These refer to domains that have consistently resolved through DNS over a long period. Long-lived DNS activity often indicates legitimate, mature, and stable infrastructure, since malicious domains typically have short lifespans due to rapid detection and takedowns.
Three questions every analyst asks before acting on this signal.
These refer to domains that have consistently resolved through DNS over a long period. Long-lived DNS activity often indicates legitimate, mature, and stable infrastructure, since malicious domains typically have short lifespans due to rapid detection and takedowns.
It means the domain has continuously resolved to the same IP address for an extended duration. Such stability is typical of corporate or cloud-based infrastructure, whereas malicious domains frequently change IPs to evade detection — a technique known as 'fast-flux'.
Thresholds vary depending on data telemetry and observation periods. Typically, domains active for over 6–12 months are considered 'Long-Lived', while those continuously resolving for more than 1 year are deemed 'Well-Established'. These metrics help analysts assess domain trustworthiness over time.
A realistic shape of the entry the engine appends to the risk_signals array when this signal fires. Evidence keys are subgroup-default; per-signal overrides documented in the API reference.
{
"slug": "ip_long_time_up_and_running",
"name": "Long-Lived Active Domain",
"group": "dns_history",
"subgroup": "ip_stability_retention",
"direction": "safe",
"evidence": {
"current_ip_lifespan_days": 612,
"median_ip_lifespan_days": 540,
"ip_churn_30d": 1,
"last_ip_change_days_ago": 612
}
}7 other signals share the same subgroup. They detect related behaviors and often co-fire on the same IOC.
It indicates that the domain has maintained the same IP address or hosting infrastructure for an extended period—weeks, …
It indicates that the domain has recently become active and started responding to DNS queries after a period of inactivi…
It indicates that the domain remains associated with an IP address for only a short duration—typically a few hours or da…
It means the domain operates on an IP address that is not shared with any other unrelated domains. This indicates a dedi…
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