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: DoD Network Information Center

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 <<>> 138.171.211.21
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 50678
;; flags: qr rd ra ad; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;138.171.211.21.			IN	A

;; AUTHORITY SECTION:
.			3600	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2019070302 1800 900 604800 86400

;; Query time: 2 msec
;; SERVER: 67.207.67.2#53(67.207.67.2)
;; WHEN: Thu Jul 04 02:46:48 CST 2019
;; MSG SIZE  rcvd: 118
Host info
Host 21.211.171.138.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		67.207.67.2
Address:	67.207.67.2#53

** server can't find 21.211.171.138.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
114.222.140.108 attackspam
Honeypot attack, port: 23, PTR: PTR record not found
2019-11-30 15:37:08
42.157.129.158 attackbotsspam
Nov 29 21:17:31 php1 sshd\[29750\]: Invalid user guhl from 42.157.129.158
Nov 29 21:17:31 php1 sshd\[29750\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=42.157.129.158
Nov 29 21:17:33 php1 sshd\[29750\]: Failed password for invalid user guhl from 42.157.129.158 port 52992 ssh2
Nov 29 21:22:01 php1 sshd\[30202\]: Invalid user yoyo from 42.157.129.158
Nov 29 21:22:01 php1 sshd\[30202\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=42.157.129.158
2019-11-30 15:39:22
51.75.195.39 attack
Nov 30 14:53:17 webhost01 sshd[30068]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.75.195.39
Nov 30 14:53:19 webhost01 sshd[30068]: Failed password for invalid user mb from 51.75.195.39 port 49570 ssh2
...
2019-11-30 15:56:34
45.95.55.12 attackbots
Nov 30 06:53:58 venus sshd\[1373\]: Invalid user chaales from 45.95.55.12 port 45416
Nov 30 06:53:58 venus sshd\[1373\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=45.95.55.12
Nov 30 06:54:00 venus sshd\[1373\]: Failed password for invalid user chaales from 45.95.55.12 port 45416 ssh2
...
2019-11-30 15:52:48
218.92.0.168 attackspam
Nov 30 08:30:25 MK-Soft-Root2 sshd[25060]: Failed password for root from 218.92.0.168 port 64063 ssh2
Nov 30 08:30:30 MK-Soft-Root2 sshd[25060]: Failed password for root from 218.92.0.168 port 64063 ssh2
...
2019-11-30 15:38:29
167.160.160.138 attackspam
Nov 30 08:28:05 elektron postfix/smtpd\[25141\]: NOQUEUE: reject: RCPT from unknown\[167.160.160.138\]: 450 4.7.1 Client host rejected: cannot find your hostname, \[167.160.160.138\]\; from=\ to=\ proto=ESMTP helo=\
Nov 30 08:38:05 elektron postfix/smtpd\[28710\]: NOQUEUE: reject: RCPT from unknown\[167.160.160.138\]: 450 4.7.1 Client host rejected: cannot find your hostname, \[167.160.160.138\]\; from=\ to=\ proto=ESMTP helo=\
Nov 30 08:39:38 elektron postfix/smtpd\[28710\]: NOQUEUE: reject: RCPT from unknown\[167.160.160.138\]: 450 4.7.1 Client host rejected: cannot find your hostname, \[167.160.160.138\]\; from=\ to=\ proto=ESMTP helo=\
Nov 30 08:48:06 elektron postfix/smtpd\[28710\]: NOQUEUE: reject: RCPT from unknown\[167.160.160.138\]: 450 4.7.1 Client host rejected: cannot find your hostname, \[167.160.160.138\]\; from=\ to=\
2019-11-30 15:35:03
14.247.135.25 attack
Unauthorised access (Nov 30) SRC=14.247.135.25 LEN=52 TTL=118 ID=1759 DF TCP DPT=445 WINDOW=8192 SYN
2019-11-30 15:48:34
51.89.148.180 attackspam
$f2bV_matches
2019-11-30 15:48:05
114.88.122.178 attack
Fail2Ban - FTP Abuse Attempt
2019-11-30 16:01:15
182.61.176.53 attackspambots
Nov 30 08:17:43 markkoudstaal sshd[23589]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=182.61.176.53
Nov 30 08:17:46 markkoudstaal sshd[23589]: Failed password for invalid user cn from 182.61.176.53 port 51206 ssh2
Nov 30 08:21:02 markkoudstaal sshd[23915]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=182.61.176.53
2019-11-30 15:29:30
144.217.42.212 attack
Nov 30 07:26:02 MainVPS sshd[8494]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=144.217.42.212  user=mail
Nov 30 07:26:04 MainVPS sshd[8494]: Failed password for mail from 144.217.42.212 port 47050 ssh2
Nov 30 07:28:59 MainVPS sshd[13880]: Invalid user facai from 144.217.42.212 port 36602
Nov 30 07:28:59 MainVPS sshd[13880]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=144.217.42.212
Nov 30 07:28:59 MainVPS sshd[13880]: Invalid user facai from 144.217.42.212 port 36602
Nov 30 07:29:01 MainVPS sshd[13880]: Failed password for invalid user facai from 144.217.42.212 port 36602 ssh2
...
2019-11-30 15:55:06
46.38.144.179 attackbots
Nov 30 08:54:44 webserver postfix/smtpd\[24255\]: warning: unknown\[46.38.144.179\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Nov 30 08:55:57 webserver postfix/smtpd\[24255\]: warning: unknown\[46.38.144.179\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Nov 30 08:57:09 webserver postfix/smtpd\[24255\]: warning: unknown\[46.38.144.179\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Nov 30 08:58:21 webserver postfix/smtpd\[24366\]: warning: unknown\[46.38.144.179\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Nov 30 08:59:34 webserver postfix/smtpd\[24366\]: warning: unknown\[46.38.144.179\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
...
2019-11-30 16:02:06
78.47.42.111 attackbots
Brute force RDP, port 3389
2019-11-30 15:58:28
83.10.152.221 attack
Automatic report - Port Scan Attack
2019-11-30 15:45:55
119.28.100.67 attack
" "
2019-11-30 15:51:00

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