Turbolist3r : Subdomain Enumeration Tool With Analysis Features For Discovered Domains

Turbolist3r is a fork of the sublist3r subdomain discovery tool. In addition to the original OSINT capabilties of sublist3r, turbolist3r automates some analysis of the results, with a focus on subdomain takeover.

Turbolist3r queries public DNS servers for each discovered subdomain. If the subdomain exists (i.e. the resolver replied with an address), the answer is categorized as CNAME or A record. By examining A records, it is possible to discover potential penetration testing targets for a given domain. Likewise, the process of looking for subdomain takeovers is simple; view the discovered CNAME records and investigate any that point to applicable cloud services.

Please do not use for illegal purposes.

Also Read – AttackSurfaceMapper : Tool That Aims To Automate The Reconnaissance Process


Short FormLong FormDescription
-d–domainDomain name to enumerate subdomains of
-b–bruteforceEnable the subbrute bruteforce module
-p–portsScan the found subdomains against specific tcp ports
-v–verboseEnable the verbose mode and display results in realtime
-t–threadsNumber of threads to use for subbrute bruteforce
-e–enginesSpecify a comma-separated list of search engines
-o–outputSave discovered domain names to specified text file
-h–helpshow the help message and exit
-a–analyzeDo reverse DNS analysis and output results
(none)–saverdnsSave reverse DNS analysis to specified file
(none)–inputfileRead domains from specified file, and use them for analysis
(none)–debugPrint debug information during the analysis module (-a). Prints mostly raw DNS data, familarity with the DIG Linux DNS utility and it’s output is helpful to interpret the debug output
-r–resolversFile with DNS servers to populate as resolvers. File must have only one server IP address per line and only IP addresses are accepted
-q–quietOnly print found domains and/or CNAME mappings. Note errors may be printed as well


  • To list all the basic options and switches use -h switch:

python -h

  • To enumerate subdomains of a specific domain, perform advanced analysis, and save the analysis to a file:

python -d -a –saverdns analysis_file.txt

  • Read subdomains from a file and perform advanced analysis on them:

python -d -a –inputfile subdomains.txt

  • Using -r to populate DNS resolvers from a file (resolvers used with -a analysis module):

python -d -a –inputfile subdomains.txt -r dns_servers.txt

  • To enumerate subdomains of specific domain:

python -d

  • To enumerate subdomains of specific domain and save discovered subdomains to a file:

python -d -o example_hosts.txt

  • To enumerate subdomains of specific domain and show the results in realtime:

python -v -d

  • To enumerate subdomains and enable the bruteforce module:

python -b -d

  • To enumerate subdomains and use specific engines such Google, Yahoo and Virustotal engines

python -e google,yahoo,virustotal -d


Turbolist3r depends on the dnslib, requests, and argparse python modules. The subbrute module is required for bruteforce capability, but Turbolist3r should run without it as long as you don’t invoke bruteforce. Submit a PR or contact me if you have issues.

dnslib Module

The dnslib module can be downloaded from or installed on many systems using:

pip install dnslib

Requests Module

  • Install for Ubuntu/Debian:

sudo apt-get install python-requests

  • Install for Centos/Redhat:

sudo yum install python-requests

  • Install using pip on Linux:

sudo pip install requests

Argparse Module

  • Install for Ubuntu/Debian:

sudo apt-get install python-argparse

  • Install for Centos/Redhat:

sudo yum install python-argparse

  • Install using pip:

sudo pip
install argparse