It indicates that a single IP address is used by a significantly large number of domains. This assessment is based on a statistically derived threshold — determined through analysis of global IP-to-domain distributions — and consistently applied during investigations.
Three questions every analyst asks before acting on this signal.
It indicates that a single IP address is used by a significantly large number of domains. This assessment is based on a statistically derived threshold — determined through analysis of global IP-to-domain distributions — and consistently applied during investigations.
When an IP hosts an unusually high number of domains, it often belongs to shared hosting environments. Such IPs are not necessarily malicious but statistically show higher correlations with spam, phishing, and malware-hosting activities, especially when the associated domains have low reputation or short lifespans.
No. Many legitimate hosting providers use shared IPs to host thousands of domains. However, when the number of hosted domains exceeds the statistically defined threshold and overlaps with suspicious or newly registered domains, the IP becomes a concern for SOC and CTI analysts.
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_shared_with_alot_of_domains",
"name": "Highly Shared IP",
"group": "relational_intelligence",
"subgroup": "dns_relational_infra",
"direction": "malicious",
"evidence": {
"shared_ip_domain_count": 1247,
"ns_overlap_with": [
"bad-domain-1.tld",
"bad-domain-2.tld"
],
"proximity_score": 0.84,
"rapid_ip_change_count_30d": 38
}
}2 other signals share the same subgroup. They detect related behaviors and often co-fire on the same IOC.
It indicates that the domain frequently changes its associated IP addresses, a known technique used by threat actors to …
It shows that the domain uses a rarely seen or low-visibility public nameserver provider. Such providers often lack stro…
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