A complete list of all 10,000,000 possible codes would be huge, and testing it without restrictions might take too long. An attacker can dramatically speed up the process by starting with a much smaller, "smart" list containing the most common and predictable codes.
A fast, parallelized network login cracker that can target specific authentication protocols or custom web forms. Vulnerabilities Exposed by OTP Brute-Forcing
Thus, a free wordlist is only useful in – e.g., you have extracted a hashed OTP from a database and want to crack it offline using hashcat or John the Ripper.
Because downloading pre-made text files from unverified online sources carries malware risks, security researchers typically generate their own lists locally. You can create a complete, free 1-million-row OTP list in seconds using basic command-line tools or programming languages. Method 1: Using Python 6 digit otp wordlist free
Verifying if an account remains open after multiple consecutive failed OTP inputs.
One-Time Passwords (OTPs) are the cornerstone of modern digital security. Whether you are logging into your bank, verifying a new device, or accessing secure company data, a 6-digit numeric code is often the final barrier against unauthorized access.
: For a compressed version, check the 6-digit-pin-list.txt.gz on GitHub. How to Generate Your Own A complete list of all 10,000,000 possible codes
While a wordlist contains the correct code, modern security measures make brute-forcing OTPs extremely difficult: Rate Limiting: Most systems (like those from Deutsche Bank ) lock an account after 3–5 failed attempts. Expiration: OTPs are temporary and usually expire within 30 to 60 seconds Dynamic Generation: Services like Authenticator Apps
A standard brute-force tool runs sequentially from 000000 to 999999 . However, human behavioral patterns show that when users are allowed to choose their own 6-digit PINs, certain combinations appear with massive statistical frequency.
Temporarily lock the user account or require a CAPTCHA challenge after multiple failed validation attempts to stop automated scripts entirely. Safety and Legal Notice Vulnerabilities Exposed by OTP Brute-Forcing Thus, a free
A premier web vulnerability scanner that maps payloads to login parameters. Testers load the wordlist into the payload options to systematically check the OTP input field.
Some popular sources for 6-digit OTP wordlists include:
Technically, a 6-digit wordlist is just a text file containing 1 million lines of numbers. It starts at 000000 and ends at 999999 .
Because it is purely mathematical, the total number of combinations is finite and relatively small compared to alphanumeric passwords. The Mathematics of a 6-Digit Wordlist unique codes. File Size (Plain Text): Approximately 7 Megabytes (MB).
The dirty secret is that brute-forcing a 6-digit OTP over the internet is almost impossible against a properly configured system. Here’s why: