Reverse Nameserver (NS) Lookup API
Query by domain or nameserver to get a JSON list of all the domains that point to the same nameserver.
Query by domain or nameserver to get a JSON list of all the domains that point to the same nameserver.
The Reverse Nameserver Lookup API allows you to find all the domains that host their DNS on the same nameserver. This can be useful for identifying other domains that may be related to the target domain, or for identifying other domains that may be hosted on the same service.
Get the data you need quickly with a simple, well-documented REST API that returns JSON results.
Query by domain to find other domains that share the same nameserver(s). Or search by nameserver to find all domains that share an authoritative DNS server.
Get comprehensive results thanks to our constantly updated database with DNS records for 300+ million domains.
Our API returns accurate results, even in advanced scenarios. Supports all common nameserver setups.
Sign up for a free account and get 25 credits to use with no restrictions or time limits.
Test our APIs to see if they meet your needs without spending any money. If you're happy with what you see, subscriptions start at $20/month.
Create Account