| Rank | Code | Reason | |------|--------|----------------------------------| | 1 | 123456 | Sequential pattern | | 2 | 111111 | Repeated digit | | 3 | 000000 | All zeros | | 4 | 123123 | Repeated pattern | | 5 | 112233 | Stepped pattern | | 6 | 789012 | End of row on keypad | | 7 | 654321 | Reverse sequential | | 8-20 | Birthdays (e.g., 010190) | MMDDYY format |
Introduction In the world of digital security, the six-digit One-Time Password (OTP) has become a universal standard. From Google Authenticator to SMS-based bank logins, the 6-digit code acts as the second layer of defense in two-factor authentication (2FA). But for security researchers and penetration testers, there exists a niche but critical question: Where can I find a 6 digit OTP wordlist free of charge, and is it even ethical to use one? 6 digit otp wordlist free
If you’ve typed this keyword into a search engine, you are likely either a beginner in cybersecurity, a student learning about brute-force attacks, or a professional tester auditing an application. This article will explore the reality of 6-digit OTP wordlists, how they are generated, why most “free” lists are useless, and the legal boundaries you must never cross. A wordlist (or dictionary file) is a text file containing a sequence of potential passwords or codes. In the context of 6-digit OTPs, a wordlist would contain strings like: If you’ve typed this keyword into a search
# Generate all MMDDYY combinations (birthdays) for month in range(1,13): for day in range(1,32): for year in range(0,100): print(f"month:02dday:02dyear:02d") If you have a legitimate target (your own lab or authorized test), here are tools that can use your free wordlist: 1. Hydra (Network Login Brute-Forcing) hydra -l username -P 6digit.txt target.com http-post-form "/login:user=^USER^&pass=^PASS^:F=incorrect" 2. Burp Suite Intruder Load your wordlist as a payload position in the OTP field. Use attack mode “Sniper”. This is ideal for testing rate limits. 3. Ncrack (RDP, SSH, Telnet) ncrack -p 3389 --user admin -P 6digit.txt target-ip 4. Hashcat (Offline Cracking) For a 6-digit OTP hash (e.g., from a stolen database): In the context of 6-digit OTPs, a wordlist
A of just 10,000 common patterns (available in SecLists) will successfully crack 15-20% of poorly chosen 6-digit OTPs in a local offline attack. That’s much more efficient than trying all 1 million.
Note: This is not the full 1M list but a curated list of ~10,000 likely PINs (e.g., birthdays, repeating digits). Instead of a wordlist, use a mask in Hashcat:
hashcat -m 0 -a 3 hash.txt ?d?d?d?d?d?d No wordlist needed – mask attack is faster. Q1: Is downloading a 6 digit OTP wordlist free illegal? A: No – possessing the file is not illegal. Using it to attempt unauthorized access to a system you do not own or have explicit permission to test is illegal . Q2: Can I use a 6-digit wordlist on Instagram/Gmail/Bank of America? A: Technically, you can try. But all major platforms have rate limiting, CAPTCHA, and account lockouts. You will not succeed, and your IP will be blacklisted. Q3: What’s the file size of a full 6-digit wordlist? A: Approximately 7.6 MB as plain text. Zipped, it’s about 1.2 MB. Q4: Are there any pre-made “top 100” OTP wordlists? A: Yes. Search GitHub for “common pins” or “top otp”. The SecLists project includes top-100-otp.txt . Conclusion: Use Knowledge, Not Just Lists Searching for a “6 digit OTP wordlist free” is a sign that you are curious about authentication security. That curiosity is valuable – but only if channeled ethically. The reality is that you rarely need a pre-made list. Generating one is trivial, and against modern systems, a raw brute-force attack with a full million-entry wordlist will almost always fail due to rate limiting.