51.9.55.43
Neutral Activity
There is no recent abuse activity, or the IP address is whitelisted.
- ISP
- PlusNet plc.
- Usage Type
- Fixed Line ISP
- ASN
- AS6871
- Hostname(s)
- 43.55.9.51.dyn.plus.net
- Domain Name
- plus.net
- Country
- 🇬🇧 United Kingdom of Great Britain and Northern Ireland
- City
- Chard, England
No reports in the last 60 days
51.9.55.43 has been reported 70 times. The most recent report is from .
The full history is preserved below and remains searchable. A 0% score reflects the absence of recent activity, but this is not a guarantee that earlier reports were invalid. Abuse confidence score decays, naturally, over time, when the abusive activity stops.
Abuse Reports
Total reports
70 from
46 distinct
reporters
First reported
Most recent report
| Reporter | IoA Timestamp (UTC) | Comment | Categories |
|---|---|---|---|
| 🇹🇷 rtbh.com.tr |
list.rtbh.com.tr report: tcp/0
|
Brute-Force | |
| 🇩🇪 Paul Smith |
Email Auth Brute force attack 11/11 in last day
|
Brute-Force | |
| 🇹🇷 rtbh.com.tr |
list.rtbh.com.tr report: tcp/0
|
Brute-Force | |
| 🇫🇷 solution.it |
|
Brute-Force | |
| 🇺🇸 entangled_mongoose |
Failed IMAP authentication with username 'user_sha_a3180@domain_sha_023c5'.
|
Hacking Brute-Force | |
| Anonymous |
Authentication failure
|
Brute-Force | |
| Anonymous |
SMTP AUTH 51.9.55.43 (SMTP_LOGIN_ATTEMPT)
|
Brute-Force | |
| 🇭🇺 Lacika555 |
RdpGuard detected brute-force attempt on SMTP
|
Brute-Force | |
| 🇮🇩 xveil |
2026-02-06T16:04:54.535087 mail-honeypot postfix/submission/smtpd[3322]: warning: 43.55.9.51.dyn.plus.net[51.9.55.43]: SASL LOGIN authentication failed: authentication failure
...
|
Brute-Force | |
| 🇺🇸 shaunc |
Feb 5 23:55:45 mailman postfix/smtpd[30037]: warning: 43.55.9.51.dyn.plus.net[51.9.55.43]: SASL LOGIN authentication failed: authentication failure
|
Brute-Force | |
| 🇹🇭 thaizone.com |
Mail credential brute-force attack (SM5) #2
|
Email Spam Brute-Force | |
| 🇫🇷 ingroscart.it |
(smtpauth) Failed SMTP AUTH login from 51.9.55.43 (GB/United Kingdom/43.55.9.51.dyn.plus.net)
|
Brute-Force | |
| 🇩🇪 Paul Smith |
Email Auth Brute force attack 5/5 in last day
|
Brute-Force | |
| 🇮🇩 xveil |
2026-02-06T07:00:39.363071 mail-honeypot postfix/submission/smtpd[7494]: warning: 43.55.9.51.dyn.plus.net[51.9.55.43]: SASL LOGIN authentication failed: authentication failure
...
|
Brute-Force | |
| 🇩🇪 kkeyser |
warning: 43.55.9.51.dyn.plus.net[51.9.55.43]: SASL LOGIN authentication failed: authentication failure
|
Brute-Force |
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