Yurlie/3 Subnet Mask Reference
The subnet mask for prefix length /3 is 224.0.0.0. A massive IPv4 subnet with 536.870.912 total addresses and 536.870.910 usable host addresses.
/3224.0.0.031.255.255.255E0000000536.870.9103 / 32Binary Representation
11100000.00000000.00000000.0000000000011111.11111111.11111111.111111111-bits (network): 3 · 0-bits (host): 29 · Total: 32 bits
Common Uses for 224.0.0.0
- Large network segment
- ISP/enterprise allocation
Frequently Asked Questions
What is the subnet mask for /3?
The subnet mask for prefix length /3 is 224.0.0.0. In hexadecimal it is 0xE0000000. The binary representation is 11100000.00000000.00000000.00000000.
What is the inverse (wildcard) mask of 224.0.0.0?
The wildcard mask (inverse mask) of 224.0.0.0 is 31.255.255.255. Wildcard masks are used in Cisco IOS ACLs and OSPF configurations to specify which bits of an IP address to match.
How many host IPs does 224.0.0.0 give?
With subnet mask 224.0.0.0 (/3), you get 536.870.912 total IPs, minus 2 reserved (network + broadcast) = 536.870.910 usable host addresses.
What CIDR prefix corresponds to 224.0.0.0?
The subnet mask 224.0.0.0 corresponds to CIDR prefix /3. This means 3 bits are used for the network portion and 29 bits for host addresses.
Complete Subnet Mask Reference /0–/32
| Prefix | Subnet Mask | Wildcard | Hex | Usable Hosts |
|---|---|---|---|---|
| /0 | 0.0.0.0 | 255.255.255.255 | 00000000 | 4.294.967.294 |
| /1 | 128.0.0.0 | 127.255.255.255 | 80000000 | 2.147.483.646 |
| /2 | 192.0.0.0 | 63.255.255.255 | C0000000 | 1.073.741.822 |
| /3 | 224.0.0.0 | 31.255.255.255 | E0000000 | 536.870.910 |
| /4 | 240.0.0.0 | 15.255.255.255 | F0000000 | 268.435.454 |
| /5 | 248.0.0.0 | 7.255.255.255 | F8000000 | 134.217.726 |
| /6 | 252.0.0.0 | 3.255.255.255 | FC000000 | 67.108.862 |
| /7 | 254.0.0.0 | 1.255.255.255 | FE000000 | 33.554.430 |
| /8 | 255.0.0.0 | 0.255.255.255 | FF000000 | 16.777.214 |
| /9 | 255.128.0.0 | 0.127.255.255 | FF800000 | 8.388.606 |
| /10 | 255.192.0.0 | 0.63.255.255 | FFC00000 | 4.194.302 |
| /11 | 255.224.0.0 | 0.31.255.255 | FFE00000 | 2.097.150 |
| /12 | 255.240.0.0 | 0.15.255.255 | FFF00000 | 1.048.574 |
| /13 | 255.248.0.0 | 0.7.255.255 | FFF80000 | 524.286 |
| /14 | 255.252.0.0 | 0.3.255.255 | FFFC0000 | 262.142 |
| /15 | 255.254.0.0 | 0.1.255.255 | FFFE0000 | 131.070 |
| /16 | 255.255.0.0 | 0.0.255.255 | FFFF0000 | 65.534 |
| /17 | 255.255.128.0 | 0.0.127.255 | FFFF8000 | 32.766 |
| /18 | 255.255.192.0 | 0.0.63.255 | FFFFC000 | 16.382 |
| /19 | 255.255.224.0 | 0.0.31.255 | FFFFE000 | 8.190 |
| /20 | 255.255.240.0 | 0.0.15.255 | FFFFF000 | 4.094 |
| /21 | 255.255.248.0 | 0.0.7.255 | FFFFF800 | 2.046 |
| /22 | 255.255.252.0 | 0.0.3.255 | FFFFFC00 | 1.022 |
| /23 | 255.255.254.0 | 0.0.1.255 | FFFFFE00 | 510 |
| /24 | 255.255.255.0 | 0.0.0.255 | FFFFFF00 | 254 |
| /25 | 255.255.255.128 | 0.0.0.127 | FFFFFF80 | 126 |
| /26 | 255.255.255.192 | 0.0.0.63 | FFFFFFC0 | 62 |
| /27 | 255.255.255.224 | 0.0.0.31 | FFFFFFE0 | 30 |
| /28 | 255.255.255.240 | 0.0.0.15 | FFFFFFF0 | 14 |
| /29 | 255.255.255.248 | 0.0.0.7 | FFFFFFF8 | 6 |
| /30 | 255.255.255.252 | 0.0.0.3 | FFFFFFFC | 2 |
| /31 | 255.255.255.254 | 0.0.0.1 | FFFFFFFE | 2 |
| /32 | 255.255.255.255 | 0.0.0.0 | FFFFFFFF | 1 |