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 <<>> 104.21.87.138
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 53555
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.87.138.			IN	A

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

;; Query time: 16 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 03:09:08 CST 2022
;; MSG SIZE  rcvd: 106
Host info
Host 138.87.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 138.87.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
85.209.0.253 attack
MultiHost/MultiPort Probe, Scan, Hack -
2020-09-07 21:00:46
45.227.255.4 attackspam
Sep  7 14:27:43 pve1 sshd[808]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=45.227.255.4 
Sep  7 14:27:45 pve1 sshd[808]: Failed password for invalid user support from 45.227.255.4 port 48749 ssh2
...
2020-09-07 20:33:36
49.233.143.87 attackspambots
Sep  7 13:35:28 ajax sshd[20230]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.233.143.87 
Sep  7 13:35:29 ajax sshd[20230]: Failed password for invalid user admin from 49.233.143.87 port 53590 ssh2
2020-09-07 20:48:34
203.168.20.126 attackspam
port scan and connect, tcp 8080 (http-proxy)
2020-09-07 20:42:19
112.85.42.73 attackbotsspam
Sep  7 14:50:27 vps647732 sshd[9787]: Failed password for root from 112.85.42.73 port 41922 ssh2
Sep  7 14:50:29 vps647732 sshd[9787]: Failed password for root from 112.85.42.73 port 41922 ssh2
...
2020-09-07 20:51:45
2402:3a80:df6:921a:455:b325:7188:abea attack
Wordpress attack
2020-09-07 20:55:36
113.116.98.192 attackbots
spam
2020-09-07 21:12:46
116.247.81.99 attack
Sep  7 06:01:31 dignus sshd[1999]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=116.247.81.99  user=root
Sep  7 06:01:33 dignus sshd[1999]: Failed password for root from 116.247.81.99 port 58101 ssh2
Sep  7 06:06:11 dignus sshd[2279]: Invalid user apache from 116.247.81.99 port 57338
Sep  7 06:06:11 dignus sshd[2279]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=116.247.81.99
Sep  7 06:06:13 dignus sshd[2279]: Failed password for invalid user apache from 116.247.81.99 port 57338 ssh2
...
2020-09-07 21:10:39
223.191.52.85 attack
1599411289 - 09/06/2020 18:54:49 Host: 223.191.52.85/223.191.52.85 Port: 445 TCP Blocked
2020-09-07 20:45:53
141.98.9.164 attack
Sep  7 10:23:45 scw-6657dc sshd[26650]: Invalid user admin from 141.98.9.164 port 40925
Sep  7 10:23:45 scw-6657dc sshd[26650]: Invalid user admin from 141.98.9.164 port 40925
Sep  7 10:23:45 scw-6657dc sshd[26650]: Failed none for invalid user admin from 141.98.9.164 port 40925 ssh2
...
2020-09-07 21:07:09
37.187.54.45 attackbotsspam
Sep  7 12:36:18 nextcloud sshd\[9425\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=37.187.54.45  user=root
Sep  7 12:36:20 nextcloud sshd\[9425\]: Failed password for root from 37.187.54.45 port 44988 ssh2
Sep  7 12:39:47 nextcloud sshd\[12371\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=37.187.54.45  user=root
2020-09-07 20:38:26
180.76.169.198 attackbots
(sshd) Failed SSH login from 180.76.169.198 (CN/China/-): 5 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_SSHD; Logs: Sep  7 13:50:18 amsweb01 sshd[16274]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=180.76.169.198  user=root
Sep  7 13:50:21 amsweb01 sshd[16274]: Failed password for root from 180.76.169.198 port 51334 ssh2
Sep  7 14:01:50 amsweb01 sshd[17933]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=180.76.169.198  user=root
Sep  7 14:01:52 amsweb01 sshd[17933]: Failed password for root from 180.76.169.198 port 48068 ssh2
Sep  7 14:05:28 amsweb01 sshd[18462]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=180.76.169.198  user=root
2020-09-07 21:14:31
37.139.20.6 attackspambots
Sep  7 13:56:14 eventyay sshd[23690]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=37.139.20.6
Sep  7 13:56:16 eventyay sshd[23690]: Failed password for invalid user photography from 37.139.20.6 port 42637 ssh2
Sep  7 14:05:07 eventyay sshd[23898]: Failed password for root from 37.139.20.6 port 45920 ssh2
...
2020-09-07 21:16:25
124.236.22.12 attackbotsspam
SSH login attempts.
2020-09-07 20:39:57
45.142.120.49 attackbots
2020-09-07 15:46:22 dovecot_login authenticator failed for \(User\) \[45.142.120.49\]: 535 Incorrect authentication data \(set_id=demo03@org.ua\)2020-09-07 15:47:06 dovecot_login authenticator failed for \(User\) \[45.142.120.49\]: 535 Incorrect authentication data \(set_id=dick@org.ua\)2020-09-07 15:47:50 dovecot_login authenticator failed for \(User\) \[45.142.120.49\]: 535 Incorrect authentication data \(set_id=wp_screen_options@org.ua\)
...
2020-09-07 20:48:59

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