Networking Tools
Categorized tools for subnetting, CIDR, IP and DNS — inspired by networkingtoolbox.net
Subnetting
CIDR
CIDR ↔ Netmask
CIDR and dotted mask conversion.
Wildcard Mask
Netmask ↔ wildcard mask.
IPv4 Range ↔ CIDR
CIDR to range, or minimal CIDRs.
IPv6 Range ↔ CIDR
CIDR to range, or minimal CIDRs.
CIDR Aggregator
Summarize CIDRs to minimal set.
CIDR Difference
A − B with minimal output.
CIDR Overlap
Intersection between sets.
CIDR Contains
Containment with gaps/coverage.
CIDR Gaps
Find missing ranges.
Next Available
First-fit/best-fit candidates.
IP Tools
IPv6 Expand/Compress
Format IPv6 correctly.
IPv4 Representations
Binary/decimal/hex/octal.
IPv4 ↔ IPv6 (mapped)
::ffff mapping.
IPv6 NAT64
IPv4 ↔ NAT64 IPv6.
IPv6 6to4
IPv4 ↔ 6to4.
IPv6 Teredo
Parse/build Teredo.
Solicited-Node
NDP multicast.
IPv6 Zone ID
Zone suggestions.
MAC ↔ EUI-64
Link-local/global ID.
ULA Generator
fd..::/64 prefixes.
Nth IP
Nth within CIDR or range.
IP Distance
Count addresses between IPs.
Random IP
From CIDR/range (seeded).
Enumerate
List CIDR/range addresses.
IP Regex
IPv4/IPv6/both patterns.
DNS
Network
MAC Address Generator
Generate random MAC addresses.
Port Scanner Analyzer
Analyze nmap scan results.
IP Geolocation
Map IP to geographic location.
Subnet Mask Converter
Convert mask formats.
Network Latency Calculator
Calculate RTT and latency.
Bandwidth Calculator
Convert units and transfer times.
HTTP Header Parser
Analyze HTTP headers.