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:f:: is an IP address from within our whitelist belonging to the subnet
2604:a940:300:5b6::/64,
which we identify as "Cortex Xpanse".
This IP address has been reported a total of
499
times from
11 distinct
sources.
2604:a940:300:5b6:0:f:: 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 152
reports;
Germany
with 53
reports;
Netherlands
with 2
reports.
The most common categories in these recent reports were:
Port Scan
187
times;
Brute-Force
54
times;
Web App Attack
6
times;
SSH
2
times;
Email Spam
2
times;
Other
5
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 88)
Source port: 51044
Packet length: 60
This report (for 2604:a940:0300:05b ...
show moreBlocked by UFW (TCP on 88)
Source port: 51044
Packet length: 60
This report (for 2604:a940:0300:05b6:0000:000f:0000:0000) was generated by:
https://github.com/sefinek/UFW-AbuseIPDB-Reporter
show less
Blocked by UFW (TCP on 8081)
Source port: 50347
Packet length: 60
This report (for 2604:a940:0300:0 ...
show moreBlocked by UFW (TCP on 8081)
Source port: 50347
Packet length: 60
This report (for 2604:a940:0300:05b6:0000:000f:0000:0000) was generated by:
https://github.com/sefinek/UFW-AbuseIPDB-Reporter
show less
Blocked by UFW (TCP on 56222)
Source port: 53669
Packet length: 60
This report (for 2604:a940:0300: ...
show moreBlocked by UFW (TCP on 56222)
Source port: 53669
Packet length: 60
This report (for 2604:a940:0300:05b6:0000:000f:0000:0000) was generated by:
https://github.com/sefinek/UFW-AbuseIPDB-Reporter
show less
Blocked by UFW (TCP on 3389)
Source port: 55130
Packet length: 60
This report (for 2604:a940:0300:0 ...
show moreBlocked by UFW (TCP on 3389)
Source port: 55130
Packet length: 60
This report (for 2604:a940:0300:05b6:0000:000f:0000:0000) was generated by:
https://github.com/sefinek/UFW-AbuseIPDB-Reporter
show less
Blocked by UFW (TCP on 5432)
Source port: 49942
Packet length: 60
This report (for 2604:a940:0300:0 ...
show moreBlocked by UFW (TCP on 5432)
Source port: 49942
Packet length: 60
This report (for 2604:a940:0300:05b6:0000:000f:0000:0000) was generated by:
https://github.com/sefinek/UFW-AbuseIPDB-Reporter
show less
Blocked by UFW (TCP on 2078)
Source port: 54175
Packet length: 60
This report (for 2604:a940:0300:0 ...
show moreBlocked by UFW (TCP on 2078)
Source port: 54175
Packet length: 60
This report (for 2604:a940:0300:05b6:0000:000f:0000:0000) was generated by:
https://github.com/sefinek/UFW-AbuseIPDB-Reporter
show less
Blocked by UFW (TCP on 8081)
Source port: 52909
Packet length: 60
This report (for 2604:a940:0300:0 ...
show moreBlocked by UFW (TCP on 8081)
Source port: 52909
Packet length: 60
This report (for 2604:a940:0300:05b6:0000:000f:0000:0000) was generated by:
https://github.com/sefinek/UFW-AbuseIPDB-Reporter
show less
Blocked by UFW (TCP on 8880)
Source port: 50780
Packet length: 60
This report (for 2604:a940:0300:0 ...
show moreBlocked by UFW (TCP on 8880)
Source port: 50780
Packet length: 60
This report (for 2604:a940:0300:05b6:0000:000f:0000:0000) was generated by:
https://github.com/sefinek/UFW-AbuseIPDB-Reporter
show less
Blocked by UFW (TCP on 18080)
Source port: 55608
Packet length: 60
This report (for 2604:a940:0300: ...
show moreBlocked by UFW (TCP on 18080)
Source port: 55608
Packet length: 60
This report (for 2604:a940:0300:05b6:0000:000f:0000:0000) was generated by:
https://github.com/sefinek/UFW-AbuseIPDB-Reporter
show less
Blocked by UFW (TCP on 1200)
Source port: 54215
Packet length: 60
This report (for 2604:a940:0300:0 ...
show moreBlocked by UFW (TCP on 1200)
Source port: 54215
Packet length: 60
This report (for 2604:a940:0300:05b6:0000:000f:0000:0000) was generated by:
https://github.com/sefinek/UFW-AbuseIPDB-Reporter
show less
Port Scan
Anonymous
2026-10-11T10:36:56.846843+02:00 mx1 postfix/submission/smtpd[2274479]: improper command pipelining ...
show more2026-10-11T10:36:56.846843+02:00 mx1 postfix/submission/smtpd[2274479]: improper command pipelining after CONNECT from unknown[2604:a940:300:5b6:0:f::]: \026\003\001\005\306\001\000\005\302\003\003\025\004\321\324J9zZj<\261\322\224r.c\365\377H\266Wyz\0167\225&\n0\254qZ \233'\277F\246\276&,\276\\\\a\367\250\245P\0323\022A\214\360%7\346\v\020_\005E\327#\000\032\300+\300/\300,\3000\314\251\314\250\300\t\300\023\300\n\300\024\023\001
show less
Blocked by UFW (TCP on 65499)
Source port: 51793
Packet length: 60
This report (for 2604:a940:0300: ...
show moreBlocked by UFW (TCP on 65499)
Source port: 51793
Packet length: 60
This report (for 2604:a940:0300:05b6:0000:000f:0000:0000) was generated by:
https://github.com/sefinek/UFW-AbuseIPDB-Reporter
show less
