109.81.126.33 reported for spam
Status
| Service | Status | Updated | Next steps |
|---|---|---|---|
| Anti-Spam | Not in list | Mar 25, 2026 11:39:40 | Get Anti-Spam Plugin or API |
| SpamFireWall | Not in list | Mar 25, 2026 11:39:40 | |
| Security FireWall | Not in list | - | Get Security Plugin |
| Block Lists | Data loading | - | Use via API, Files & DNSBL |
| Type of attacks | Spam | ||
Abuse reports
| There are currently no abuse reports for this email/IP. Report Abuse activity |
Details
| Network | 109.81.126.0/24 parent network: 109.80.0.0/15 |
|---|---|
| Network Spam Rate | – |
| DNS name | 109-81-126-33.rct.o2.cz |
| AS number | 5610 |
| Org name | O2 Czech Republic, a.s. |
| Location | Brno, South Moravian, Czechia |
| IP Geolocation | lat: 49.1953; lon: 16.6016 |
| | |
| Address | - |
| Phone | - |
| Website | o2.cz |
| AS spam rate | 0.59% |
| Websites hosted on 109.81.126.33 | Data loading |
109.81.126.0/24 spam active IP addresses
| # | Address (DNS name) | Detected | Last seen | Attacked sites |
|---|---|---|---|---|
| 1 | 109.81.126.33 (109-81-126-33.rct.o2.cz) | Feb 28, 2026 20:27:26 | Mar 25, 2026 16:39:40 | 9 |
| 2 | 109.81.126.139 (109-81-126-139.rct.o2.cz) | Dec 23, 2025 14:06:14 | Jun 27, 2026 22:04:50 | 3 |
| 3 | 109.81.126.155 (109-81-126-155.rct.o2.cz) | Jun 21, 2024 12:51:38 | Nov 04, 2026 22:48:35 | 4 |
109.81.126.33 spam and brute force activity on date
| # | Date | IP | Frequency |
|---|
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Why is this 109.81.126.33 contacting my website?
This 109.81.126.33 may appear due to bots, crawlers, spam submissions, or automated attacks.
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Is this 109.81.126.33 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 109.81.126.33?
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 109.81.126.33. 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 109.81.126.33 is currently performing various types of spam and security attacks on websites.
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