ip
ipku.in

IPv4 Subnet Calculator

Enter an IP with a CIDR prefix or a subnet mask to see its network, broadcast, host range, and host count. You can also split the network into smaller subnets.

$ ipcalc
Try:192.168.1.10/2410.0.0.0/8172.16.5.4/20203.0.113.9/29
IPv6 calculator →
private IP (RFC 1918)10.98.0.0/18
network10.98.0.0/18
broadcast10.98.63.255
first host10.98.0.1
last host10.98.63.254
subnet mask255.255.192.0
wildcard0.0.63.255
addresses16,384
usable hosts16,382
classA
ipcalc 10.98.0.0/18
address00001010.01100010.00000000.00000000
subnet mask11111111.11111111.11000000.00000000
network00001010.01100010.00000000.00000000
broadcast00001010.01100010.00111111.11111111
green = network part, grey = host part
hex0x0a620000
decimal174194688
reverse dns0.0.98.10.in-addr.arpa
ipv4-mapped::ffff:a62:0

/18 split into /25 · 128 subnets

close ×
#networkhost rangebroadcast
110.98.0.0/2510.98.0.1 – 10.98.0.12610.98.0.127
210.98.0.128/2510.98.0.129 – 10.98.0.25410.98.0.255
310.98.1.0/2510.98.1.1 – 10.98.1.12610.98.1.127
410.98.1.128/2510.98.1.129 – 10.98.1.25410.98.1.255
510.98.2.0/2510.98.2.1 – 10.98.2.12610.98.2.127
610.98.2.128/2510.98.2.129 – 10.98.2.25410.98.2.255
710.98.3.0/2510.98.3.1 – 10.98.3.12610.98.3.127
810.98.3.128/2510.98.3.129 – 10.98.3.25410.98.3.255
910.98.4.0/2510.98.4.1 – 10.98.4.12610.98.4.127
1010.98.4.128/2510.98.4.129 – 10.98.4.25410.98.4.255
1110.98.5.0/2510.98.5.1 – 10.98.5.12610.98.5.127
1210.98.5.128/2510.98.5.129 – 10.98.5.25410.98.5.255
1310.98.6.0/2510.98.6.1 – 10.98.6.12610.98.6.127
1410.98.6.128/2510.98.6.129 – 10.98.6.25410.98.6.255
1510.98.7.0/2510.98.7.1 – 10.98.7.12610.98.7.127
1610.98.7.128/2510.98.7.129 – 10.98.7.25410.98.7.255
1710.98.8.0/2510.98.8.1 – 10.98.8.12610.98.8.127
1810.98.8.128/2510.98.8.129 – 10.98.8.25410.98.8.255
1910.98.9.0/2510.98.9.1 – 10.98.9.12610.98.9.127
2010.98.9.128/2510.98.9.129 – 10.98.9.25410.98.9.255
2110.98.10.0/2510.98.10.1 – 10.98.10.12610.98.10.127
2210.98.10.128/2510.98.10.129 – 10.98.10.25410.98.10.255
2310.98.11.0/2510.98.11.1 – 10.98.11.12610.98.11.127
2410.98.11.128/2510.98.11.129 – 10.98.11.25410.98.11.255
2510.98.12.0/2510.98.12.1 – 10.98.12.12610.98.12.127
2610.98.12.128/2510.98.12.129 – 10.98.12.25410.98.12.255
2710.98.13.0/2510.98.13.1 – 10.98.13.12610.98.13.127
2810.98.13.128/2510.98.13.129 – 10.98.13.25410.98.13.255
2910.98.14.0/2510.98.14.1 – 10.98.14.12610.98.14.127
3010.98.14.128/2510.98.14.129 – 10.98.14.25410.98.14.255
3110.98.15.0/2510.98.15.1 – 10.98.15.12610.98.15.127
3210.98.15.128/2510.98.15.129 – 10.98.15.25410.98.15.255
3310.98.16.0/2510.98.16.1 – 10.98.16.12610.98.16.127
3410.98.16.128/2510.98.16.129 – 10.98.16.25410.98.16.255
3510.98.17.0/2510.98.17.1 – 10.98.17.12610.98.17.127
3610.98.17.128/2510.98.17.129 – 10.98.17.25410.98.17.255
3710.98.18.0/2510.98.18.1 – 10.98.18.12610.98.18.127
3810.98.18.128/2510.98.18.129 – 10.98.18.25410.98.18.255
3910.98.19.0/2510.98.19.1 – 10.98.19.12610.98.19.127
4010.98.19.128/2510.98.19.129 – 10.98.19.25410.98.19.255
4110.98.20.0/2510.98.20.1 – 10.98.20.12610.98.20.127
4210.98.20.128/2510.98.20.129 – 10.98.20.25410.98.20.255
4310.98.21.0/2510.98.21.1 – 10.98.21.12610.98.21.127
4410.98.21.128/2510.98.21.129 – 10.98.21.25410.98.21.255
4510.98.22.0/2510.98.22.1 – 10.98.22.12610.98.22.127
4610.98.22.128/2510.98.22.129 – 10.98.22.25410.98.22.255
4710.98.23.0/2510.98.23.1 – 10.98.23.12610.98.23.127
4810.98.23.128/2510.98.23.129 – 10.98.23.25410.98.23.255
4910.98.24.0/2510.98.24.1 – 10.98.24.12610.98.24.127
5010.98.24.128/2510.98.24.129 – 10.98.24.25410.98.24.255
5110.98.25.0/2510.98.25.1 – 10.98.25.12610.98.25.127
5210.98.25.128/2510.98.25.129 – 10.98.25.25410.98.25.255
5310.98.26.0/2510.98.26.1 – 10.98.26.12610.98.26.127
5410.98.26.128/2510.98.26.129 – 10.98.26.25410.98.26.255
5510.98.27.0/2510.98.27.1 – 10.98.27.12610.98.27.127
5610.98.27.128/2510.98.27.129 – 10.98.27.25410.98.27.255
5710.98.28.0/2510.98.28.1 – 10.98.28.12610.98.28.127
