5.16.78.237
Neutral Activity
There is no recent abuse activity, or the IP address is whitelisted.
- ISP
- JSC ER-Telecom Holding Saint-Petersburg branch
- Usage Type
- Fixed Line ISP
- ASN
- AS51570
- Hostname(s)
- 5x16x78x237.dynamic.spb.ertelecom.ru
- Domain Name
- ertelecom.ru
- Country
- 🇷🇺 Russian Federation
- City
- Saint Petersburg, St.-Petersburg
No reports in the last 60 days
5.16.78.237 has been reported 77 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
77 from
58 distinct
reporters
First reported
Most recent report
| Reporter | IoA Timestamp (UTC) | Comment | Categories |
|---|---|---|---|
| Anonymous |
2026-07-19T07:12:32.754236 biopolis.pcconsultant.it postfix/smtpd[599965]: warning: unknown[5.16.78.237]: SASL LOGIN authentication failed: authentication failure, sasl_username=postmaster
...
|
Brute-Force | |
| 🇵🇱 bmino.pl |
Autoban IP(2): 5.16.78.237 - Hostname: JSC \ - City: St Petersburg - Region: St.-Petersburg - Country: Russia - Location: 59.9417,30.3096 - Organization: JSC \ - failed attempts.
|
Brute-Force | |
| 🇩🇪 EGP Abuse Dept |
SMTP AUTH attack
|
Brute-Force | |
| Anonymous |
IMAP password guessing
|
Brute-Force | |
| 🇺🇸 Brian Minton |
|
Brute-Force | |
| 🇫🇷 Provost-info |
mail server - multiple authentication attempt with unknown username or bad password
|
Brute-Force Spoofing | |
| 🇩🇪 mnpx |
SMTP brute forcing (2× over 1h:07m); first seen here 2026-07-19T01:05Z
|
Brute-Force | |
| 🇸🇮 basing |
2026-07-19 02:21:06 ahl SASL PLAIN auth failed: rhost=5.16.78.237...
|
Brute-Force | |
| 🇩🇪 singertc |
2026-07-19 02:19:55 login_server authenticator failed for ([192.252.220.90]) [5.16.78.237]: 535 Incorrect authentication data ([email protected])
...
|
Brute-Force Hacking | |
| Anonymous |
Unauthorized SSH login attempts
|
Brute-Force SSH | |
| 🇩🇪 FeG Deutschland |
Mail: - login with unknown user - bruteforce
|
Brute-Force | |
| 🇳🇱 Peter Touw |
exim1 - login authenticator failed for ([49.124.152.27]) [5.16.78.237]: 535 Incorrect authentication data
|
Brute-Force | |
| 🇺🇸 ras07 |
Brute force SMTP/IMAP login attempts.
|
Brute-Force | |
| 🇨🇦 polycoda |
📡 Port scan
|
Hacking Web App Attack | |
| 🇩🇪 localhost-admin |
Unauthorized connection attempt detected, SMTP Brute-Force
|
Brute-Force |
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