This IP address has been reported a total of
64
times from
14 distinct
sources.
52.103.13.3 was first reported on
, and the most recent report was
.
In the last 60 days, the top reporter locations were:
Switzerland
with 1
report;
Guam
with 1
report.
The only category in these recent reports was:
Email Spam
2
times.
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.
Spam email received in Outlook.com Junk Email folder.
Likely originating IP: 52.103.13.3
Origin sour ...
show moreSpam email received in Outlook.com Junk Email folder.
Likely originating IP: 52.103.13.3
Origin source header: Authentication-Results
Origin evidence: sender IP is 52.103.13.3
ReceivedDateTime: 10/23/2026 21:48:31
InternetMessageId: <CH3PR10MB669273647FAE88E3559D1F1693642@CH3PR10MB6692.namprd10.prod.outlook.com>
Selection reason: Selected explicit public sender IP from Authentication-Results
Known-good relay/IP/CIDR filtering was enabled.
Reporting mode: one report per qualifying Junk Email message
Subject: You’re invited to look around my profile and learn more about me.
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Spam email received in Outlook.com Junk Email folder.
Likely originating IP: 52.103.13.3
Origin sour ...
show moreSpam email received in Outlook.com Junk Email folder.
Likely originating IP: 52.103.13.3
Origin source header: Authentication-Results
Origin evidence: sender IP is 52.103.13.3
ReceivedDateTime: 07/03/2026 03:20:13
InternetMessageId: <SJ0PR18MB4495D3B78BB0CE86E5B5A10C8CF42@SJ0PR18MB4495.namprd18.prod.outlook.com>
Selection reason: Selected explicit public sender IP from Authentication-Results
Known-good relay/IP/CIDR filtering was enabled.
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SPAM COP From: Vision Health- Eye Care Research --------- <[email protected]>
from DM1 ...
show moreSPAM COP From: Vision Health- Eye Care Research --------- <[email protected]>
from DM1PR04CU001.outbound.protection.outlook.com ([52.103.13.3]) by cmsmtp with ESMTP id oOcfvHtEd3QMVoOcgvDMfn
from DS4PR20MB994558.namprd20.prod.outlook.com (2603:10b6:8:319::8) by SJ5PPFFEC2C767F.namprd20.prod.outlook.com (2603:10b6:a0f:fc02::aaf) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9587.13
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Phishing
Email Spam
Port Scan
Hacking
Spoofing
Brute-Force
ICS Labs identified malicious URL in email communication from IP 52.103.13.3, Subject: Parcel delay ...
show moreICS Labs identified malicious URL in email communication from IP 52.103.13.3, Subject: Parcel delay notification Tracking Number: 21502808
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Spoofing attempts and mass spam have been detected. Blocked by ASSP anti-spam. Reason: DenyStrict. B ...
show moreSpoofing attempts and mass spam have been detected. Blocked by ASSP anti-spam. Reason: DenyStrict. Block attempts: 1.
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Spoofing attempts and mass spam have been detected. Blocked by ASSP anti-spam. Reason: DenyStrict. B ...
show moreSpoofing attempts and mass spam have been detected. Blocked by ASSP anti-spam. Reason: DenyStrict. Block attempts: 2.
show less
