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AbuseIPDB » 5.26.208.221

5.26.208.221 was found in our database!

This IP was reported 444 times. Confidence of Abuse is 100%: ?

100%

ISP	TURKCELL INTERNET
Usage Type	Fixed Line ISP
ASN	AS16135
Domain Name	turkcell.com.tr
Country	🇹🇷 Turkey
City	Istanbul, Istanbul

IP info including ISP, Usage Type, and Location provided by IPInfo. Updated weekly.

Report 5.26.208.221

Whois 5.26.208.221

IP Abuse Reports for 5.26.208.221:

This IP address has been reported a total of 444 times from 134 distinct sources. 5.26.208.221 was first reported on September 25th 2025, and the most recent report was 52 minutes ago.

Recent Reports: We have received reports of abusive activity from this IP address within the last week. It is potentially still actively engaged in abusive activities.

Reporter	IoA Timestamp (UTC)	Comment	Categories
Anonymous	2026-06-16 08:22:24 (52 minutes ago)	Jun 16 00:00:39 mx1 postfix/smtps/smtpd[29717]: warning: unknown[5.26.208.221]: SASL LOGIN authentic ... show more Jun 16 00:00:39 mx1 postfix/smtps/smtpd[29717]: warning: unknown[5.26.208.221]: SASL LOGIN authentication failed: UGFzc3dvcmQ6 Jun 16 08:44:01 mx1 postfix/smtpd[5089]: warning: unknown[5.26.208.221]: SASL LOGIN authentication failed: UGFzc3dvcmQ6 Jun 16 10:22:24 mx1 postfix/smtps/smtpd[25772]: warning: unknown[5.26.208.221]: SASL LOGIN authentication failed: UGFzc3dvcmQ6 ... show less	Brute-Force
🇺🇦 MakselPr	2026-06-16 06:47:22 (2 hours ago)	Jun 16 09:14:59 mail postfix/smtps/smtpd[452080]: warning: unknown[5.26.208.221]: SASL LOGIN authent ... show more Jun 16 09:14:59 mail postfix/smtps/smtpd[452080]: warning: unknown[5.26.208.221]: SASL LOGIN authentication failed: (reason unavailable), [email protected] Jun 16 09:47:21 mail postfix/smtps/smtpd[453355]: warning: unknown[5.26.208.221]: SASL LOGIN authentication failed: (reason unavailable), [email protected] ... show less	Brute-Force
🇩🇪 kreativstrecke	2026-06-16 06:40:34 (2 hours ago)	2026-06-16T08:40:33.147396+02:00 srv02 postfix/submission/smtpd[1510621]: warning: unknown[5.26.208. ... show more 2026-06-16T08:40:33.147396+02:00 srv02 postfix/submission/smtpd[1510621]: warning: unknown[5.26.208.221]: SASL LOGIN authentication failed: (reason unavailable), sasl_username=m.reuter-boensch 2026-06-16T08:40:33.655660+02:00 srv02 postfix/submission/smtpd[1510621]: lost connection after AUTH from unknown[5.26.208.221] 2026-06-16T08:40:33.655792+02:00 srv02 postfix/submission/smtpd[1510621]: disconnect from unknown[5.26.208.221] ehlo=2 starttls=1 auth=0/1 commands=3/4 ... show less	Brute-Force
🇩🇪 ut-addicted.com	2026-06-16 05:28:03 (3 hours ago)	Jun 16 07:28:02 www postfix/smtpd\[15640\]: lost connection after AUTH from unknown\[5.26.208.221\]	Brute-Force Hacking
🇩🇪 Paul Smith	2026-06-16 03:56:56 (5 hours ago)	Email Auth Brute force attack 2/2 in last day	Brute-Force
🇨🇿 lp	2026-06-15 22:52:17 (10 hours ago)	Email account brute force: 1 attempts were recorded from 5.26.208.221 2026-06-15T23:52:07+02:00 warn ... show more Email account brute force: 1 attempts were recorded from 5.26.208.221 2026-06-15T23:52:07+02:00 warning: unknown[5.26.208.221]: SASL LOGIN authentication failed: authentication failure, [email protected] show less	Brute-Force
🇭🇺 dd3589	2026-06-15 21:15:01 (12 hours ago)	2026-06-15T23:13:42+02:00 <masked> exim[133194]: fixed_login authenticator failed for ([68.71.249.15 ... show more 2026-06-15T23:13:42+02:00 <masked> exim[133194]: fixed_login authenticator failed for ([68.71.249.154]) [5.26.208.221]: 535 Incorrect authentication data (set_id=szg) show less	Brute-Force
Anonymous	2026-06-15 20:15:50 (12 hours ago)	SMTP brute force - auth failed	Brute-Force Exploited Host
🇩🇪 Paul Smith	2026-06-15 03:56:41 (1 day ago)	Email Auth Brute force attack 1/1 in last day	Brute-Force
🇺🇸 Brian Minton	2026-06-14 12:17:11 (1 day ago)	2026-06-13 15:40:12 no host name found for IP address 5.26.208.221 2026-06-13 15:40:26 login_saslaut ... show more 2026-06-13 15:40:12 no host name found for IP address 5.26.208.221 2026-06-13 15:40:26 login_saslauthd_server authenticator failed for (189-108-96-183.customer.tdatabrasil.net.br) [5.26.208.221]: 535 Incorrect authentication data (set_id=mail) 2026-06-14 07:17:10 no host name found for IP address 5.26.208.221 ... show less	Brute-Force
🇩🇪 chris_yooo	2026-06-14 12:12:06 (1 day ago)	Jun 14 14:12:04 isp postfix/smtps/smtpd[366532]: warning: unknown[5.26.208.221]: SASL LOGIN authenti ... show more Jun 14 14:12:04 isp postfix/smtps/smtpd[366532]: warning: unknown[5.26.208.221]: SASL LOGIN authentication failed: (reason unavailable), [email protected] Jun 14 14:12:05 isp postfix/smtps/smtpd[366532]: lost connection after AUTH from unknown[5.26.208.221] ... show less	Spoofing Brute-Force
🇩🇪 DocNetzwerk	2026-06-14 11:07:04 (1 day ago)	(smtpauth) Failed SMTP AUTH login from 5.26.208.221 (TR/Türkiye/-)	Brute-Force
🇩🇪 FeG Deutschland	2026-06-14 10:52:09 (1 day ago)	Mail: - login with unknown user - bruteforce	Brute-Force
🇬🇧 killian7603	2026-06-14 10:22:58 (1 day ago)	Logon Policy Violation	Email Spam Spoofing Brute-Force
🇩🇪 Paul Smith	2026-06-14 03:53:16 (2 days ago)	Email Auth Brute force attack 2/2 in last day	Brute-Force

Showing 1 to 15 of 444 reports

Think this IP has been falsely reported? You may request to have the associated reports reviewed and removed. Request Takedown 🚩

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