Must be a valid IPv4 or IPv6 ip address, e.g. 127.0.0.1 or 2001:DB8:0:0:8:800:200C:417A
Basic Info

City: unknown

Region: unknown

Country: None

Internet Service Provider: unknown

Hostname: unknown

Organization: unknown

Usage Type: unknown

Comments:
No discussion about this IP yet. Click above link to make one.
Comments on same subnet:
No discussion about this subnet yet..
Whois info:
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Dig info:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> 104.21.57.166
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 62608
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.57.166.			IN	A

;; AUTHORITY SECTION:
.			110	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2022021700 1800 900 604800 86400

;; Query time: 98 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 00:31:09 CST 2022
;; MSG SIZE  rcvd: 106
Host info
Host 166.57.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 166.57.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
46.38.150.72 attackspambots
Jul 16 10:02:58 srv01 postfix/smtpd\[32505\]: warning: unknown\[46.38.150.72\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jul 16 10:03:27 srv01 postfix/smtpd\[28968\]: warning: unknown\[46.38.150.72\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jul 16 10:03:53 srv01 postfix/smtpd\[32505\]: warning: unknown\[46.38.150.72\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jul 16 10:04:24 srv01 postfix/smtpd\[15402\]: warning: unknown\[46.38.150.72\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jul 16 10:04:52 srv01 postfix/smtpd\[26856\]: warning: unknown\[46.38.150.72\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
...
2020-07-16 16:05:06
77.48.26.154 attackbots
Jul 16 05:08:06 mail.srvfarm.net postfix/smtpd[671868]: warning: unknown[77.48.26.154]: SASL PLAIN authentication failed: 
Jul 16 05:08:06 mail.srvfarm.net postfix/smtpd[671868]: lost connection after AUTH from unknown[77.48.26.154]
Jul 16 05:08:18 mail.srvfarm.net postfix/smtps/smtpd[685693]: warning: unknown[77.48.26.154]: SASL PLAIN authentication failed: 
Jul 16 05:08:18 mail.srvfarm.net postfix/smtps/smtpd[685693]: lost connection after AUTH from unknown[77.48.26.154]
Jul 16 05:14:59 mail.srvfarm.net postfix/smtps/smtpd[685707]: warning: unknown[77.48.26.154]: SASL PLAIN authentication failed: 
Jul 16 05:14:59 mail.srvfarm.net postfix/smtps/smtpd[685707]: lost connection after AUTH from unknown[77.48.26.154]
2020-07-16 16:15:57
46.38.150.37 attackspam
Jul 16 09:48:36 websrv1.derweidener.de postfix/smtpd[1661296]: warning: unknown[46.38.150.37]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jul 16 09:49:35 websrv1.derweidener.de postfix/smtpd[1661296]: warning: unknown[46.38.150.37]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jul 16 09:50:33 websrv1.derweidener.de postfix/smtpd[1663017]: warning: unknown[46.38.150.37]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jul 16 09:51:33 websrv1.derweidener.de postfix/smtpd[1663017]: warning: unknown[46.38.150.37]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jul 16 09:52:31 websrv1.derweidener.de postfix/smtpd[1663017]: warning: unknown[46.38.150.37]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
2020-07-16 16:05:59
93.174.93.123 attackspam
Jul 16 09:33:34 debian-2gb-nbg1-2 kernel: \[17143374.886648\] \[UFW BLOCK\] IN=eth0 OUT= MAC=96:00:00:0e:18:f4:d2:74:7f:6e:37:e3:08:00 SRC=93.174.93.123 DST=195.201.40.59 LEN=40 TOS=0x00 PREC=0x00 TTL=247 ID=43413 PROTO=TCP SPT=43411 DPT=39766 WINDOW=1024 RES=0x00 SYN URGP=0
2020-07-16 15:49:35
138.94.211.171 attack
Jul 16 05:30:47 mail.srvfarm.net postfix/smtpd[700170]: warning: unknown[138.94.211.171]: SASL PLAIN authentication failed: 
Jul 16 05:30:47 mail.srvfarm.net postfix/smtpd[700170]: lost connection after AUTH from unknown[138.94.211.171]
Jul 16 05:34:23 mail.srvfarm.net postfix/smtpd[699500]: warning: unknown[138.94.211.171]: SASL PLAIN authentication failed: 
Jul 16 05:34:23 mail.srvfarm.net postfix/smtpd[699500]: lost connection after AUTH from unknown[138.94.211.171]
Jul 16 05:38:39 mail.srvfarm.net postfix/smtps/smtpd[702672]: warning: unknown[138.94.211.171]: SASL PLAIN authentication failed:
2020-07-16 16:00:10
168.195.187.39 attack
Jul 16 05:24:45 mail.srvfarm.net postfix/smtpd[699499]: warning: unknown[168.195.187.39]: SASL PLAIN authentication failed: 
Jul 16 05:24:46 mail.srvfarm.net postfix/smtpd[699499]: lost connection after AUTH from unknown[168.195.187.39]
