243.9.247.0/25
PublicClass E (Reserved) — /25 prefix — 126 usable hosts
Network address — the base address of the block (243.9.247.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 243.9.247.127 are delivered to every device in the subnet. Also reserved — not assignable.
Usable hosts — the 126 addresses between those two that you can assign to servers, VMs, or interfaces.
Subnet mask — 255.255.255.128 is the dotted-decimal equivalent of /25. Older tools and Cisco configs use this format instead of CIDR slash notation.
Full Details
| CIDR Notation | 243.9.247.0/25 |
| Network Address | 243.9.247.0 |
| Broadcast Address | 243.9.247.127 |
| Subnet Mask | 255.255.255.128 |
| Wildcard Mask | 0.0.0.127 |
| Prefix Length | /25 |
| IP Address Class | Class E (Reserved) |
| Total IP Addresses | 128 |
| Usable Host Addresses | 126 |
| First Usable IP | 243.9.247.1 |
| Last Usable IP | 243.9.247.126 |
| Network (Hex) | 0xF309F700 |
| Broadcast (Hex) | 0xF309F77F |
| Address Type | Public / Globally Routable |
Binary Representation
The first 25 bits (1s in the mask) identify the network. The remaining 7 bits identify hosts within the network.
Split into Equal Subnets
Split 243.9.247.0/25 into 2 equal /26 subnets (62 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 243.9.247.0/26 | 243.9.247.0 | 243.9.247.1 | 243.9.247.62 | 243.9.247.63 | 62 |
| 2 | 243.9.247.64/26 | 243.9.247.64 | 243.9.247.65 | 243.9.247.126 | 243.9.247.127 | 62 |
Split 243.9.247.0/25 into 4 equal /27 subnets (30 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 243.9.247.0/27 | 243.9.247.0 | 243.9.247.1 | 243.9.247.30 | 243.9.247.31 | 30 |
| 2 | 243.9.247.32/27 | 243.9.247.32 | 243.9.247.33 | 243.9.247.62 | 243.9.247.63 | 30 |
| 3 | 243.9.247.64/27 | 243.9.247.64 | 243.9.247.65 | 243.9.247.94 | 243.9.247.95 | 30 |
| 4 | 243.9.247.96/27 | 243.9.247.96 | 243.9.247.97 | 243.9.247.126 | 243.9.247.127 | 30 |
Split 243.9.247.0/25 into 8 equal /28 subnets (14 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 243.9.247.0/28 | 243.9.247.0 | 243.9.247.1 | 243.9.247.14 | 243.9.247.15 | 14 |
| 2 | 243.9.247.16/28 | 243.9.247.16 | 243.9.247.17 | 243.9.247.30 | 243.9.247.31 | 14 |
| 3 | 243.9.247.32/28 | 243.9.247.32 | 243.9.247.33 | 243.9.247.46 | 243.9.247.47 | 14 |
| 4 | 243.9.247.48/28 | 243.9.247.48 | 243.9.247.49 | 243.9.247.62 | 243.9.247.63 | 14 |
| 5 | 243.9.247.64/28 | 243.9.247.64 | 243.9.247.65 | 243.9.247.78 | 243.9.247.79 | 14 |
| 6 | 243.9.247.80/28 | 243.9.247.80 | 243.9.247.81 | 243.9.247.94 | 243.9.247.95 | 14 |
| 7 | 243.9.247.96/28 | 243.9.247.96 | 243.9.247.97 | 243.9.247.110 | 243.9.247.111 | 14 |
| 8 | 243.9.247.112/28 | 243.9.247.112 | 243.9.247.113 | 243.9.247.126 | 243.9.247.127 | 14 |
Split 243.9.247.0/25 into 16 equal /29 subnets (6 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 243.9.247.0/29 | 243.9.247.0 | 243.9.247.1 | 243.9.247.6 | 243.9.247.7 | 6 |
| 2 | 243.9.247.8/29 | 243.9.247.8 | 243.9.247.9 | 243.9.247.14 | 243.9.247.15 | 6 |
| 3 | 243.9.247.16/29 | 243.9.247.16 | 243.9.247.17 | 243.9.247.22 | 243.9.247.23 | 6 |
| 4 | 243.9.247.24/29 | 243.9.247.24 | 243.9.247.25 | 243.9.247.30 | 243.9.247.31 | 6 |
| 5 | 243.9.247.32/29 | 243.9.247.32 | 243.9.247.33 | 243.9.247.38 | 243.9.247.39 | 6 |
| 6 | 243.9.247.40/29 | 243.9.247.40 | 243.9.247.41 | 243.9.247.46 | 243.9.247.47 | 6 |
| 7 | 243.9.247.48/29 | 243.9.247.48 | 243.9.247.49 | 243.9.247.54 | 243.9.247.55 | 6 |
| 8 | 243.9.247.56/29 | 243.9.247.56 | 243.9.247.57 | 243.9.247.62 | 243.9.247.63 | 6 |
| 9 | 243.9.247.64/29 | 243.9.247.64 | 243.9.247.65 | 243.9.247.70 | 243.9.247.71 | 6 |
| 10 | 243.9.247.72/29 | 243.9.247.72 | 243.9.247.73 | 243.9.247.78 | 243.9.247.79 | 6 |
| 11 | 243.9.247.80/29 | 243.9.247.80 | 243.9.247.81 | 243.9.247.86 | 243.9.247.87 | 6 |
| 12 | 243.9.247.88/29 | 243.9.247.88 | 243.9.247.89 | 243.9.247.94 | 243.9.247.95 | 6 |
| 13 | 243.9.247.96/29 | 243.9.247.96 | 243.9.247.97 | 243.9.247.102 | 243.9.247.103 | 6 |
| 14 | 243.9.247.104/29 | 243.9.247.104 | 243.9.247.105 | 243.9.247.110 | 243.9.247.111 | 6 |
| 15 | 243.9.247.112/29 | 243.9.247.112 | 243.9.247.113 | 243.9.247.118 | 243.9.247.119 | 6 |
| 16 | 243.9.247.120/29 | 243.9.247.120 | 243.9.247.121 | 243.9.247.126 | 243.9.247.127 | 6 |
IP Address Sample
Showing first 16 of 128 total IPs.