UDP Example

Simple UDP

Explore a simple UDP packet example with full header breakdown. Learn source port, destination port, length, and checksum fields in a real UDP datagram.

Hex Data

05 D0 00 2C 00 08 00 00
Note: Standard DNS query packet (port 53), header only 8 bytes
Load in Visualizer
basicdns

Field Breakdown

Source Port
Source port number (0-65535)
1488
Destination Port
Destination port number (0-65535)
44
Length
Length of UDP header and data in bytes (minimum 8)
8
Checksum
Checksum for error detection (optional in IPv4, mandatory in IPv6)
0x0000

Related Resources

UDP Protocol Visualizer - Parse & Analyze UDP PacketsUDP Header Format and Fields Explained - ByteLensSource Port - Definition, Range, and Usage in NetworkingDestination Port - Definition, Range, and Usage in Networking

About UDP

User Datagram Protocol (RFC 768)

Fields: 4
Endianness: big
Specification: RFC 768