TXTChecker

TXTChecker is a tool designed to check domains for specific TXT records (such as SPF records) stored in DNS. It can generate random domain names or use a provided word list to form domain names with specified TLDs. The tool queries DNS servers for TXT records and identifies domains with the specified TXT record.

Install

git clone https://github.com/hitem/txtchecker.git
cd txtchecker
python3 .\txtchecker.py -h

Usage

> python3 .\txtchecker.py [OPTIONS]
> python3 .\txtchecker.py -h [--help]

Options

-l, --list: Path to the word list file.
-w, --workers: Number of concurrent threads (default: 10).
-a, --auto: Enable auto mode for random domain generation (3-8 character)
-t, --time: Run time in seconds for auto mode (used together with -a for time limited run).
-d, --dns: DNS server to use for queries (required).
-x, --txt: TXT record to look for (required).
--tlds: Comma-separated list of TLDs to use (default: .com,.se,.no,.dk).

Dependencies

The tool requires the following Python dependencies:

• dnspython
• colorama
• unidecode

To install these dependencies, run:

pip install dnspython colorama unidecode

How It Works

1. Initialization: The tool initializes dependencies and parses command-line arguments.
2. Domain Generation:
   A. In auto mode, generates random domain names of lengths between 3 and 8 characters.
   B. If a word list is provided, generates domain names by appending TLDs to words in the list.
3. DNS Queries: Concurrently queries the specified DNS server for TXT records of the generated domains.
4. TXT Record Check: Compares the TXT records to the specified TXT record.
5. Real-time Updates: Displays the number of processed domains and elapsed time in real-time
6. Output: Prints domains with the specified TXT record and saves them to successful_domains.txt.