This repository contains a Python script designed to check a range of IP addresses against multiple DNS-based blackhole lists (DNSBLs). DNSBLs are used to identify and block IP addresses involved in sending spam and other malicious activities. This script helps network administrators and email server managers ensure their IP addresses are not listed on these blacklists, which can affect email deliverability and network reputation.
- IP Range Scanning: Checks a specified range of IP addresses within a given subnet against multiple DNSBL providers.
- Customizable DNSBL Providers: Easily modify the list of DNSBL providers to include or exclude specific lists.
- Colored Output: Provides color-coded results for better readability:
- Green: IP not listed
- Red: IP listed
- Yellow: Query timeout
- Error Handling: Gracefully handles DNS resolution errors, timeouts, and other exceptions.
- Command-Line Arguments: Accepts subnet range as a command-line argument in CIDR notation.
- Python 3.x
dnspythonlibrarycoloramalibrary
Install the required libraries using pip:
pip install dnspython coloramaClone the repository and navigate to the directory:
git clone https://github.com/mcujba/dnsbl-checker.git
cd dnsbl-checkerRun the script with the desired subnet:
python3 dnsbl-checker.py 185.226.106.0/24This command will check all IP addresses in the range 185.226.106.1 to 185.226.106.255 against the specified DNSBL providers and display the results with appropriate color codes.
To customize the list of DNSBL providers, edit the dnsbl_providers list in the script:
dnsbl_providers = [
'zen.spamhaus.org',
'bl.spamcop.net',
'b.barracudacentral.org',
'cbl.abuseat.org',
'pbl.spamhaus.org',
'sbl.spamhaus.org'
]Add or remove DNSBL providers as needed.
185.226.106.1 is not listed in zen.spamhaus.org
185.226.106.1 is listed in bl.spamcop.net: 127.0.0.2
185.226.106.1 timeout while querying b.barracudacentral.org
...