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2604:a940:300:5b6:0:10::
Neutral Activity
There is no recent abuse activity, or the IP address is whitelisted.
Whitelisted Subnet
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.
IPv6 SLAAC Note
Public IPv6 addresses may implement the SLAAC
privacy extension. With SLAAC, the interface identifier is randomly generated. SLAAC also implements a
configurable time out, so that the original IPv6 interface addresses will be discarded in favor of a new
interface identifier.
2604:a940:300:5b6:0:10:: is an IP address from within our whitelist belonging to the subnet
2604:a940:300:5b6::/64,
which we identify as "Cortex Xpanse".
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Top Reporter Countries (Last 60 Days)
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IP Abuse Reports for 2604:a940:300:5b6:0:10:::
This IP address has been reported a total of
397
times from
13 distinct
sources.
2604:a940:300:5b6:0:10:: was first reported on
, and the most recent report was
.
In the last 60 days, the top reporter locations were:
United States of America
with 179
reports;
Germany
with 43
reports;
Netherlands
with 2
reports.
The most common categories in these recent reports were:
Port Scan
208
times;
Brute-Force
45
times;
Web App Attack
5
times;
Bad Web Bot
2
times;
Email Spam
2
times;
Other
4
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.
Blocked by UFW (TCP on 1521)
Source port: 49685
Packet length: 60
This report (for 2604:a940:0300:0 ...
show moreBlocked by UFW (TCP on 1521)
Source port: 49685
Packet length: 60
This report (for 2604:a940:0300:05b6:0000:0010:0000:0000) was generated by:
https://github.com/sefinek/UFW-AbuseIPDB-Reporter
show less
Blocked by UFW (TCP on 7070)
Source port: 55630
Packet length: 60
This report (for 2604:a940:0300:0 ...
show moreBlocked by UFW (TCP on 7070)
Source port: 55630
Packet length: 60
This report (for 2604:a940:0300:05b6:0000:0010:0000:0000) was generated by:
https://github.com/sefinek/UFW-AbuseIPDB-Reporter
show less
Blocked by UFW (TCP on 110)
Source port: 52634
Packet length: 60
This report (for 2604:a940:0300:05 ...
show moreBlocked by UFW (TCP on 110)
Source port: 52634
Packet length: 60
This report (for 2604:a940:0300:05b6:0000:0010:0000:0000) was generated by:
https://github.com/sefinek/UFW-AbuseIPDB-Reporter
show less
Blocked by UFW (TCP on 5906)
Source port: 50120
Packet length: 60
This report (for 2604:a940:0300:0 ...
show moreBlocked by UFW (TCP on 5906)
Source port: 50120
Packet length: 60
This report (for 2604:a940:0300:05b6:0000:0010:0000:0000) was generated by:
https://github.com/sefinek/UFW-AbuseIPDB-Reporter
show less
Blocked by UFW (TCP on 2095)
Source port: 49571
Packet length: 60
This report (for 2604:a940:0300:0 ...
show moreBlocked by UFW (TCP on 2095)
Source port: 49571
Packet length: 60
This report (for 2604:a940:0300:05b6:0000:0010:0000:0000) was generated by:
https://github.com/sefinek/UFW-AbuseIPDB-Reporter
show less
2026-09-06T08:48:28.061734+02:00 srv02 postfix/submission/smtpd[2802303]: improper command pipelinin ...
show more2026-09-06T08:48:28.061734+02:00 srv02 postfix/submission/smtpd[2802303]: improper command pipelining after CONNECT from unknown[2604:a940:300:5b6:0:10::]: GET / HTTP/1.1\r\nHost: [2a01:4f8:171:111b::7]:587\r\nUser-Agent: Hello from Palo Alto Networks, find ou
...
show less
Blocked by UFW (TCP on 990)
Source port: 56687
Packet length: 60
This report (for 2604:a940:0300:05 ...
show moreBlocked by UFW (TCP on 990)
Source port: 56687
Packet length: 60
This report (for 2604:a940:0300:05b6:0000:0010:0000:0000) was generated by:
https://github.com/sefinek/UFW-AbuseIPDB-Reporter
show less
Blocked by UFW (TCP on 42713)
Source port: 56474
Packet length: 60
This report (for 2604:a940:0300: ...
show moreBlocked by UFW (TCP on 42713)
Source port: 56474
Packet length: 60
This report (for 2604:a940:0300:05b6:0000:0010:0000:0000) was generated by:
https://github.com/sefinek/UFW-AbuseIPDB-Reporter
show less
Blocked by UFW (TCP on 82)
Source port: 53983
Packet length: 60
This report (for 2604:a940:0300:05b ...
show moreBlocked by UFW (TCP on 82)
Source port: 53983
Packet length: 60
This report (for 2604:a940:0300:05b6:0000:0010:0000:0000) was generated by:
https://github.com/sefinek/UFW-AbuseIPDB-Reporter
show less
Blocked by UFW (TCP on 6363)
Source port: 55632
Packet length: 60
This report (for 2604:a940:0300:0 ...
show moreBlocked by UFW (TCP on 6363)
Source port: 55632
Packet length: 60
This report (for 2604:a940:0300:05b6:0000:0010:0000:0000) was generated by:
https://github.com/sefinek/UFW-AbuseIPDB-Reporter
show less
2026-09-05T07:35:36.050888+02:00 srv02 postfix/postscreen[2012878]: HANGUP after 1.3 from [2604:a940 ...
show more2026-09-05T07:35:36.050888+02:00 srv02 postfix/postscreen[2012878]: HANGUP after 1.3 from [2604:a940:300:5b6:0:10::]:61810 in tests after SMTP handshake
2026-09-05T07:35:42.705809+02:00 srv02 postfix/postscreen[2012878]: HANGUP after 1.3 from [2604:a940:300:5b6:0:10::]:58566 in tests after SMTP handshake
...
show less
Blocked by UFW (TCP on 9983)
Source port: 52273
Packet length: 60
This report (for 2604:a940:0300:0 ...
show moreBlocked by UFW (TCP on 9983)
Source port: 52273
Packet length: 60
This report (for 2604:a940:0300:05b6:0000:0010:0000:0000) was generated by:
https://github.com/sefinek/UFW-AbuseIPDB-Reporter
show less
