Packet Journey: How a Message Travels the Internet

Explore how one message becomes packets and travels through DNS, NAT, firewalls, TCP/UDP/QUIC, HTTPS, CDN, and HTTP responses.

Packet journey · 1/7

Read invisible communication as the journey of small envelopes

A short message from the browser splits into small numbered packets and comes back through name resolution, route selection, confirmation, and response.

The base specification of the IP packet: RFC 791: Internet Protocol.

Start with the 30-second demo to watch the whole journey flow past. The detailed experiment buttons stay hidden here.

Guide30-second demo

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Now: The message splits into small envelopes.
Discovery: First, watch the moment the sentence splits across several envelopes.
Next

bodyenvelopenumber

Discovery check

What is a packet?