Research

DNS Coffee's zone file data provides a comprehensive view of the DNS ecosystem, useful for analysis and research.

Citing DNS Coffee

If you use data provided by DNS Coffee in your research, please cite us using the following BibTeX entry:

@misc{dnscoffee,
	title        = {DNS Coffee: The DNS Historical Zone Database},
	author       = {Foster, Ian},
	year         = 2026,
	url          = {https://dns.coffee},
	urldate      = {YYYY-MM-DD},
	organization = {dns.coffee}
}

Publications

Research that DNS Coffee has supported or is cited in:

• DarkDNS: Revisiting the Value of Rapid Zone Update (2024)
• Retroactive Identification of Targeted DNS Infrastructure Hijacking (2022)
• Domain Name Lifetimes: Baseline and Threats (2022)
• Risky BIZness: Risks Derived from Registrar Name Management (2021)
• Unresolved Issues: Prevalence, Persistence, and Perils of Lame Delegations (2020)
• DNS Baseline Dynamics (2019)
• Who is .com? Learning to Parse WHOIS Records (2015)
• From .academy to .zone: An Analysis of the New TLD Land Rush (2015)

Some earlier publications may reference DNS Coffee by its former name, DZDB, when it was associated with CAIDA.

Presentations

• DNS is Still Lame — ShmooCon (2024)
• The TLDr on TLDs — HushCon (2022)
• Lost and Found Certificates — DEF CON 26 (2018)

Contact

For research inquiries, reach out to [email protected].