DNS isn’t just about resolving domains to IP addresses — it’s a window into the infrastructure of the internet. And when DNS records change, they leave behind valuable fingerprints that can reveal everything from evasive threat actors to compromised servers.

DNS Changes Are Clues

Changes to DNS records — like A, AAAA, NS, and MX — are often early signs of infrastructure shifts. Malicious actors frequently rotate IPs, swap hosting providers, or reconfigure their DNS setups to avoid detection.

• IP Address Rotations: Used to bypass blocklists or avoid attribution
• Name Server Updates: Can indicate new control or obfuscation attempts
• TTL Tweaks: Low TTLs often mean infrastructure is meant to be short-lived

DNS Forensics in Action

By comparing historical DNS data, analysts can trace how a domain’s behavior has evolved over time. DNSArchive makes this easy by showing snapshots of:

• Past IPs and ASNs associated with a domain
• Shared hosting infrastructure with other suspicious domains
• Rapid DNS shifts tied to phishing or malware campaigns

Early Threat Detection

Spotting these changes early can help security teams detect suspicious behavior before damage occurs. For example, if a domain suddenly moves to a hosting provider known for malware distribution, it could signal staging for an attack.

DNSArchive Makes It Easy

DNSArchive gives researchers, SOC analysts, and defenders access to historical DNS resolutions, NS records, TTL changes, and more — helping correlate activity, pivot on infrastructure, and attribute campaigns with confidence.

Whether you're investigating phishing domains, malware hosts, or suspicious IP clusters, DNSArchive offers the historical lens needed for deep DNS-based threat detection.