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IPinfo.dog

Local network tools

IP calculator

Calculate IPv4 / IPv6 networks, masks, address ranges and subnets. Generate the reverse-DNS PTR name for an individual address.

Accepts IPv4, IPv6 and dotted IPv4 masks. Without a prefix, the input is treated as a single address.

Use a longer prefix. Up to 16 subnets are previewed.

Calculation results

IPv4
Normalized address
192.168.1.10
Network / prefix
192.168.1.0/24
Subnet mask
255.255.255.0
Full address range
192.168.1.0 — 192.168.1.255
Total addresses
256
Broadcast address
192.168.1.255
Wildcard mask
0.0.0.255
Host address range
192.168.1.1 — 192.168.1.254
Host address count
254
Reverse-DNS PTR name
10.1.168.192.in-addr.arpa.

Conventional host counts exclude network and broadcast addresses. A /31 point-to-point link has 2 addresses; a /32 has 1. This does not imply public routability or allocation.

Subnets /26

4 subnets in total. Showing the first 4.

  1. 192.168.1.0/26
  2. 192.168.1.64/26
  3. 192.168.1.128/26
  4. 192.168.1.192/26

Calculation and input validation run in your browser. Your input is neither uploaded nor saved. PTR names are generated locally; this does not query DNS or change reverse-DNS records.