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: United States

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 <<>> 104.21.45.100
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 8157
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.45.100.			IN	A

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

;; Query time: 59 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Thu Feb 17 22:37:35 CST 2022
;; MSG SIZE  rcvd: 106
Host info
Host 100.45.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 100.45.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
103.198.80.38 attackbotsspam
SASL PLAIN auth failed: ruser=...
2020-09-15 07:07:31
188.166.251.87 attackbots
Sep 14 19:29:43 mail sshd\[8198\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=188.166.251.87  user=root
...
2020-09-15 07:36:13
162.247.74.74 attackspam
2020-09-15T00:27[Censored Hostname] sshd[28256]: Failed password for root from 162.247.74.74 port 35418 ssh2
2020-09-15T00:27[Censored Hostname] sshd[28256]: Failed password for root from 162.247.74.74 port 35418 ssh2
2020-09-15T00:27[Censored Hostname] sshd[28256]: Failed password for root from 162.247.74.74 port 35418 ssh2[...]
2020-09-15 07:40:55
222.186.42.7 attackspambots
$f2bV_matches
2020-09-15 07:14:53
139.99.98.248 attackbots
2020-09-14T14:03:39.9058751495-001 sshd[4066]: Failed password for root from 139.99.98.248 port 52108 ssh2
2020-09-14T14:08:06.9147731495-001 sshd[4393]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=139.99.98.248  user=root
2020-09-14T14:08:08.8283481495-001 sshd[4393]: Failed password for root from 139.99.98.248 port 36120 ssh2
2020-09-14T14:12:30.1052501495-001 sshd[4741]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=139.99.98.248  user=root
2020-09-14T14:12:31.9281851495-001 sshd[4741]: Failed password for root from 139.99.98.248 port 48364 ssh2
2020-09-14T14:16:52.0759361495-001 sshd[5011]: Invalid user anne from 139.99.98.248 port 60634
...
2020-09-15 07:41:11
64.22.104.227 attackbotsspam
20 attempts against mh-ssh on flow
2020-09-15 07:42:35
88.199.25.26 attack
Sep 14 18:30:08 mail.srvfarm.net postfix/smtpd[2075458]: warning: 88-199-25-26.tktelekom.pl[88.199.25.26]: SASL PLAIN authentication failed: 
Sep 14 18:30:08 mail.srvfarm.net postfix/smtpd[2075458]: lost connection after AUTH from 88-199-25-26.tktelekom.pl[88.199.25.26]
Sep 14 18:32:01 mail.srvfarm.net postfix/smtpd[2071659]: warning: 88-199-25-26.tktelekom.pl[88.199.25.26]: SASL PLAIN authentication failed: 
Sep 14 18:32:01 mail.srvfarm.net postfix/smtpd[2071659]: lost connection after AUTH from 88-199-25-26.tktelekom.pl[88.199.25.26]
Sep 14 18:39:08 mail.srvfarm.net postfix/smtps/smtpd[2073813]: warning: 88-199-25-26.tktelekom.pl[88.199.25.26]: SASL PLAIN authentication failed:
2020-09-15 07:10:20
200.133.39.84 attackbotsspam
Bruteforce detected by fail2ban
2020-09-15 07:30:38
115.238.97.2 attack
Time:     Mon Sep 14 22:10:08 2020 +0200
IP:       115.238.97.2 (CN/China/-)
Failures: 5 (sshd)
Interval: 3600 seconds
Blocked:  Permanent Block [LF_SSHD]

Log entries:

Sep 14 21:52:26 ca-3-ams1 sshd[35858]: Invalid user test from 115.238.97.2 port 4177
Sep 14 21:52:28 ca-3-ams1 sshd[35858]: Failed password for invalid user test from 115.238.97.2 port 4177 ssh2
Sep 14 22:05:50 ca-3-ams1 sshd[36592]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=115.238.97.2  user=root
Sep 14 22:05:52 ca-3-ams1 sshd[36592]: Failed password for root from 115.238.97.2 port 3145 ssh2
Sep 14 22:10:03 ca-3-ams1 sshd[36921]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=115.238.97.2  user=root
2020-09-15 07:38:30
1.197.204.204 attackbotsspam
Blocked 1.197.204.204 For policy violation
2020-09-15 07:43:25
117.121.227.250 attack
Sep 14 20:53:03 mail.srvfarm.net postfix/smtps/smtpd[2120389]: warning: unknown[117.121.227.250]: SASL PLAIN authentication failed: 
Sep 14 20:53:03 mail.srvfarm.net postfix/smtps/smtpd[2120389]: lost connection after AUTH from unknown[117.121.227.250]
Sep 14 21:00:15 mail.srvfarm.net postfix/smtpd[2126537]: warning: unknown[117.121.227.250]: SASL PLAIN authentication failed: 
Sep 14 21:00:15 mail.srvfarm.net postfix/smtpd[2126537]: lost connection after AUTH from unknown[117.121.227.250]
Sep 14 21:01:37 mail.srvfarm.net postfix/smtpd[2124032]: warning: unknown[117.121.227.250]: SASL PLAIN authentication failed:
2020-09-15 07:21:23
45.160.138.182 attack
Sep 14 18:54:56 mail.srvfarm.net postfix/smtpd[2076883]: warning: unknown[45.160.138.182]: SASL PLAIN authentication failed: 
Sep 14 18:54:57 mail.srvfarm.net postfix/smtpd[2076883]: lost connection after AUTH from unknown[45.160.138.182]
Sep 14 18:56:18 mail.srvfarm.net postfix/smtpd[2076883]: warning: unknown[45.160.138.182]: SASL PLAIN authentication failed: 
Sep 14 18:56:18 mail.srvfarm.net postfix/smtpd[2076883]: lost connection after AUTH from unknown[45.160.138.182]
Sep 14 18:57:07 mail.srvfarm.net postfix/smtps/smtpd[2079600]: warning: unknown[45.160.138.182]: SASL PLAIN authentication failed:
2020-09-15 07:12:17
45.239.143.30 attackspam
Sep 14 18:37:47 mail.srvfarm.net postfix/smtpd[2073486]: warning: unknown[45.239.143.30]: SASL PLAIN authentication failed: 
Sep 14 18:37:48 mail.srvfarm.net postfix/smtpd[2073486]: lost connection after AUTH from unknown[45.239.143.30]
Sep 14 18:38:44 mail.srvfarm.net postfix/smtps/smtpd[2075240]: warning: unknown[45.239.143.30]: SASL PLAIN authentication failed: 
Sep 14 18:38:46 mail.srvfarm.net postfix/smtps/smtpd[2075240]: lost connection after AUTH from unknown[45.239.143.30]
Sep 14 18:47:27 mail.srvfarm.net postfix/smtps/smtpd[2079372]: warning: unknown[45.239.143.30]: SASL PLAIN authentication failed:
2020-09-15 07:11:16
45.142.120.183 attackbots
Sep 15 00:49:36 websrv1.aknwsrv.net postfix/smtpd[649013]: warning: unknown[45.142.120.183]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Sep 15 00:49:46 websrv1.aknwsrv.net postfix/smtpd[649116]: warning: unknown[45.142.120.183]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Sep 15 00:49:57 websrv1.aknwsrv.net postfix/smtpd[649013]: warning: unknown[45.142.120.183]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Sep 15 00:50:02 websrv1.aknwsrv.net postfix/smtpd[649116]: warning: unknown[45.142.120.183]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Sep 15 00:50:27 websrv1.aknwsrv.net postfix/smtpd[649013]: warning: unknown[45.142.120.183]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
2020-09-15 07:12:44
41.139.0.34 attackspam
Sep 15 00:14:14 mail.srvfarm.net postfix/smtps/smtpd[2201905]: warning: unknown[41.139.0.34]: SASL PLAIN authentication failed: 
Sep 15 00:14:14 mail.srvfarm.net postfix/smtps/smtpd[2201905]: lost connection after AUTH from unknown[41.139.0.34]
Sep 15 00:14:57 mail.srvfarm.net postfix/smtps/smtpd[2203408]: warning: unknown[41.139.0.34]: SASL PLAIN authentication failed: 
Sep 15 00:14:57 mail.srvfarm.net postfix/smtps/smtpd[2203408]: lost connection after AUTH from unknown[41.139.0.34]
Sep 15 00:21:37 mail.srvfarm.net postfix/smtpd[2240874]: warning: unknown[41.139.0.34]: SASL PLAIN authentication failed:
2020-09-15 07:26:34

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