Jul 16 05:30:20 mail.srvfarm.net postfix/smtps/smtpd[703164]: warning: unknown[168.195.187.39]: SASL PLAIN authentication failed: 
Jul 16 05:30:21 mail.srvfarm.net postfix/smtps/smtpd[703164]: lost connection after AUTH from unknown[168.195.187.39]
Jul 16 05:34:31 mail.srvfarm.net postfix/smtps/smtpd[701932]: warning: unknown[168.195.187.39]: SASL PLAIN authentication failed:
2020-07-16 15:59:38
177.87.220.164 attackbots
Jul 16 05:24:11 mail.srvfarm.net postfix/smtpd[699494]: warning: unknown[177.87.220.164]: SASL PLAIN authentication failed: 
Jul 16 05:24:11 mail.srvfarm.net postfix/smtpd[699494]: lost connection after AUTH from unknown[177.87.220.164]
Jul 16 05:25:34 mail.srvfarm.net postfix/smtps/smtpd[701896]: warning: unknown[177.87.220.164]: SASL PLAIN authentication failed: 
Jul 16 05:25:34 mail.srvfarm.net postfix/smtps/smtpd[701896]: lost connection after AUTH from unknown[177.87.220.164]
Jul 16 05:31:23 mail.srvfarm.net postfix/smtps/smtpd[702659]: warning: unknown[177.87.220.164]: SASL PLAIN authentication failed:
2020-07-16 15:57:57
171.80.186.84 attackbots
Failed password for invalid user pc01 from 171.80.186.84 port 46852 ssh2
2020-07-16 16:22:50
106.75.234.54 attackbots
Invalid user jayson from 106.75.234.54 port 54353
2020-07-16 16:13:48
40.76.234.84 attack
Jul 16 00:58:15 *hidden* sshd[15390]: Failed password for *hidden* from 40.76.234.84 port 44468 ssh2 Jul 16 09:11:14 *hidden* sshd[12916]: Failed password for *hidden* from 40.76.234.84 port 51947 ssh2
2020-07-16 16:25:24
85.185.83.51 attackbots
Jul 16 05:08:27 mail.srvfarm.net postfix/smtpd[699495]: warning: unknown[85.185.83.51]: SASL PLAIN authentication failed: 
Jul 16 05:08:27 mail.srvfarm.net postfix/smtpd[699495]: lost connection after AUTH from unknown[85.185.83.51]
Jul 16 05:15:35 mail.srvfarm.net postfix/smtps/smtpd[701931]: warning: unknown[85.185.83.51]: SASL PLAIN authentication failed: 
Jul 16 05:15:35 mail.srvfarm.net postfix/smtps/smtpd[701931]: lost connection after AUTH from unknown[85.185.83.51]
Jul 16 05:18:22 mail.srvfarm.net postfix/smtpd[699496]: warning: unknown[85.185.83.51]: SASL PLAIN authentication failed:
2020-07-16 16:14:41
170.239.148.84 attack
Jul 16 05:08:11 mail.srvfarm.net postfix/smtps/smtpd[685340]: warning: unknown[170.239.148.84]: SASL PLAIN authentication failed: 
Jul 16 05:08:11 mail.srvfarm.net postfix/smtps/smtpd[685340]: lost connection after AUTH from unknown[170.239.148.84]
Jul 16 05:11:05 mail.srvfarm.net postfix/smtpd[699499]: warning: unknown[170.239.148.84]: SASL PLAIN authentication failed: 
Jul 16 05:11:05 mail.srvfarm.net postfix/smtpd[699499]: lost connection after AUTH from unknown[170.239.148.84]
Jul 16 05:17:59 mail.srvfarm.net postfix/smtps/smtpd[701932]: warning: unknown[170.239.148.84]: SASL PLAIN authentication failed:
2020-07-16 16:12:27
78.128.113.114 attackbotsspam
Jul 16 09:42:04 mail.srvfarm.net postfix/smtpd[805418]: warning: unknown[78.128.113.114]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jul 16 09:42:04 mail.srvfarm.net postfix/smtpd[805418]: lost connection after AUTH from unknown[78.128.113.114]
Jul 16 09:42:09 mail.srvfarm.net postfix/smtpd[806440]: lost connection after AUTH from unknown[78.128.113.114]
Jul 16 09:42:14 mail.srvfarm.net postfix/smtpd[805418]: lost connection after AUTH from unknown[78.128.113.114]
Jul 16 09:42:19 mail.srvfarm.net postfix/smtpd[806440]: lost connection after AUTH from unknown[78.128.113.114]
2020-07-16 16:03:24
222.186.175.151 attackspam
Jul 16 10:16:32 debian64 sshd[28754]: Failed password for root from 222.186.175.151 port 41350 ssh2
Jul 16 10:16:36 debian64 sshd[28754]: Failed password for root from 222.186.175.151 port 41350 ssh2
...
2020-07-16 16:20:54
193.35.51.13 attackspam
Jul 16 09:50:02 mail.srvfarm.net postfix/smtpd[805418]: warning: unknown[193.35.51.13]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jul 16 09:50:02 mail.srvfarm.net postfix/smtpd[805418]: lost connection after AUTH from unknown[193.35.51.13]
Jul 16 09:50:07 mail.srvfarm.net postfix/smtpd[808142]: lost connection after AUTH from unknown[193.35.51.13]
Jul 16 09:50:12 mail.srvfarm.net postfix/smtpd[805418]: lost connection after AUTH from unknown[193.35.51.13]
Jul 16 09:50:16 mail.srvfarm.net postfix/smtpd[805417]: lost connection after AUTH from unknown[193.35.51.13]
2020-07-16 15:54:39

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