Number of Nameservers

Test Weight: normal
DNS assigns an IP address to the names of servers on the internet. It is advisable, to increase the availability of a website, to use several name servers. RFC2182, section 5, suggests to use a minimum of 3 and a maximum of 7 name servers.Source and further information:, and
DNS: Domain Name System
IP: Internet Protocol

Test Results

  • Total 100% 100000
  • Not tested 2.7% 2745
  • Warning 0% 0
  • Suggestion 57.6% 57629
  • Hint 0% 0
  • Passed 39.6% 39626
  • Total amount of tests run.
  • This test was not carried out for this website.
  • The category Warning is not being used for this test.
  • The tested website contains less than three name servers.
  • The category Hint is not being used for this test.
  • The tested website contains more than two name servers.

Report False Result for this Test

To prevent abuse and spam, you must register to notify wrong results.

Register now for free

User Comments

2/17/2020 9:03:15 AM Administrator
Comments welcome
We welcome any kind of questions, comments and criticism with regards to this test, such as:
  • Good & bad aspects
  • Reporting errors and spelling issues
  • Reporting dead links
  • Additions
  • Comments on the weighting of the test (see at the top)
  • Reporting wrong or additional sources and further information (links)
  • General questions about this test
Should you not wish to have your comments potentially published, please send them to
10/1/2017 12:55:40 AM
10/23/2012 7:01:40 AM
Testimonials How Others See Us Below are the unedited comments of visitors to the University of Nigeria, Nsukka (UNN) extracted from the visitors’ notebook from July 10, 2012 to October 5, 2012. see
2/20/2009 11:28:26 AM Qualidator-Support
Anzahl DNS Server Guten Tag Herr Oppitz empfehlenswert ist es einen externen DNS-Anbieter zu wählen. So ist man auch unabhängig vom Hoster. Ein empfehlenswerter DNS-Anbieter ist z.B.
2/20/2009 10:56:47 AM Martin Oppitz
Anzahl DNS Server
Wie kann man die Anzahl seiner DNS Server erhöhen?

Write a comment/Ask a question

In order to avoid abuse and spam, you need to be a registered user to leave comments.

Register now for free

Qualidator News & Hints

Qualidator SiteAnalyzer has achieved "Windows 8 App Certification" (Feb 2014)
HTML5 Validator for SiteAnalyzer
When upgrading to HTML 5 SiteAnalyzer helps you validating all pages of your website for issues.
More infos and download
HTTP Compression Test

HTTP Compression of HTML, JavaScript and CSS can now be tested directly in SiteAnalyzer. Different User Agents are available in order to test the proper behavior.
Qualidator for SmartPhones has been optimized for the iPhone and other SmartPhones in the last few month. Check it out. Feedback welcome.
Do you already know the Qualidator® SiteAnalyzer?
The Qualidator® SiteAnalyzer is a Windows application, developed to allow a one step, page by page, automated validation of an entire web project (XHTML & CSS), and to review the quality by carrying out over 30 additional tests.

Follow us on Twitter

Recommendation: Uptime Monitoring

Recommendation: HTML2PDF Rendering Service

Key Benefits
  • Renders URLs of (dynamic)(x)html pages including CSS to PDF on the fly
  • html2pdf is a Service NOT a class library or EXE
  • Very easy to use

Tell me more about the HTML2PDF Rendering Service


  • SwissMadeSoftware
  • ZTPrentner IT
Copyright © GmbH
CMS Login schliessen

CMS Login

Please sign in to edit content
loading and processing data Verarbeite Anforderung ...