List CNAMEs with dig.

TODO: collapasable, copyable, download, etc

On a Mac CLI, how do I list all the CNAMEs for a domain ?To list all the CNAMEs for a domain on a Mac using the command line, you can use the dig command. Here is how you can do it:

1. Open the Terminal.

2. Use the dig command with the CNAME query type. Replace example.com with your domain name.

dig CNAME example.com

However, keep in mind that the dig command will return only one CNAME record if it exists. Domains typically do not have multiple CNAME records directly associated with them. Instead, each subdomain may have its own CNAME record. If you want to find all CNAME records for a domain and its subdomains, you'll need to know the subdomains in advance or use other methods to discover them.

To find CNAME records for various subdomains, you can individually query each subdomain:

dig CNAME subdomain.example.com

For a more comprehensive search, you might consider using a third-party tool or service that can enumerate subdomains and their DNS records.

Alternatively, if you have access to the zone file for the domain (common if you manage the DNS for the domain), you can directly inspect it for CNAME records. However, this usually requires administrative access to the DNS server or service managing the domain.This didn't list them all ```dig CNAME deductive.ai

; <<>> DiG 9.10.6 <<>> CNAME deductive.ai ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 37524 ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 512 ;; QUESTION SECTION: ;deductive.ai. IN CNAME

;; AUTHORITY SECTION: deductive.ai. 900 IN SOA ns-423.awsdns-52.com. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400

;; Query time: 341 msec ;; SERVER: 75.75.75.75#53(75.75.75.75) ;; WHEN: Thu May 16 10:25:36 PDT 2024 ;; MSG SIZE rcvd: 122```To list all CNAME records for a domain and its subdomains, you can use the following steps:

1. Use a Subdomain Enumeration Tool: There are several tools that can help you discover subdomains for a domain. One popular tool is sublist3r. It can enumerate subdomains using various search engines and DNS brute force techniques.

   • First, install sublist3r if you haven't already:

     pip install sublist3r
     

   • Then, run sublist3r to find subdomains:

     sublist3r -d deductive.ai -o subdomains.txt
     

   • This will save the list of discovered subdomains to subdomains.txt.

2. Check CNAME Records for Each Subdomain: Once you have a list of subdomains, you can use dig or a similar DNS query tool to check for CNAME records for each subdomain.

   You can automate this process using a simple script. Here's an example in Bash:

   #!/bin/bash
   
   domain="deductive.ai"
   subdomains_file="subdomains.txt"
   
   while IFS= read -r subdomain; do
       dig +short CNAME "$subdomain" >> cname_records.txt
   done < "$subdomains_file"
   

   • Save the script to a file, e.g., check_cnames.sh.

   • Make the script executable:

     chmod +x check_cnames.sh
     

   • Run the script:

     ./check_cnames.sh
     

   • This will save the CNAME records for each subdomain to cname_records.txt.

3. Review the Results: Open cname_records.txt to review the CNAME records found.

This approach helps you identify and list CNAME records for all subdomains of a given domain, providing a comprehensive view of CNAME configurations.

List CNAMEs with dig. created at Tue Jan 20 1970 20:38:00 GMT+0000 (Coordinated Universal Time)