Web Page Loading

graph BT
A[Browser DNS Cache]
B[OS hosts file, OS DNS cache]
C[ISP DNS Cache]
D[Ask global authority]

A --> B --> C --> D

DNS Resolution

• converts a hostname into computer friendly IP address
• default port is 80
• Browser attempts DNS resolution and request bubbles up until at some level we get the IP address associated
• HTML is loaded and further assets are loaded later on