5810.98.28.128/2510.98.28.129 – 10.98.28.25410.98.28.255
5910.98.29.0/2510.98.29.1 – 10.98.29.12610.98.29.127
6010.98.29.128/2510.98.29.129 – 10.98.29.25410.98.29.255
6110.98.30.0/2510.98.30.1 – 10.98.30.12610.98.30.127
6210.98.30.128/2510.98.30.129 – 10.98.30.25410.98.30.255
6310.98.31.0/2510.98.31.1 – 10.98.31.12610.98.31.127
6410.98.31.128/2510.98.31.129 – 10.98.31.25410.98.31.255
6510.98.32.0/2510.98.32.1 – 10.98.32.12610.98.32.127
6610.98.32.128/2510.98.32.129 – 10.98.32.25410.98.32.255
6710.98.33.0/2510.98.33.1 – 10.98.33.12610.98.33.127
6810.98.33.128/2510.98.33.129 – 10.98.33.25410.98.33.255
6910.98.34.0/2510.98.34.1 – 10.98.34.12610.98.34.127
7010.98.34.128/2510.98.34.129 – 10.98.34.25410.98.34.255
7110.98.35.0/2510.98.35.1 – 10.98.35.12610.98.35.127
7210.98.35.128/2510.98.35.129 – 10.98.35.25410.98.35.255
7310.98.36.0/2510.98.36.1 – 10.98.36.12610.98.36.127
7410.98.36.128/2510.98.36.129 – 10.98.36.25410.98.36.255
7510.98.37.0/2510.98.37.1 – 10.98.37.12610.98.37.127
7610.98.37.128/2510.98.37.129 – 10.98.37.25410.98.37.255
7710.98.38.0/2510.98.38.1 – 10.98.38.12610.98.38.127
7810.98.38.128/2510.98.38.129 – 10.98.38.25410.98.38.255
7910.98.39.0/2510.98.39.1 – 10.98.39.12610.98.39.127
8010.98.39.128/2510.98.39.129 – 10.98.39.25410.98.39.255
8110.98.40.0/2510.98.40.1 – 10.98.40.12610.98.40.127
8210.98.40.128/2510.98.40.129 – 10.98.40.25410.98.40.255
8310.98.41.0/2510.98.41.1 – 10.98.41.12610.98.41.127
8410.98.41.128/2510.98.41.129 – 10.98.41.25410.98.41.255
8510.98.42.0/2510.98.42.1 – 10.98.42.12610.98.42.127
8610.98.42.128/2510.98.42.129 – 10.98.42.25410.98.42.255
8710.98.43.0/2510.98.43.1 – 10.98.43.12610.98.43.127
8810.98.43.128/2510.98.43.129 – 10.98.43.25410.98.43.255
8910.98.44.0/2510.98.44.1 – 10.98.44.12610.98.44.127
9010.98.44.128/2510.98.44.129 – 10.98.44.25410.98.44.255
9110.98.45.0/2510.98.45.1 – 10.98.45.12610.98.45.127
9210.98.45.128/2510.98.45.129 – 10.98.45.25410.98.45.255
9310.98.46.0/2510.98.46.1 – 10.98.46.12610.98.46.127
9410.98.46.128/2510.98.46.129 – 10.98.46.25410.98.46.255
9510.98.47.0/2510.98.47.1 – 10.98.47.12610.98.47.127
9610.98.47.128/2510.98.47.129 – 10.98.47.25410.98.47.255
9710.98.48.0/2510.98.48.1 – 10.98.48.12610.98.48.127
9810.98.48.128/2510.98.48.129 – 10.98.48.25410.98.48.255
9910.98.49.0/2510.98.49.1 – 10.98.49.12610.98.49.127
10010.98.49.128/2510.98.49.129 – 10.98.49.25410.98.49.255
10110.98.50.0/2510.98.50.1 – 10.98.50.12610.98.50.127
10210.98.50.128/2510.98.50.129 – 10.98.50.25410.98.50.255
10310.98.51.0/2510.98.51.1 – 10.98.51.12610.98.51.127
10410.98.51.128/2510.98.51.129 – 10.98.51.25410.98.51.255
10510.98.52.0/2510.98.52.1 – 10.98.52.12610.98.52.127
10610.98.52.128/2510.98.52.129 – 10.98.52.25410.98.52.255
10710.98.53.0/2510.98.53.1 – 10.98.53.12610.98.53.127
10810.98.53.128/2510.98.53.129 – 10.98.53.25410.98.53.255
10910.98.54.0/2510.98.54.1 – 10.98.54.12610.98.54.127
11010.98.54.128/2510.98.54.129 – 10.98.54.25410.98.54.255
11110.98.55.0/2510.98.55.1 – 10.98.55.12610.98.55.127
11210.98.55.128/2510.98.55.129 – 10.98.55.25410.98.55.255
11310.98.56.0/2510.98.56.1 – 10.98.56.12610.98.56.127
11410.98.56.128/2510.98.56.129 – 10.98.56.25410.98.56.255
11510.98.57.0/2510.98.57.1 – 10.98.57.12610.98.57.127
11610.98.57.128/2510.98.57.129 – 10.98.57.25410.98.57.255
11710.98.58.0/2510.98.58.1 – 10.98.58.12610.98.58.127
11810.98.58.128/2510.98.58.129 – 10.98.58.25410.98.58.255
11910.98.59.0/2510.98.59.1 – 10.98.59.12610.98.59.127
12010.98.59.128/2510.98.59.129 – 10.98.59.25410.98.59.255
12110.98.60.0/2510.98.60.1 – 10.98.60.12610.98.60.127
12210.98.60.128/2510.98.60.129 – 10.98.60.25410.98.60.255
12310.98.61.0/2510.98.61.1 – 10.98.61.12610.98.61.127
12410.98.61.128/2510.98.61.129 – 10.98.61.25410.98.61.255
12510.98.62.0/2510.98.62.1 – 10.98.62.12610.98.62.127
12610.98.62.128/2510.98.62.129 – 10.98.62.25410.98.62.255
12710.98.63.0/2510.98.63.1 – 10.98.63.12610.98.63.127
12810.98.63.128/2510.98.63.129 – 10.98.63.25410.98.63.255
01 / table

