pdns-qof/README.md

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Passive DNS - Common Output Format
==================================
This document describes the output format used between Passive DNS query interface. The output format description
includes also a common meaning per Passive DNS system.
This format originated as a discussion between Aaron Kaplan, Paul Vixie, Henry Stern and Alexandre (Adulau) in ~ 2011.
It was submitted to the IETF in 2014 and since then had a few minor updates.
It is being used by multiple operators of passive DNS services to offer an identical output format for queries to a passive DNS database.
This allows the person issuing the query to combined and/or compare results.
The output format is in JSON.
How to Contribute to the Document
---------------------------------
You can make pull request to the xml document. We are looking for comments from passive DNS developers in order to improve the document.
IETF Internet-Draft
-------------------
- [Version 9 published as Internet-Draft](https://datatracker.ietf.org/doc/draft-dulaunoy-dnsop-passive-dns-cof/) - 11 February 2022
Users and Use-cases
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* [CERT.at](https://pdns.cert.at)
* [Farsight](https://farsightsecurity.com)
* [CIRCL](https://www.circl.lu/services/passive-dns/)
* [D4 Project Passive DNS](https://www.d4-project.org/2019/05/28/passive-dns-tutorial.html)
* [balboa](https://github.com/DCSO/balboa)
* [mnemonic](https://docs.mnemonic.no/display/API/Passive+DNS+Simplified+Integration+Guide)
* ... add yours please. Create a pull request to this file please.