Account Pricing API About Support

SubDomains

Find SubDomains of a domain or hosted on an IP.

The SubDomains Tool requires a premium subscription.

Use the SubDomains Tool for:

Discover current and historical SubDomains for a domain.
View SubDomains hosted on an IP Address or subnet.
Monitor new and removed SubDomains on IP addresses.
Discover previous relations between (dropped) SubDomains.

Our Statistics

Premium Only

1+ billion Active SubDomains

Premium Only

6+ billion historical IP Records

Premium Only

1+ billion Dropped SubDomains

Premium Only

5+ years of historical SubDomains

Frequently Asked Questions

When did you start recording IP history for subdomains?

We began recording historical records in 2018, initially saving only A (IPv4) records. In 2019, we expanded our record-keeping to include AAAA (IPv6) records.

How often do you resolve the IP records of a subdomain?

Our DNS crawlers attempt to resolve each subdomain every month.

Examples

Premium Only

SubDomains of denhaag.nl

Premium Only

SubDomains on 82.201.91.21

Premium Only

SubDomains on 217.68.48.0/22

Premium Only

SubDomains on 2a02:2400::/34

Domain - History - RDNS

Terms and conditions | Privacy policy | Cookie policy | Credits