172.121.91.51 reported for spam
Status
| Service | Status | Updated | Next steps |
|---|---|---|---|
| Anti-Spam | Blacklisted | Oct 01, 2026 15:57:09 | Get Anti-Spam Plugin or API |
| SpamFireWall | Blacklisted | Oct 01, 2026 15:57:09 | |
| Security FireWall | Not in list | - | Get Security Plugin |
| Block Lists | Data loading | - | Sign Up for API, Files, DNSBL & Online Access |
| Type of attacks | Spam | ||
Abuse reports
| There are currently no abuse reports for this email/IP. Report Abuse activity |
Details
| Network | 172.121.88.0/22 |
|---|---|
| Network Spam Rate | 42% |
| DNS name | - |
| AS number | 398781 |
| Org name | OCULUS NETWORKS INC |
| Location | United States |
| IP Geolocation | lat: 37.751; lon: -97.822 |
| Address | - |
| Phone | - |
| Website | gmail.com |
| AS spam rate | 40.54% |
| Websites hosted on 172.121.91.51 | Data loading |
172.121.88.0/22 spam active IP addresses
| # | Address (DNS name) | Detected | Last seen | Attacked sites |
|---|---|---|---|---|
| 1 | 172.121.90.214 | Dec 30, 2025 23:53:42 | Oct 02, 2026 08:10:20 | 6 |
| 2 | 172.121.89.202 | Jan 02, 2026 14:08:26 | Oct 02, 2026 08:05:35 | 4 |
| 3 | 172.121.91.136 | Dec 28, 2025 13:09:07 | Oct 02, 2026 07:48:30 | 5 |
| 4 | 172.121.90.225 | Dec 31, 2025 17:45:07 | Oct 02, 2026 07:47:50 | 4 |
| 5 | 172.121.90.204 | Jan 06, 2026 08:05:04 | Oct 02, 2026 07:47:21 | 5 |
| 6 | 172.121.90.222 | Dec 31, 2025 01:50:24 | Oct 02, 2026 07:40:25 | 6 |
| 7 | 172.121.89.1 | Dec 16, 2025 10:54:54 | Oct 02, 2026 07:27:58 | 5 |
| 8 | 172.121.91.131 | Dec 30, 2025 21:50:58 | Oct 02, 2026 06:34:24 | 6 |
| 9 | 172.121.90.228 | Dec 31, 2025 03:18:16 | Oct 02, 2026 06:23:23 | 5 |
| 10 | 172.121.91.158 | Dec 28, 2025 18:26:40 | Oct 02, 2026 06:19:07 | 4 |
172.121.91.51 spam and brute force activity on date
| # | Date | IP | Frequency |
|---|
Data loading
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Why is this 172.121.91.51 contacting my website?
This 172.121.91.51 may appear due to bots, crawlers, spam submissions, or automated attacks.
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Is this 172.121.91.51 safe?
It depends on the IP address status. If it is green and marked as "Not in lists", it is considered safe. If it is "Blacklisted" and shown in red, it means the IP has been involved in abusive activity such as spam, phishing, scam attacks, password brute-force attempts, or hacking attempts.
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How do I block 172.121.91.51?
Use one of our Anti-Spam plugins, the Security plugin, the Anti-Spam API, or the Block Lists API. If you are not sure which option to choose, please contact our support team: https://cleantalk.org/my/support/open
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Is this a bot or hacker?
It depends on the activity of the 172.121.91.51. If the Anti-Spam or Security plugins stop the attacks, it is most likely a bot. If they do not stop them, there is a high probability that it is a human attacker.
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What does "Blacklisted" mean?
It means the 172.121.91.51 is currently performing various types of spam and security attacks on websites.
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