AbuseIPDB » 51.81.169.203
Whitelisted netblocks are typically owned by trusted entities, such as Google or Microsoft who may use them for search engine spiders. However, these same entities sometimes also provide cloud servers and mail services which are easily abused. Pay special attention when trusting or distrusting these IPs.
51.81.169.203 is an IP address from within our whitelist belonging to the subnet 51.81.169.192/28, which we identify as "Ahrefs Crawler".
IP info including ISP, Usage Type, and Location provided by IPInfo. Updated weekly.
Top Reporter Countries (Last 60 Days)
Example preview
Report Categories (Last 60 Days)
Example previewIP Abuse Reports for 51.81.169.203:
This IP address has been reported a total of 14 times from 9 distinct sources. 51.81.169.203 was first reported on , and the most recent report was . In the last 60 days, the top reporter locations were: Germany with 9 reports; United States of America with 3 reports; Canada with 1 report. The most common categories in these recent reports were: Bad Web Bot 13 times; DDoS Attack 3 times; Exploited Host 3 times; Brute-Force 3 times; Web App Attack 3 times; Other 1 time.
| Reporter | IoA Timestamp (UTC) | Comment | Categories | |
|---|---|---|---|---|
| 🇩🇪 ghostwarriors |
Webpage scraping
|
Brute-Force Bad Web Bot Web App Attack | ||
| 🇩🇪 palzer.IT |
|
Bad Web Bot | ||
| 🇺🇸 SX Communications |
|
DDoS Attack Bad Web Bot Exploited Host | ||
| 🇮🇪 Jim Keir |
2026-09-01 13:03:05 51.81.169.203 Bad bot, blocking Mozilla/5.0
|
Bad Web Bot | ||
| 🇩🇪 rh24 |
|
Bad Web Bot | ||
| 🇩🇪 ghostwarriors |
Webpage scraping
|
Brute-Force Bad Web Bot Web App Attack | ||
| 🇩🇪 ghostwarriors |
Webpage scraping
|
Brute-Force Bad Web Bot Web App Attack | ||
| 🇩🇪 grassau.com |
|
Bad Web Bot | ||
| 🇺🇸 SX Communications |
|
DDoS Attack Bad Web Bot Exploited Host | ||
| 🇩🇪 Hazzard |
(apache-useragents) Failed apache-useragents trigger with match [redacted]): (CF_ENABLE)
|
Bad Web Bot | ||
| 🇺🇸 SX Communications |
|
DDoS Attack Bad Web Bot Exploited Host | ||
| 🇨🇦 Mediashaker |
|
Bad Web Bot | ||
| 🇩🇪 netclix.gr |
|
Port Scan | ||
| 🇩🇪 grassau.com |
|
Bad Web Bot |
Showing 1 to 14 of 14 reports
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