Domain Name System Concept - Document Details

About This Page

This page is part of the Azure documentation. It contains code examples and configuration instructions for working with Azure services.

View on GitHub 📚 View on Microsoft Learn

Bias Analysis

Detected Bias Types

windows_first

windows_tools

powershell_heavy

missing_linux_example

Summary

The documentation demonstrates a Windows bias by prioritizing Windows/Active Directory DNS concepts, referencing Microsoft best practices and tools, and providing more detailed examples and screenshots for Windows environments. Linux/BIND and cross-platform considerations are mentioned but receive less detail and are often presented after Windows solutions. Tooling and troubleshooting examples are Windows-centric, with Linux alternatives included but less emphasized.

Recommendations

Present Linux/BIND DNS server configuration and troubleshooting examples alongside or before Windows/Active Directory examples where applicable.
Include screenshots and walkthroughs for Linux DNS management tools (e.g., Webmin, command-line BIND tools) similar to those shown for Windows DNS Manager.
Expand on Linux/BIND-specific best practices, such as dynamic DNS, scavenging, and SRV record creation, with explicit instructions and references.
Provide parity in troubleshooting sections, e.g., show how to view TTL and DNS record details using Linux tools (e.g., dig, host) with sample outputs and explanations.
Balance references to Microsoft documentation with authoritative Linux/BIND documentation links.
Clarify when recommendations are specific to Windows/Active Directory DNS versus general DNS best practices, and offer Linux/BIND equivalents where possible.
Ensure all command-line examples (e.g., nslookup, dig) are equally detailed for both Windows and Linux, including advanced usage scenarios.

Create Pull Request

Scan History

Date	Scan	Status	Result
2025-07-12 23:44	#41	cancelled	Biased
2025-07-12 00:58	#8	cancelled	Clean
2025-07-10 05:06	#7	processing	Clean

Flagged Code Snippets

C:\> nslookup x.x.x.x
Server:  contoso.com
Address:  x.x.x.x

Name:    ANF-1234.contoso.com
Address:  x.x.x.x

C:\> nslookup x.x.x.x
Server:  contoso.com
Address:  x.x.x.x

Name:    ANF-5678.contoso.com
Address:  x.x.x.x

C:\>nslookup anf.local
Server:  dns.anf.local
Address:  x.x.x.a

Name:    anf.local
Addresses:  x.x.x.x
            x.x.x.y

C:\>nslookup -query=hinfo anf.local
Server:  dns.anf.local
Address:  x.x.x.a

anf.local
        primary name server = dns.anf.local
        responsible mail addr = root.dns.anf.local
        serial  = 7
        refresh = 604800 (7 days)
        retry   = 86400 (1 day)
        expire  = 2419200 (28 days)
        default TTL = 604800 (7 days)

C:\>nslookup -debug anf.local
------------
Got answer:
    HEADER:
        opcode = QUERY, id = 1, rcode = NOERROR
        header flags:  response, auth. answer, want recursion, recursion avail.
        questions = 1,  answers = 1,  authority records = 0,  additional = 0

    QUESTIONS:
        x.x.x.x.in-addr.arpa, type = PTR, class = IN
    ANSWERS:
    ->  x.x.x.x.in-addr.arpa
        name = dns.anf.local
        ttl = 604800 (7 days)

------------
Server:  dns.anf.local
Address:  x.x.x.a

------------
Got answer:
    HEADER:
        opcode = QUERY, id = 2, rcode = NXDOMAIN
        header flags:  response, auth. answer, want recursion, recursion avail.
        questions = 1,  answers = 0,  authority records = 1,  additional = 0

    QUESTIONS:
        anf.local.ANF.LOCAL, type = A, class = IN
    AUTHORITY RECORDS:
    ->  anf.local
        ttl = 604800 (7 days)
        primary name server = dns.anf.local
        responsible mail addr = root.dns.anf.local
        serial  = 7
        refresh = 604800 (7 days)
        retry   = 86400 (1 day)
        expire  = 2419200 (28 days)
        default TTL = 604800 (7 days)