21.252.247.0/26
PublicClass A — /26 prefix — 62 usable hosts
Network address — the base address of the block (21.252.247.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 21.252.247.63 are delivered to every device in the subnet. Also reserved — not assignable.
Usable hosts — the 62 addresses between those two that you can assign to servers, VMs, or interfaces.
Subnet mask — 255.255.255.192 is the dotted-decimal equivalent of /26. Older tools and Cisco configs use this format instead of CIDR slash notation.
Full Details
| CIDR Notation | 21.252.247.0/26 |
| Network Address | 21.252.247.0 |
| Broadcast Address | 21.252.247.63 |
| Subnet Mask | 255.255.255.192 |
| Wildcard Mask | 0.0.0.63 |
| Prefix Length | /26 |
| IP Address Class | Class A |
| Total IP Addresses | 64 |
| Usable Host Addresses | 62 |
| First Usable IP | 21.252.247.1 |
| Last Usable IP | 21.252.247.62 |
| Network (Hex) | 0x15FCF700 |
| Broadcast (Hex) | 0x15FCF73F |
| Address Type | Public / Globally Routable |
Binary Representation
The first 26 bits (1s in the mask) identify the network. The remaining 6 bits identify hosts within the network.
Split into Equal Subnets
Split 21.252.247.0/26 into 2 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 21.252.247.0/27 | 21.252.247.0 | 21.252.247.1 | 21.252.247.30 | 21.252.247.31 | 30 |
| 2 | 21.252.247.32/27 | 21.252.247.32 | 21.252.247.33 | 21.252.247.62 | 21.252.247.63 | 30 |
Split 21.252.247.0/26 into 4 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 21.252.247.0/28 | 21.252.247.0 | 21.252.247.1 | 21.252.247.14 | 21.252.247.15 | 14 |
| 2 | 21.252.247.16/28 | 21.252.247.16 | 21.252.247.17 | 21.252.247.30 | 21.252.247.31 | 14 |
| 3 | 21.252.247.32/28 | 21.252.247.32 | 21.252.247.33 | 21.252.247.46 | 21.252.247.47 | 14 |
| 4 | 21.252.247.48/28 | 21.252.247.48 | 21.252.247.49 | 21.252.247.62 | 21.252.247.63 | 14 |
Split 21.252.247.0/26 into 8 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 21.252.247.0/29 | 21.252.247.0 | 21.252.247.1 | 21.252.247.6 | 21.252.247.7 | 6 |
| 2 | 21.252.247.8/29 | 21.252.247.8 | 21.252.247.9 | 21.252.247.14 | 21.252.247.15 | 6 |
| 3 | 21.252.247.16/29 | 21.252.247.16 | 21.252.247.17 | 21.252.247.22 | 21.252.247.23 | 6 |
| 4 | 21.252.247.24/29 | 21.252.247.24 | 21.252.247.25 | 21.252.247.30 | 21.252.247.31 | 6 |
| 5 | 21.252.247.32/29 | 21.252.247.32 | 21.252.247.33 | 21.252.247.38 | 21.252.247.39 | 6 |
| 6 | 21.252.247.40/29 | 21.252.247.40 | 21.252.247.41 | 21.252.247.46 | 21.252.247.47 | 6 |
| 7 | 21.252.247.48/29 | 21.252.247.48 | 21.252.247.49 | 21.252.247.54 | 21.252.247.55 | 6 |
| 8 | 21.252.247.56/29 | 21.252.247.56 | 21.252.247.57 | 21.252.247.62 | 21.252.247.63 | 6 |
Split 21.252.247.0/26 into 16 equal /30 subnets (2 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 21.252.247.0/30 | 21.252.247.0 | 21.252.247.1 | 21.252.247.2 | 21.252.247.3 | 2 |
| 2 | 21.252.247.4/30 | 21.252.247.4 | 21.252.247.5 | 21.252.247.6 | 21.252.247.7 | 2 |
| 3 | 21.252.247.8/30 | 21.252.247.8 | 21.252.247.9 | 21.252.247.10 | 21.252.247.11 | 2 |
| 4 | 21.252.247.12/30 | 21.252.247.12 | 21.252.247.13 | 21.252.247.14 | 21.252.247.15 | 2 |
| 5 | 21.252.247.16/30 | 21.252.247.16 | 21.252.247.17 | 21.252.247.18 | 21.252.247.19 | 2 |
| 6 | 21.252.247.20/30 | 21.252.247.20 | 21.252.247.21 | 21.252.247.22 | 21.252.247.23 | 2 |
| 7 | 21.252.247.24/30 | 21.252.247.24 | 21.252.247.25 | 21.252.247.26 | 21.252.247.27 | 2 |
| 8 | 21.252.247.28/30 | 21.252.247.28 | 21.252.247.29 | 21.252.247.30 | 21.252.247.31 | 2 |
| 9 | 21.252.247.32/30 | 21.252.247.32 | 21.252.247.33 | 21.252.247.34 | 21.252.247.35 | 2 |
| 10 | 21.252.247.36/30 | 21.252.247.36 | 21.252.247.37 | 21.252.247.38 | 21.252.247.39 | 2 |
| 11 | 21.252.247.40/30 | 21.252.247.40 | 21.252.247.41 | 21.252.247.42 | 21.252.247.43 | 2 |
| 12 | 21.252.247.44/30 | 21.252.247.44 | 21.252.247.45 | 21.252.247.46 | 21.252.247.47 | 2 |
| 13 | 21.252.247.48/30 | 21.252.247.48 | 21.252.247.49 | 21.252.247.50 | 21.252.247.51 | 2 |
| 14 | 21.252.247.52/30 | 21.252.247.52 | 21.252.247.53 | 21.252.247.54 | 21.252.247.55 | 2 |
| 15 | 21.252.247.56/30 | 21.252.247.56 | 21.252.247.57 | 21.252.247.58 | 21.252.247.59 | 2 |
| 16 | 21.252.247.60/30 | 21.252.247.60 | 21.252.247.61 | 21.252.247.62 | 21.252.247.63 | 2 |
IP Address Sample
Showing first 16 of 64 total IPs.