DNS Example

DNS Query

Break down a real DNS query packet field by field. Learn transaction ID, flags, question count, answer count, authority count, additional count, and query structure.

Hex Data

01 00 00 01 00 00 00 00 00 00 03 77 77 77 07 65 78 61 6D 70 6C 65 03 63 6F 6D 00 00 01 00 01
Note: Query for A record of www.example.com, 1 question, 0 answers
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querya-record

Field Breakdown

Transaction ID
Identifier for matching queries and responses
0x0100
Flags
Query/Response flags and codes
0b0000000000000001
Questions
Number of questions
0
Answer RRs
Number of answer resource records
0
Authority RRs
Number of authority resource records
0
Additional RRs
Number of additional resource records
887

Related Resources

DNS Protocol Visualizer - Parse & Analyze DNS MessagesDNS Message Format Explained - ByteLensDNS Response Packet Example - ByteLensDNS MX Record Query Example - ByteLensDNS NXDOMAIN Error Example - ByteLensDNS over UDP Transport Example - ByteLens

About DNS

Domain Name System (RFC 1035)

Fields: 6
Endianness: big
Specification: RFC 1035