Categorized tools for subnetting, CIDR, IP and DNS — inspired by networkingtoolbox.net
CIDR and dotted mask conversion.
Netmask ↔ wildcard mask.
CIDR to range, or minimal CIDRs.
CIDR to range, or minimal CIDRs.
Summarize CIDRs to minimal set.
A − B with minimal output.
Intersection between sets.
Containment with gaps/coverage.
Find missing ranges.
First-fit/best-fit candidates.
Format IPv6 correctly.
Binary/decimal/hex/octal.
::ffff mapping.
IPv4 ↔ NAT64 IPv6.
IPv4 ↔ 6to4.
Parse/build Teredo.
NDP multicast.
Zone suggestions.
Link-local/global ID.
fd..::/64 prefixes.
Nth within CIDR or range.
Count addresses between IPs.
From CIDR/range (seeded).
List CIDR/range addresses.
IPv4/IPv6/both patterns.
Generate random MAC addresses.
Analyze nmap scan results.
Map IP to geographic location.
Convert mask formats.
Calculate RTT and latency.
Convert units and transfer times.
Analyze HTTP headers.