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2604:a940:300:5b6:0:14::
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:a940:300:5b6:0:14:: is an IP address from within our whitelist belonging to the subnet
2604:a940:300:5b6::/64,
which we identify as "Cortex Xpanse".
Log in to view charts and search reports for this IP.
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IP Abuse Reports for 2604:a940:300:5b6:0:14:::
This IP address has been reported a total of
399
times from
10 distinct
sources.
2604:a940:300:5b6:0:14:: 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 180
reports;
Germany
with 39
reports;
Netherlands
with 2
reports.
The most common categories in these recent reports were:
Port Scan
208
times;
Brute-Force
39
times;
Web App Attack
7
times;
Bad Web Bot
2
times;
SQL Injection
1
time;
Other
1
time.
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 8090)
Source port: 55736
Packet length: 60
This report (for 2604:a940:0300:0 ...
show moreBlocked by UFW (TCP on 8090)
Source port: 55736
Packet length: 60
This report (for 2604:a940:0300:05b6:0000:0014:0000:0000) was generated by:
https://github.com/sefinek/UFW-AbuseIPDB-Reporter
show less
2026-09-12T08:29:12.672869+02:00 srv02 postfix/submission/smtpd[206637]: improper command pipelining ...
show more2026-09-12T08:29:12.672869+02:00 srv02 postfix/submission/smtpd[206637]: improper command pipelining after CONNECT from unknown[2604:a940:300:5b6:0:14::]: \026\003\001\005\306\001\000\005\302\003\003z\267\371\236\3545p\350Y]5B\207eC \242\217o\311\307Y\023cp\023\032\n\177%\312\230 \306\310\026\253\344\024\351\235\365\221\b\360\365c\035k\346J=\026\v5\240\247\306~\023KX\247\215v\000\032\300+\300/\300,\3000\314\251\314\250\300\t\300\023\300\n\300\024\023\001
2026-09-12T08:29:16.303478+02:00 srv02 postfix/submission/smtpd[206640]: improper command pipelining after CONNECT from unknown[2604:a940:300:5b6:0:14::]: \026\003\001\000\312\001\000\000\306\003\003\360\353\025\017`\t\030ElqC\213\024+\330\336\213\000\242'\231IsJ\250*<\235\321\275\031\211\000\000h\314\024\314\023\300/\300+\3000\300,\300\021\300\a\300'\300#\300\023\300\t\300(\300$\300\024\300\n\314\025\000\236\000\237\000g\000k\0003\0009\000\234\000\235\000\005\000\004
2026-09-12T08:29:16.672874+02:00 srv02 postfix/submission/smtpd[2066
...
show less
Brute-Force
Anonymous
2026-09-12T08:29:08.696171+02:00 mx1 postfix/submission/smtpd[2374977]: improper command pipelining ...
show more2026-09-12T08:29:08.696171+02:00 mx1 postfix/submission/smtpd[2374977]: improper command pipelining after CONNECT from unknown[2604:a940:300:5b6:0:14::]: \026\003\001\005\306\001\000\005\302\003\003\342\027U\315B2\371\214\267ID\275\343\000\353`\000\233Qv\254\231\254\202\206\035`\247C\000\226\363 \251\271\356R]\003\363\231+\206\242\263Uf\336[\315\027kH\265\304\3439\310\213iu\363\254\211,\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 587)
Source port: 55878
Packet length: 60
This report (for 2604:a940:0300:05 ...
show moreBlocked by UFW (TCP on 587)
Source port: 55878
Packet length: 60
This report (for 2604:a940:0300:05b6:0000:0014:0000:0000) was generated by:
https://github.com/sefinek/UFW-AbuseIPDB-Reporter
show less
Blocked by UFW (TCP on 8009)
Source port: 52743
Packet length: 60
This report (for 2604:a940:0300:0 ...
show moreBlocked by UFW (TCP on 8009)
Source port: 52743
Packet length: 60
This report (for 2604:a940:0300:05b6:0000:0014:0000:0000) was generated by:
https://github.com/sefinek/UFW-AbuseIPDB-Reporter
show less
Blocked by UFW (TCP on 50995)
Source port: 56749
Packet length: 60
This report (for 2604:a940:0300: ...
show moreBlocked by UFW (TCP on 50995)
Source port: 56749
Packet length: 60
This report (for 2604:a940:0300:05b6:0000:0014:0000:0000) was generated by:
https://github.com/sefinek/UFW-AbuseIPDB-Reporter
show less
Blocked by UFW (TCP on 9000)
Source port: 53143
Packet length: 60
This report (for 2604:a940:0300:0 ...
show moreBlocked by UFW (TCP on 9000)
Source port: 53143
Packet length: 60
This report (for 2604:a940:0300:05b6:0000:0014:0000:0000) was generated by:
https://github.com/sefinek/UFW-AbuseIPDB-Reporter
show less
Blocked by UFW (TCP on 5000)
Source port: 49497
Packet length: 60
This report (for 2604:a940:0300:0 ...
show moreBlocked by UFW (TCP on 5000)
Source port: 49497
Packet length: 60
This report (for 2604:a940:0300:05b6:0000:0014:0000:0000) was generated by:
https://github.com/sefinek/UFW-AbuseIPDB-Reporter
show less
Blocked by UFW (TCP on 2082)
Source port: 53627
Packet length: 60
This report (for 2604:a940:0300:0 ...
show moreBlocked by UFW (TCP on 2082)
Source port: 53627
Packet length: 60
This report (for 2604:a940:0300:05b6:0000:0014:0000:0000) was generated by:
https://github.com/sefinek/UFW-AbuseIPDB-Reporter
show less
Blocked by UFW (TCP on 5905)
Source port: 49688
Packet length: 60
This report (for 2604:a940:0300:0 ...
show moreBlocked by UFW (TCP on 5905)
Source port: 49688
Packet length: 60
This report (for 2604:a940:0300:05b6:0000:0014:0000:0000) was generated by:
https://github.com/sefinek/UFW-AbuseIPDB-Reporter
show less
Blocked by UFW (TCP on 22460)
Source port: 49859
Packet length: 60
This report (for 2604:a940:0300: ...
show moreBlocked by UFW (TCP on 22460)
Source port: 49859
Packet length: 60
This report (for 2604:a940:0300:05b6:0000:0014:0000:0000) was generated by:
https://github.com/sefinek/UFW-AbuseIPDB-Reporter
show less
Blocked by UFW (TCP on 8445)
Source port: 55377
Packet length: 60
This report (for 2604:a940:0300:0 ...
show moreBlocked by UFW (TCP on 8445)
Source port: 55377
Packet length: 60
This report (for 2604:a940:0300:05b6:0000:0014:0000:0000) was generated by:
https://github.com/sefinek/UFW-AbuseIPDB-Reporter
show less
Blocked by UFW (TCP on 8080)
Source port: 54800
Packet length: 60
This report (for 2604:a940:0300:0 ...
show moreBlocked by UFW (TCP on 8080)
Source port: 54800
Packet length: 60
This report (for 2604:a940:0300:05b6:0000:0014:0000:0000) was generated by:
https://github.com/sefinek/UFW-AbuseIPDB-Reporter
show less
Blocked by UFW (TCP on 55918)
Source port: 52817
Packet length: 60
This report (for 2604:a940:0300: ...
show moreBlocked by UFW (TCP on 55918)
Source port: 52817
Packet length: 60
This report (for 2604:a940:0300:05b6:0000:0014:0000:0000) was generated by:
https://github.com/sefinek/UFW-AbuseIPDB-Reporter
show less
