35.190.208.0/21
PublicClass A — /21 prefix — 2,046 usable hosts
Network address — the base address of the block (35.190.208.0). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 35.190.215.255 are delivered to every device in the subnet. Also reserved — not assignable.
Usable hosts — the 2,046 addresses between those two that you can assign to servers, VMs, or interfaces.
Subnet mask — 255.255.248.0 is the dotted-decimal equivalent of /21. Older tools and Cisco configs use this format instead of CIDR slash notation.
Full Details
| CIDR Notation | 35.190.208.0/21 |
| Network Address | 35.190.208.0 |
| Broadcast Address | 35.190.215.255 |
| Subnet Mask | 255.255.248.0 |
| Wildcard Mask | 0.0.7.255 |
| Prefix Length | /21 |
| IP Address Class | Class A |
| Total IP Addresses | 2,048 |
| Usable Host Addresses | 2,046 |
| First Usable IP | 35.190.208.1 |
| Last Usable IP | 35.190.215.254 |
| Network (Hex) | 0x23BED000 |
| Broadcast (Hex) | 0x23BED7FF |
| Address Type | Public / Globally Routable |
Binary Representation
The first 21 bits (1s in the mask) identify the network. The remaining 11 bits identify hosts within the network.
Split into Equal Subnets
Split 35.190.208.0/21 into 2 equal /22 subnets (1,022 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 35.190.208.0/22 | 35.190.208.0 | 35.190.208.1 | 35.190.211.254 | 35.190.211.255 | 1,022 |
| 2 | 35.190.212.0/22 | 35.190.212.0 | 35.190.212.1 | 35.190.215.254 | 35.190.215.255 | 1,022 |
Split 35.190.208.0/21 into 4 equal /23 subnets (510 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 35.190.208.0/23 | 35.190.208.0 | 35.190.208.1 | 35.190.209.254 | 35.190.209.255 | 510 |
| 2 | 35.190.210.0/23 | 35.190.210.0 | 35.190.210.1 | 35.190.211.254 | 35.190.211.255 | 510 |
| 3 | 35.190.212.0/23 | 35.190.212.0 | 35.190.212.1 | 35.190.213.254 | 35.190.213.255 | 510 |
| 4 | 35.190.214.0/23 | 35.190.214.0 | 35.190.214.1 | 35.190.215.254 | 35.190.215.255 | 510 |
Split 35.190.208.0/21 into 8 equal /24 subnets (254 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 35.190.208.0/24 | 35.190.208.0 | 35.190.208.1 | 35.190.208.254 | 35.190.208.255 | 254 |
| 2 | 35.190.209.0/24 | 35.190.209.0 | 35.190.209.1 | 35.190.209.254 | 35.190.209.255 | 254 |
| 3 | 35.190.210.0/24 | 35.190.210.0 | 35.190.210.1 | 35.190.210.254 | 35.190.210.255 | 254 |
| 4 | 35.190.211.0/24 | 35.190.211.0 | 35.190.211.1 | 35.190.211.254 | 35.190.211.255 | 254 |
| 5 | 35.190.212.0/24 | 35.190.212.0 | 35.190.212.1 | 35.190.212.254 | 35.190.212.255 | 254 |
| 6 | 35.190.213.0/24 | 35.190.213.0 | 35.190.213.1 | 35.190.213.254 | 35.190.213.255 | 254 |
| 7 | 35.190.214.0/24 | 35.190.214.0 | 35.190.214.1 | 35.190.214.254 | 35.190.214.255 | 254 |
| 8 | 35.190.215.0/24 | 35.190.215.0 | 35.190.215.1 | 35.190.215.254 | 35.190.215.255 | 254 |
Split 35.190.208.0/21 into 16 equal /25 subnets (126 usable hosts each).
| # | CIDR | Network | First Usable | Last Usable | Broadcast | Hosts |
|---|---|---|---|---|---|---|
| 1 | 35.190.208.0/25 | 35.190.208.0 | 35.190.208.1 | 35.190.208.126 | 35.190.208.127 | 126 |
| 2 | 35.190.208.128/25 | 35.190.208.128 | 35.190.208.129 | 35.190.208.254 | 35.190.208.255 | 126 |
| 3 | 35.190.209.0/25 | 35.190.209.0 | 35.190.209.1 | 35.190.209.126 | 35.190.209.127 | 126 |
| 4 | 35.190.209.128/25 | 35.190.209.128 | 35.190.209.129 | 35.190.209.254 | 35.190.209.255 | 126 |
| 5 | 35.190.210.0/25 | 35.190.210.0 | 35.190.210.1 | 35.190.210.126 | 35.190.210.127 | 126 |
| 6 | 35.190.210.128/25 | 35.190.210.128 | 35.190.210.129 | 35.190.210.254 | 35.190.210.255 | 126 |
| 7 | 35.190.211.0/25 | 35.190.211.0 | 35.190.211.1 | 35.190.211.126 | 35.190.211.127 | 126 |
| 8 | 35.190.211.128/25 | 35.190.211.128 | 35.190.211.129 | 35.190.211.254 | 35.190.211.255 | 126 |
| 9 | 35.190.212.0/25 | 35.190.212.0 | 35.190.212.1 | 35.190.212.126 | 35.190.212.127 | 126 |
| 10 | 35.190.212.128/25 | 35.190.212.128 | 35.190.212.129 | 35.190.212.254 | 35.190.212.255 | 126 |
| 11 | 35.190.213.0/25 | 35.190.213.0 | 35.190.213.1 | 35.190.213.126 | 35.190.213.127 | 126 |
| 12 | 35.190.213.128/25 | 35.190.213.128 | 35.190.213.129 | 35.190.213.254 | 35.190.213.255 | 126 |
| 13 | 35.190.214.0/25 | 35.190.214.0 | 35.190.214.1 | 35.190.214.126 | 35.190.214.127 | 126 |
| 14 | 35.190.214.128/25 | 35.190.214.128 | 35.190.214.129 | 35.190.214.254 | 35.190.214.255 | 126 |
| 15 | 35.190.215.0/25 | 35.190.215.0 | 35.190.215.1 | 35.190.215.126 | 35.190.215.127 | 126 |
| 16 | 35.190.215.128/25 | 35.190.215.128 | 35.190.215.129 | 35.190.215.254 | 35.190.215.255 | 126 |