Tools by Afroz Ahmad

Dual Stack Subnet Studio

Run precise IPv4 and IPv6 calculations in one modern dashboard. Explore wildcard masks, binary representations, address counts, and smart annotations without switching tools.

Master subnetting faster Jump to calculator
IPv4 usable hosts (last run) --
IPv6 host bits (last run) --
Latest scope detected --

IPv4 quick picks RFC 1918

Common ranges you can paste directly into the calculator.

  • 10.0.0.0/8 – Large private block (65,536 /16s).
  • 172.16.0.0/12 – Mid-sized private space.
  • 192.168.0.0/16 – Home & small office networks.
  • 169.254.0.0/16 – Link-local (APIPA).
  • 100.64.0.0/10 – Carrier-grade NAT.
  • 127.0.0.1/32 – Loopback testing.

IPv6 quick picks

Use these samples to explore the IPv6 tab.

  • 2001:db8::/32 – Documentation network.
  • fd12:3456:789a::/48 – Unique local (ULA).
  • fe80::1/64 – Link-local interface.
  • 2001:4860:4860::8888/32 – Global unicast (Google DNS).
  • ::1/128 – Loopback in IPv6.
  • ff02::1/16 – Multicast, all nodes on link.