNS, and binary breakdown
Neighboring /29 subnets
- Wildcard mask
- Used in Cisco ACLs and OSPF
- CIDR notation
- IP in hexadecimal
- IP as 32-bit integer
- Reverse DNS (PTR)
- Host bits / subnet bits
Binary breakdown
IP address
11000000.10101000.00000001.00000000Subnet mask
11111111.11111111.11111111.11111000Network
11000000.10101000.00000001.00000000Broadcast
11000000.10101000.00000001.00000111Quick facts for /29
- Subnet mask: 255.255.255.248
- Wildcard: 0.0.0.7
- Usable hosts: 6
- Total addresses: 8
/29 reference guideBit split, overview, sizing tables, notable networks, and FAQ
Binary bit split
11111111·11111111·11111111·11111000
Network bits (29)Host bits (3)
- Network bits
- 29
- Host bits
- 3
- Subnet mask
- 255.255.255.248
- Wildcard mask
- 0.0.0.7
- Total addresses
- 8
- Usable hosts
- 6
- Hosts formula
- 2^3 − 2
- /24 relationship
- 32 fit per /24
Overview
A /29 block contains 8 addresses with 6 usable. It is the smallest subnet that can hold more than 2 hosts and is widely used for server clusters, transit links, and small cloud subnets.
Common use cases
- Small server farm or cluster (up to 6 hosts)
- Transit link between routers
- Cloud database or cache subnet
- ISP customer allocation for small offices
Subnet sizing reference
Notable /29 networks
192.168.1.0/29.0–.7 (6 usable hosts)10.0.0.0/29Common server cluster block
Frequently asked questions
Common questions about /29 networks, subnet masks, and use cases.