IT Forensics · OSINT

Forensic analysis of DNS history – Forensic investigation of historical DNS records

Historical DNS records can reveal a domain’s previous IP addresses, name servers and hosting providers, even if the current DNS configuration has already been changed.

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This history may be useful for understanding the development of a domain’s technical infrastructure over a specific period.

Why LanCologne?

Since its foundation, LanCologne has specialised in professional IT forensics. Our staff have decades of experience in the field of information technology and assist companies, solicitors, private individuals and, on a regular basis, the courts in the technical investigation of complex digital matters.

Our OSINT investigations are always carried out as a complementary component to existing IT forensic, legal or internal corporate enquiries. Every step of the investigation and every piece of digital evidence found is documented and, where technically possible, archived to ensure traceability even if the original online content is subsequently altered or deleted.

Our services

We research available historical DNS data sets for a relevant domain and present the development of its infrastructure in a manner that is forensically verifiable.

Typical areas of application

Reconstructing the infrastructure history of a domain
Supplementing investigations into phishing and cyber attacks
Identification of previous hosting providers
Support in investigating domain takeovers
Judicial and non-judicial expert reports
Collaboration with IT security teams

How a DNS history analysis works

We research available historical DNS records for the relevant domain and present previous IP addresses, name servers and hosting assignments in a chronological, easy-to-follow overview.

Why is DNS history analysis relevant in a forensic context?

Previous infrastructure assignments can provide important clues for identifying the operators behind a domain.

The DNS history may also be relevant for determining the timing of an incident, such as a change to the hosting infrastructure.

Frequently Asked Questions

How far back does the available DNS history go?+
This depends on the availability of relevant historical data and is assessed on a case-by-case basis.
Can every change to the DNS configuration be traced?+
No, not every change is recorded in the available historical data sets; any gaps are documented transparently.
Is this analysis combined with the WHOIS search?+
Yes, the two methods often complement each other and are used in combination.

LanCologne – IT Forensics OSINT Cologne

Do you require a professional OSINT investigation into „forensic analysis of DNS history"? LanCologne can assist you with a transparent, documented analysis of publicly available digital sources to support your IT forensic, legal or internal corporate enquiries.

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