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 <<>> 104.21.78.138
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 60975
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.78.138.			IN	A

;; AUTHORITY SECTION:
.			432	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2022021701 1800 900 604800 86400

;; Query time: 71 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 02:57:20 CST 2022
;; MSG SIZE  rcvd: 106
Host info
Host 138.78.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 138.78.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
222.186.175.183 attackbotsspam
2020-06-07T13:02:33.819927xentho-1 sshd[1193952]: Failed password for root from 222.186.175.183 port 31562 ssh2
2020-06-07T13:02:27.312912xentho-1 sshd[1193952]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.175.183  user=root
2020-06-07T13:02:29.167205xentho-1 sshd[1193952]: Failed password for root from 222.186.175.183 port 31562 ssh2
2020-06-07T13:02:33.819927xentho-1 sshd[1193952]: Failed password for root from 222.186.175.183 port 31562 ssh2
2020-06-07T13:02:38.903510xentho-1 sshd[1193952]: Failed password for root from 222.186.175.183 port 31562 ssh2
2020-06-07T13:02:27.312912xentho-1 sshd[1193952]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.175.183  user=root
2020-06-07T13:02:29.167205xentho-1 sshd[1193952]: Failed password for root from 222.186.175.183 port 31562 ssh2
2020-06-07T13:02:33.819927xentho-1 sshd[1193952]: Failed password for root from 222.186.175.183 port 31562 ssh
...
2020-06-08 01:05:57
161.35.164.121 attackbotsspam
Jun  7 06:07:25 cumulus sshd[30542]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=161.35.164.121  user=r.r
Jun  7 06:07:27 cumulus sshd[30542]: Failed password for r.r from 161.35.164.121 port 44088 ssh2
Jun  7 06:07:27 cumulus sshd[30542]: Received disconnect from 161.35.164.121 port 44088:11: Bye Bye [preauth]
Jun  7 06:07:27 cumulus sshd[30542]: Disconnected from 161.35.164.121 port 44088 [preauth]
Jun  7 06:20:25 cumulus sshd[31563]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=161.35.164.121  user=r.r
Jun  7 06:20:26 cumulus sshd[31563]: Failed password for r.r from 161.35.164.121 port 37250 ssh2
Jun  7 06:20:26 cumulus sshd[31563]: Received disconnect from 161.35.164.121 port 37250:11: Bye Bye [preauth]
Jun  7 06:20:26 cumulus sshd[31563]: Disconnected from 161.35.164.121 port 37250 [preauth]
Jun  7 06:23:38 cumulus sshd[31816]: pam_unix(sshd:auth): authentication failure; lognam........
-------------------------------
2020-06-08 01:12:44
2.229.103.214 attackbotsspam
1591531496 - 06/07/2020 14:04:56 Host: 2.229.103.214/2.229.103.214 Port: 445 TCP Blocked
2020-06-08 01:32:31
125.64.94.130 attack
Jun  7 19:57:44 debian kernel: [451622.625891] [UFW BLOCK] IN=eth0 OUT= MAC=52:54:00:be:e4:65:08:e8:4f:6e:48:0c:08:00 SRC=125.64.94.130 DST=89.252.131.35 LEN=40 TOS=0x00 PREC=0x00 TTL=240 ID=54321 PROTO=TCP SPT=38147 DPT=5222 WINDOW=65535 RES=0x00 SYN URGP=0
2020-06-08 01:07:18
87.246.7.106 attackspambots
Jun  6 11:58:38 mail.srvfarm.net postfix/smtpd[3671807]: warning: unknown[87.246.7.106]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jun  6 11:58:38 mail.srvfarm.net postfix/smtpd[3671807]: lost connection after AUTH from unknown[87.246.7.106]
Jun  6 11:58:58 mail.srvfarm.net postfix/smtpd[3671808]: warning: unknown[87.246.7.106]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jun  6 11:58:58 mail.srvfarm.net postfix/smtpd[3671808]: lost connection after AUTH from unknown[87.246.7.106]
Jun  6 11:59:13 mail.srvfarm.net postfix/smtpd[3671713]: warning: unknown[87.246.7.106]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jun  6 11:59:13 mail.srvfarm.net postfix/smtpd[3671713]: lost connection after AUTH from unknown[87.246.7.106]
2020-06-08 00:52:18
62.234.83.138 attackspam
Jun  7 15:05:18 hosting sshd[16501]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=62.234.83.138  user=root
Jun  7 15:05:20 hosting sshd[16501]: Failed password for root from 62.234.83.138 port 59874 ssh2
...
2020-06-08 01:12:57
94.74.133.234 attackbots
Jun  5 15:11:23 mail.srvfarm.net postfix/smtps/smtpd[3108734]: warning: unknown[94.74.133.234]: SASL PLAIN authentication failed: 
Jun  5 15:11:23 mail.srvfarm.net postfix/smtps/smtpd[3108734]: lost connection after AUTH from unknown[94.74.133.234]
Jun  5 15:14:17 mail.srvfarm.net postfix/smtpd[3109366]: warning: unknown[94.74.133.234]: SASL PLAIN authentication failed: 
Jun  5 15:14:17 mail.srvfarm.net postfix/smtpd[3109366]: lost connection after AUTH from unknown[94.74.133.234]
Jun  5 15:15:56 mail.srvfarm.net postfix/smtpd[3109220]: warning: unknown[94.74.133.234]: SASL PLAIN authentication failed:
2020-06-08 01:00:21
193.202.45.42 attackspambots
Lines containing failures of 193.202.45.42 (max 1000)
Jun  7 13:43:26 ks3370873 sshd[259141]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=193.202.45.42  user=r.r
Jun  7 13:43:28 ks3370873 sshd[259141]: Failed password for r.r from 193.202.45.42 port 46134 ssh2
Jun  7 13:43:30 ks3370873 sshd[259141]: Received disconnect from 193.202.45.42 port 46134:11: Bye Bye [preauth]
Jun  7 13:43:30 ks3370873 sshd[259141]: Disconnected from authenticating user r.r 193.202.45.42 port 46134 [preauth]