IPv4 CIDR prefix table.

Click a prefix longer than your network to split it into subnets.

prefixsubnet maskaddresseshostsin your /18
/00.0.0.04,294,967,2964,294,967,294-
/1128.0.0.02,147,483,6482,147,483,646-
/2192.0.0.01,073,741,8241,073,741,822-
/3224.0.0.0536,870,912536,870,910-
/4240.0.0.0268,435,456268,435,454-
/5248.0.0.0134,217,728134,217,726-
/6252.0.0.067,108,86467,108,862-
/7254.0.0.033,554,43233,554,430-
/8255.0.0.016,777,21616,777,214-
/9255.128.0.08,388,6088,388,606-
/10255.192.0.04,194,3044,194,302-
/11255.224.0.02,097,1522,097,150-
/12255.240.0.01,048,5761,048,574-
/13255.248.0.0524,288524,286-
/14255.252.0.0262,144262,142-
/15255.254.0.0131,072131,070-
/16255.255.0.065,53665,534-
/17255.255.128.032,76832,766-
/18255.255.192.016,38416,3821
/19255.255.224.08,1928,1902 split →
/20255.255.240.04,0964,0944 split →
/21255.255.248.02,0482,0468 split →
/22255.255.252.01,0241,02216 split →
/23255.255.254.051251032 split →
/24255.255.255.025625464 split →
/25255.255.255.128128126128 split →
/26255.255.255.1926462256 split →
/27255.255.255.2243230512 split →
/28255.255.255.24016141,024 split →
/29255.255.255.248862,048 split →
/30255.255.255.252424,096 split →
/31255.255.255.254228,192 split →
/32255.255.255.2551116,384 split →
02 / faq

About this calculator.

How do I use this subnet calculator?

▼

Type an IP address followed by a prefix, like 192.168.1.10/24, or by a subnet mask, like 192.168.1.10 255.255.255.0. Without a prefix it uses /24. Click a row in the table to split the network into smaller subnets.

Why are usable hosts always 2 fewer?

▼

The first address in a subnet is the network address and the last is the broadcast address, so neither can go to a device. The exceptions are /31 (point-to-point links, RFC 3021) and /32 (a single address), which use every address.

Can I use it from a terminal?

▼

Yes. curl 'ipku.in/en/tools/ipv4-subnet-calculator?q=192.168.1.10/24' returns the result as plain text.

Learn how to work it out →