Question 1

What is IP Range Calculator?

Accepted Answer

An IP range calculator shows the full address span of a CIDR block — first IP, last IP, total count, and usable host range.

Question 2

How does the IP Range Calculator work?

Accepted Answer

From an IP and CIDR prefix it computes network and broadcast bounds, then lists how many addresses sit between them.

Question 3

How do I use the IP Range Calculator?

Accepted Answer

Enter any IP inside the subnet and its prefix (for example 10.0.0.15/28). The tool displays the complete IP range and usable hosts.

Question 4

How do I calculate an IP address range?

Accepted Answer

Find the network address (IP AND mask) and broadcast (network OR wildcard). Everything from network through broadcast is the IP range.

Question 5

How do I find the first and last IP in a subnet?

Accepted Answer

First IP is the network address; last is the broadcast. First/last usable hosts are usually one inside those bounds.

Question 6

How many addresses are in an IP range?

Accepted Answer

Count = 2^(32−prefix). A /24 has 256 addresses; a /30 has 4; a /16 has 65,536.

Question 7

Can I calculate a range from CIDR?

Accepted Answer

Yes. CIDR notation such as 192.168.10.0/24 fully defines the IP range this calculator expands.

Question 8

Can I find usable IPs in a network range?

Accepted Answer

Yes. Usable IPs exclude the network and broadcast for standard subnets; /31 and /32 follow special rules shown in the results.

Question 9

Is this IP Range Calculator free to use?

Accepted Answer

Yes. This IP range calculator online free tool runs entirely in your browser.

Question 10

Can I use the IP Range Calculator on mobile?

Accepted Answer

Yes. Mobile-friendly layout for home networks and on-the-go subnet checks.

IP Range Calculator

Free Online IP Range Calculator