Reverse IP Lookup

Search passive DNS records for domains observed on an IPv4 or IPv6 address. Results may be historical or incomplete.

Enter an IPv4 or IPv6 address to see observed domains, ASN context, and DNS history links.

Example IP Lookups

Start with a known public resolver, or paste the address you are investigating.

2001:8002:e22:ef00::3cfe:8f61 2001:40a8:4400:4::5266:98a8 2800:240:e:5::be62:a092 2001:2030:0:17::50ef:fe15 1.1.1.1 154.85.93.239 18.207.36.40 108.177.96.94 128.3.7.113 100.20.100.214 118.69.16.207 156.55.139.105
Browse networks by ASN →

Passive DNS records

See domains observed pointing to the address, with links for deeper DNS inspection.

Network context

Use ASN details to understand the network behind the infrastructure.

Simple export path

Open full history, exports and API access on Profundis when you need more than the sample.