IP Address &
Network Tools
Inspect your public IP, calculate subnets, look up DNS records, and explore networking fundamentals — all in your browser, with zero data sent to a server.
Live Network Inspector
Real-time client & browser metadata — detected in your browser, not on a server
ISP / Network: —
Region: —
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All IP calculations, subnet math, and binary conversions happen entirely inside your browser. Nothing is sent to a server.
- No server receives your IP inputs
- No analytics on tool usage
- No session tracking
CIDR Subnet Calculator
Compute network prefix, netmask, wildcard mask, and usable host ranges
Interactive CIDR & Subnet Range Calculator
Subnet Mask
255.255.255.0
Network Address
192.168.1.0
Broadcast Address
192.168.1.255
Usable Host Range
192.168.1.1 - 192.168.1.254
All Network Tools
Browser-native tools for network engineers, sysadmins, and developers
CIDR Calculator
IPv4 / IPv6Subnet ranges, wildcard mask & host capacity
Subnet Calculator
NetworkingBitmask division & netmask calculations
Binary IP Converter
IPv432-bit binary octet transformation
DNS Record Lookup
DNSQuery A, AAAA, MX, TXT, CNAME records
Port Reference
TCP/UDPCommon network port registry & socket lookup
What is my IP?
Public IPPublic IP, RFC 1918 & CGNAT range verifier
IP & Networking Reference
In-depth technical guides for CCNA, SysAdmin, and Network Architecture
What is an IP Address? (IPv4 vs IPv6)
A comprehensive technical explanation of Internet Protocol addressing, packet routing, and network interface identification.
Public vs Private IP Addresses & RFC 1918
Understand the difference between globally routable public IPs and reserved RFC 1918 private IPv4 ranges.
Subnetting & CIDR Notation Explained
Learn how to split network ranges, calculate subnet masks, and master Classless Inter-Domain Routing (CIDR).