What is BGP?

The Internet's routing protocol explained

What is an Autonomous System?

AS numbers, RIRs, and how networks are organized

What is a BGP Looking Glass?

How to view the internet's routing table

IP Route Lookup Guide

Step-by-step guide to looking up BGP routes

Understanding AS Paths

How to read AS paths and path selection

What is RPKI?

Securing BGP with route origin validation

What is DNS?

The Internet's phone book explained

What is an IP Address?

How devices are identified on the internet

IPv4 vs IPv6

Address formats, capacity, and the transition

Network Prefixes (CIDR)

How IP blocks are routed and allocated

Internet Exchange Points

Where networks meet to exchange traffic

What is Peering?

How networks interconnect and exchange traffic

How Traceroute Works

Mapping the network path hop by hop

What is a CDN?

Content delivery and BGP anycast

What is DNS over HTTPS?

Encrypting DNS for privacy

What is a BGP Hijack?

How attackers reroute internet traffic

What are TLDs?

Top-level domains and root servers

What is Anycast?

One IP address, many servers

What is a Subnet?

Dividing IP networks into segments