2604:a940:300:5b6:0:14:: was found in our database!
This IP was reported 156 times. Confidence of
Abuse
is 0%: ?
0%
Important Note: Public IPv6 addresses may implement the SLAAC
privacy extension. With this, the interface identifier is randomly generated. The SLAAC
privacy extension also implements a time out, which is configurable, so that the IPv6
interface addresses will be discarded and a new interface identifier is generated.
IP info including ISP, Usage Type, and Location provided
by IPInfo. Updated weekly.
Important Note: 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".
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.
This IP address has been reported a total of
156
times from
7 distinct
sources.
2604:a940:300:5b6:0:14:: was first reported on
, and the most recent report was
.
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 389)
Source port: 55882
Packet length: 60
This report (for 2604:a940:0300:05 ...
show moreBlocked by UFW (TCP on 389)
Source port: 55882
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 4172)
Source port: 49398
Packet length: 60
This report (for 2604:a940:0300:0 ...
show moreBlocked by UFW (TCP on 4172)
Source port: 49398
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 56296)
Source port: 53917
Packet length: 60
This report (for 2604:a940:0300: ...
show moreBlocked by UFW (TCP on 56296)
Source port: 53917
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 1234)
Source port: 55142
Packet length: 60
This report (for 2604:a940:0300:0 ...
show moreBlocked by UFW (TCP on 1234)
Source port: 55142
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 1883)
Source port: 56255
Packet length: 60
This report (for 2604:a940:0300:0 ...
show moreBlocked by UFW (TCP on 1883)
Source port: 56255
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 20256)
Source port: 56666
Packet length: 60
This report (for 2604:a940:0300: ...
show moreBlocked by UFW (TCP on 20256)
Source port: 56666
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 8880)
Source port: 54202
Packet length: 60
This report (for 2604:a940:0300:0 ...
show moreBlocked by UFW (TCP on 8880)
Source port: 54202
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
2026-07-05T08:35:26.492093+02:00 srv02 postfix/submission/smtpd[746079]: improper command pipelining ...
show more2026-07-05T08:35:26.492093+02:00 srv02 postfix/submission/smtpd[746079]: improper command pipelining after CONNECT from unknown[2604:a940:300:5b6:0:14::]: \026\003\001\005\306\001\000\005\302\003\003\a\345*x\377\230Z:\214\255=u\372\356\242\005\216F:\363\241Z\356}\217\001\316\235m9\200\360 \006\277R|\250\23107\355\0303&\t\356w#D/a\025R,\243@\344j\224B-\361M\326\000\032\300+\300/\300,\3000\314\251\314\250\300\t\300\023\300\n\300\024\023\001
2026-07-05T08:35:30.118037+02:00 srv02 postfix/submission/smtpd[746081]: improper command pipelining after CONNECT from unknown[2604:a940:300:5b6:0:14::]: \026\003\001\000\312\001\000\000\306\003\003E\321\215E\211k\321\264\177\276\\\r\005\3270\325!\373V\253r\227\v(\333\333\332d\360\241\330?\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
2026-07-05T08:35:32.500449+02:00 srv02 postfix/submission/smtpd[746079]: lost conn
...
show less
SMTP Bruteforce. 2026-07-05T08:35:31.459193+02:00 *.* postfix/submission/smtpd[1620173]: improper co ...
show moreSMTP Bruteforce. 2026-07-05T08:35:31.459193+02:00 *.* postfix/submission/smtpd[1620173]: improper command pipelining after CONNECT from unknown[2604:a940:300:5b6:0:14::]: 026003001005306001000005302003003L]Y0063123540209%NK)274323320341G020n303377267P330f177i337o034271206 0172143773040175223261e2162703562172232702303300Y2330242570057006017%:365[357231000032300+300/300,3000314251314250300t300023300n300024023001
2026-07-05T08:35:31.935600+02:00 *.* postfix/submission/smtpd[1620173]: improper command pipelining after CONNECT from unknown[2604:a940:300:5b6:0:14::]: 026003001000312001000000306003003034035375364X373`234%6d356314T2076o341323037240343035253260Sg,377I[^000000h314024314023300/300+3000300,300021300a300'300#300023300t300(300$300024300n314025000236000237000g000k00030009000234000235000005000004
show less
Blocked by UFW (TCP on 8883)
Source port: 55657
Packet length: 60
This report (for 2604:a940:0300:0 ...
show moreBlocked by UFW (TCP on 8883)
Source port: 55657
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 8834)
Source port: 55059
Packet length: 60
This report (for 2604:a940:0300:0 ...
show moreBlocked by UFW (TCP on 8834)
Source port: 55059
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 8022)
Source port: 52936
Packet length: 60
This report (for 2604:a940:0300:0 ...
show moreBlocked by UFW (TCP on 8022)
Source port: 52936
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: 56711
Packet length: 60
This report (for 2604:a940:0300:0 ...
show moreBlocked by UFW (TCP on 8445)
Source port: 56711
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 8022)
Source port: 55115
Packet length: 60
This report (for 2604:a940:0300:0 ...
show moreBlocked by UFW (TCP on 8022)
Source port: 55115
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
Port Scan
Showing 1 to
15
of 156 reports
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reports reviewed and removed.
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