If you currently have (like Redis or Cloudflare) in place?
Most reputable services will "throttle" or block an IP address after 3 to 5 failed attempts.
: A common tool for security professionals. crunch 6 6 0123456789 -o 6_digit_otp.txt Use code with caution. Copied to clipboard 2. Pre-Made & Optimized Wordlists
Enforce strict expiration windows. For TOTP mechanisms adhering to RFC 6238, codes are valid for only 30 seconds. Even with high-speed automated tools, submitting a significant fraction of a 1,000,000-entry wordlist within 30 seconds over a network is functionally impossible if network-level throttling is active. Moving Beyond SMS to Cryptographic TOTP
But there was a second sheet. Titled used_codes . 6 digit otp wordlist
Implement a strict maximum attempt policy. For instance, after three consecutive incorrect entries of a 6-digit code, the application should lock the specific login session or account entirely, requiring a new OTP generation cycle or manual user verification. IP and Device Fingerprinting
Fixed-width numeric strings padded with leading zeros (e.g., 000001 , 048291 , 999999 ).
6-digit OTP wordlist is a comprehensive set of all 1,000,000 possible numerical combinations (from 000000 to 999999) used for testing the security of one-time password implementations. Core Features Complete Coverage
Lock the account permanently or temporarily after 3-5 failed attempts. If you currently have (like Redis or Cloudflare) in place
with open("6_digit_otp.txt", "w") as f: for i in range(1000000): f.write(f"i:06\n") Use code with caution. Copied to clipboard
A 6-digit OTP wordlist is a sequential or targeted list of numerical combinations ranging from 000000 to 999999 . Unlike standard password wordlists that contain alphanumeric strings, dictionary words, or leaked credentials, an OTP wordlist is purely numeric. Mathematical Scope 10610 to the sixth power (1,000,000 possibilities).
Beyond just blocking the IP, many systems will temporarily freeze the entire user account after repeated failed OTP entries.
Limit users to a maximum of 3 to 5 OTP attempts per session. crunch 6 6 0123456789 -o 6_digit_otp
Relatively small (roughly 6-7 MB), making them easy to generate and use.
If you are a developer, ensuring your 6-digit OTP system is secure involves more than just picking random numbers.
In the world of cybersecurity and digital authentication, the "6-digit OTP" (One-Time Password) is the standard gatekeeper. Whether you are logging into your bank, verifying a social media account, or confirming a wire transfer, those six numbers are usually all that stand between a user and their sensitive data.
112233 was the outlier. No date. Just a lazy sequence. Its user was a 19-year-old who typed it into a “secure voting app” three hours before the election results were hacked.
Since an OTP is restricted to digits (0-9) and a length of 6, the math is straightforward: 10610 to the sixth power (10 to the power of 6) Total Entries: 1,000,000 possibilities
In "Capture The Flag" hacking competitions, participants often encounter simulated environments where they must script a solution to bypass an OTP check.