........
-----------------------------------------------
https://www.blocklist.de/en/view.html?ip=193.202.45.42
2020-06-08 01:33:05
31.170.61.73 attackspambots
$f2bV_matches
2020-06-08 01:16:51
62.182.151.46 attack
Jun  5 16:06:24 mail.srvfarm.net postfix/smtps/smtpd[3115649]: warning: unknown[62.182.151.46]: SASL PLAIN authentication failed: 
Jun  5 16:06:24 mail.srvfarm.net postfix/smtps/smtpd[3115649]: lost connection after AUTH from unknown[62.182.151.46]
Jun  5 16:09:54 mail.srvfarm.net postfix/smtps/smtpd[3115655]: warning: unknown[62.182.151.46]: SASL PLAIN authentication failed: 
Jun  5 16:09:54 mail.srvfarm.net postfix/smtps/smtpd[3115655]: lost connection after AUTH from unknown[62.182.151.46]
Jun  5 16:15:57 mail.srvfarm.net postfix/smtps/smtpd[3115653]: warning: unknown[62.182.151.46]: SASL PLAIN authentication failed:
2020-06-08 00:53:39
128.199.143.19 attackspam
Brute-force attempt banned
2020-06-08 01:23:56
125.214.60.222 attackbotsspam
1591531497 - 06/07/2020 14:04:57 Host: 125.214.60.222/125.214.60.222 Port: 445 TCP Blocked
2020-06-08 01:29:51
186.216.71.50 attackbotsspam
Jun  5 14:48:38 mail.srvfarm.net postfix/smtpd[3095007]: warning: unknown[186.216.71.50]: SASL PLAIN authentication failed: 
Jun  5 14:48:38 mail.srvfarm.net postfix/smtpd[3095007]: lost connection after AUTH from unknown[186.216.71.50]
Jun  5 14:55:01 mail.srvfarm.net postfix/smtps/smtpd[3094396]: warning: unknown[186.216.71.50]: SASL PLAIN authentication failed: 
Jun  5 14:55:01 mail.srvfarm.net postfix/smtps/smtpd[3094396]: lost connection after AUTH from unknown[186.216.71.50]
Jun  5 14:57:10 mail.srvfarm.net postfix/smtpd[3093305]: warning: unknown[186.216.71.50]: SASL PLAIN authentication failed:
2020-06-08 00:57:01
91.205.128.170 attack
Jun  7 03:11:00 php1 sshd\[5557\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=91.205.128.170  user=root
Jun  7 03:11:02 php1 sshd\[5557\]: Failed password for root from 91.205.128.170 port 57522 ssh2
Jun  7 03:14:41 php1 sshd\[5821\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=91.205.128.170  user=root
Jun  7 03:14:43 php1 sshd\[5821\]: Failed password for root from 91.205.128.170 port 60432 ssh2
Jun  7 03:18:23 php1 sshd\[6095\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=91.205.128.170  user=root
2020-06-08 01:07:36
185.124.184.176 attackspambots
Jun  5 15:15:27 mail.srvfarm.net postfix/smtpd[3095777]: warning: unknown[185.124.184.176]: SASL PLAIN authentication failed: 
Jun  5 15:15:27 mail.srvfarm.net postfix/smtpd[3095777]: lost connection after AUTH from unknown[185.124.184.176]
Jun  5 15:22:11 mail.srvfarm.net postfix/smtps/smtpd[3108780]: warning: unknown[185.124.184.176]: SASL PLAIN authentication failed: 
Jun  5 15:22:11 mail.srvfarm.net postfix/smtps/smtpd[3108780]: lost connection after AUTH from unknown[185.124.184.176]
Jun  5 15:24:54 mail.srvfarm.net postfix/smtps/smtpd[3109500]: warning: unknown[185.124.184.176]: SASL PLAIN authentication failed:
2020-06-08 00:58:39

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