**Contents**show

## What is a 21 subnet?

Subnet Cheat Sheet – 24 Subnet Mask, 30, 26, 27, 29, and other IP Address CIDR Network References

CIDR | Subnet mask | # of IP addresses |
---|---|---|

/22 | 255.255.252.0 | 1,024 |

/21 | 255.255.248.0 |
2,048 |

/20 | 255.255.240.0 | 4,096 |

/19 | 255.255.224.0 | 8,192 |

## How many hosts are in a 20 subnet?

IPv6 Subnet Calculator

Prefix size | Network mask | Usable hosts per subnet |
---|---|---|

/20 | 255.255.240.0 | 4,094 |

/21 | 255.255.248.0 | 2,046 |

/22 | 255.255.252.0 | 1,022 |

/23 | 255.255.254.0 | 510 |

## What is the maximum number of hosts in a 20 subnet?

Class A

Network Bits | Subnet Mask | Number of Hosts |
---|---|---|

/20 | 255.255.240.0 | 4094 |

/21 | 255.255.248.0 | 2046 |

/22 | 255.255.252.0 | 1022 |

/23 | 255.255.254.0 | 510 |

## How many hosts are in a 22 subnet?

Subnet Mask Cheat Sheet

Addresses | Hosts | |
---|---|---|

/ 25 | 128 | 126 |

/ 24 | 256 | 254 |

/ 23 | 512 | 510 |

/ 22 | 1024 |
1022 |

## How do you calculate hosts per subnet?

To calculate the number of possible hosts per subnet, **use the formula 2h – 2, where h equals the number of host bits**. The reason two addresses must be subtracted is because of the network address and the broadcast address.

## How do you determine the number of hosts in a subnet?

You can figure out how many hosts you can have in your subnet by **subtracting the number of network bits from the number of total bits**: in other words, 32 total bits, minus the number of network bits. Let’s use 26 as an example. A subnet with 26 network bits has six bits available for the host IP addresses.

## What is a 255.255 255.0 subnet?

A subnet mask of 255.255. 255.0 **allows for close to 256 unique hosts within the network** (since not all 256 IP addresses can be used). … This is the default subnet mask used by Class B networks and provides up to 65,536 IP addresses (256 x 256). The largest Class A networks use a subnet mask of 255.0.

## What is the subnet for host ID 172.16 3.65 23?

What is the subnet for host ID 172.16. 3.65/23? A /23 is **255.255.** **254.0**.

## What is the maximum number of hosts allowed on subnet 172.30 100.0 22?

D Average attenuation/average distortion. 15 What is the maximum number of hosts allowed on subnet 172.30. 100.0/22? **A 258**.

## How many subnets and hosts per subnet can you get from the network 10.0 0.0 20?

3 Answers. The maximum number of available hosts is **4094**.

## How many subnets and hosts per subnet can you get from the network 172.28 0.0 23?

Subnetting Questions

Question | Answer |
---|---|

What is the broadcast address of the network 172.31.238.0/23? | 172.31.239.255 |

How many subnets and hosts per subnet can you get from the network 172.25.0.0 255.255.255.240? | 4096 subnets and 14 hosts |

What is the broadcast address of the network 172.26.136.0/21? | 172.26.143.255 |