IP Address
ELI5 — The Vibe Check
An IP address is your device's home address on the internet. Just like your house needs an address so mail can find you, your computer needs an IP address so data knows where to go. Everyone connected to the internet has one.
Real Talk
An IP address is a numerical label assigned to each device on a network that uses the Internet Protocol. It serves two purposes: host identification and location addressing. IP addresses can be static (fixed) or dynamic (assigned by DHCP).
Show Me The Code
# Get your public IP
curl ifconfig.me
# Get local IP
ifconfig | grep inet
When You'll Hear This
"What's the server's IP address?" / "Block that IP address — they're hammering our API."
Related Terms
DHCP (Dynamic Host Configuration Protocol)
DHCP is the system that automatically assigns IP addresses to devices when they join a network.
DNS (Domain Name System)
DNS is the internet's phonebook. You type 'google.
IPv4 (Internet Protocol version 4)
IPv4 is the original address format for the internet — four numbers separated by dots, like 192.168.1.1. The problem?
IPv6 (Internet Protocol version 6)
IPv6 is the new, massive address format for the internet. Instead of four small numbers, it's eight groups of letters and numbers separated by colons.
NAT (Network Address Translation)
NAT is how your home router lets all your devices share one public IP address. Your phone, laptop, and TV each get a private IP (192.168.x.