Home -> History Tools -> NS History

NS History

Find domains using a name server (NS record) in the past.

NS History

Find historical connected domains to a name server (NS record).

Enter name server. Example: ns1.google.com

Tool description

Find domains using a name server (NS record) in the past. It shows a maximum of 2,500 previous connected domains (depending on your membership type). Just type a name server and click the Go button. If you are looking for the NS history of a single domain, you must use our Domain IP/DNS History tool.

Example objectives

  • Discover historical relations like ownership between domain names.
  • Perform research on malicious name servers.
  • Monitor removed and unregistered domains on name servers of competitors.

FAQ

Q: How many NS history records do you have?
A: On February 2017 we had 900 million NS history records on file.

Q: How often do you resolve the NS records for a domain?
A: Our DNS crawlers try to resolve every domain name once per month.

Q: How many name servers do you have?
A: We have 6+ million active name servers and 40+ million inactive name servers on file.

Q: How many domains do you have?
A: We have access to all gTLD (ex com, net, org) and nTLD (ex xyz, berlin, nyc) daily zone files. For ccTLD (ex de, fr, eu) our coverage is between 50% and 80% depending on the ccTLD.

Q: Is this tool available for all Top Level Domains?
A: Yes, the NS History tool returns all domains.

Tools for you

Your public IP Address

Information about your public IP Address like reverse dns, hosting info and whois data.

my IP Address for Windows 8.1 & 10

This app shows detailed information about your IP Address, your domain and your provider.

Other services

Browser Addons

Our collection of browser extensions and apps.

Premium API

Premium API enables access for 3rd party services to our content and tools.

Premium Website Access

Premium website access is for the IT professional. You get extra page views, more alerts and extra features.