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 <<>> 104.21.81.172
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 38576
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.81.172.			IN	A

;; AUTHORITY SECTION:
.			102	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2022021702 1800 900 604800 86400

;; Query time: 110 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 10:20:24 CST 2022
;; MSG SIZE  rcvd: 106
Host info
Host 172.81.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 172.81.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
177.83.246.130 attackspambots
Sep  3 14:34:54 localhost kernel: [1273510.249773] iptables_INPUT_denied: IN=eth0 OUT= MAC=f2:3c:91:84:83:95:84:78:ac:57:aa:c1:08:00 SRC=177.83.246.130 DST=[mungedIP2] LEN=40 TOS=0x00 PREC=0x00 TTL=56 ID=46734 PROTO=TCP SPT=65376 DPT=23 WINDOW=37632 RES=0x00 SYN URGP=0 
Sep  3 14:34:54 localhost kernel: [1273510.249807] iptables_INPUT_denied: IN=eth0 OUT= MAC=f2:3c:91:84:83:95:84:78:ac:57:aa:c1:08:00 SRC=177.83.246.130 DST=[mungedIP2] LEN=40 TOS=0x00 PREC=0x00 TTL=56 ID=46734 PROTO=TCP SPT=65376 DPT=23 SEQ=758669438 ACK=0 WINDOW=37632 RES=0x00 SYN URGP=0
2019-09-04 08:16:34
75.132.128.33 attackspam
$f2bV_matches_ltvn
2019-09-04 08:21:26
200.111.137.132 attackspambots
Sep  3 14:13:14 lcprod sshd\[6913\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=200.111.137.132  user=root
Sep  3 14:13:16 lcprod sshd\[6913\]: Failed password for root from 200.111.137.132 port 44504 ssh2
Sep  3 14:22:50 lcprod sshd\[7801\]: Invalid user plotter from 200.111.137.132
Sep  3 14:22:50 lcprod sshd\[7801\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=200.111.137.132
Sep  3 14:22:52 lcprod sshd\[7801\]: Failed password for invalid user plotter from 200.111.137.132 port 59794 ssh2
2019-09-04 08:36:10
165.227.93.58 attackspam
Sep  3 23:30:43 yabzik sshd[6774]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=165.227.93.58
Sep  3 23:30:44 yabzik sshd[6774]: Failed password for invalid user victoria from 165.227.93.58 port 53058 ssh2
Sep  3 23:35:07 yabzik sshd[8297]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=165.227.93.58
2019-09-04 08:52:37
66.155.4.213 attackbotsspam
2019-09-04T00:10:26.073162abusebot-5.cloudsearch.cf sshd\[31136\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=66.155.4.213  user=root
2019-09-04 08:43:34
180.254.251.252 attackbots
Looking for /backupadm.sql, Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0
2019-09-04 08:48:13
75.87.52.203 attackspam
Sep  3 14:15:34 hanapaa sshd\[24841\]: Invalid user ftpuser from 75.87.52.203
Sep  3 14:15:34 hanapaa sshd\[24841\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=rrcs-75-87-52-203.sw.biz.rr.com
Sep  3 14:15:35 hanapaa sshd\[24841\]: Failed password for invalid user ftpuser from 75.87.52.203 port 49884 ssh2
Sep  3 14:20:06 hanapaa sshd\[25232\]: Invalid user miao from 75.87.52.203
Sep  3 14:20:06 hanapaa sshd\[25232\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=rrcs-75-87-52-203.sw.biz.rr.com
2019-09-04 08:23:09
46.25.245.92 attackbotsspam
2019-09-04T00:27:11.452681abusebot-8.cloudsearch.cf sshd\[15623\]: Invalid user medved from 46.25.245.92 port 49580
2019-09-04 08:47:09
218.98.26.183 attackspambots
19/9/3@19:50:15: FAIL: IoT-SSH address from=218.98.26.183
...
2019-09-04 08:33:43
195.13.198.164 attackspam
19/9/3@14:34:00: FAIL: Alarm-Intrusion address from=195.13.198.164
...
2019-09-04 08:52:07
191.53.58.91 attack
$f2bV_matches
2019-09-04 08:45:26
49.234.62.55 attackbotsspam
Sep  3 21:07:09 localhost sshd\[110926\]: Invalid user amon from 49.234.62.55 port 51148
Sep  3 21:07:09 localhost sshd\[110926\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.234.62.55
Sep  3 21:07:11 localhost sshd\[110926\]: Failed password for invalid user amon from 49.234.62.55 port 51148 ssh2
Sep  3 21:10:52 localhost sshd\[111146\]: Invalid user sprd!@\#$%sapphire from 49.234.62.55 port 55070
Sep  3 21:10:52 localhost sshd\[111146\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.234.62.55
...
2019-09-04 08:46:53
218.92.0.135 attackbots
web-1 [ssh] SSH Attack
2019-09-04 08:40:38
68.183.193.46 attackbots
Sep  4 00:47:07 hb sshd\[30824\]: Invalid user zs from 68.183.193.46
Sep  4 00:47:07 hb sshd\[30824\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=68.183.193.46
Sep  4 00:47:09 hb sshd\[30824\]: Failed password for invalid user zs from 68.183.193.46 port 38158 ssh2
Sep  4 00:51:04 hb sshd\[31214\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=68.183.193.46  user=root
Sep  4 00:51:05 hb sshd\[31214\]: Failed password for root from 68.183.193.46 port 54388 ssh2
2019-09-04 08:56:18
84.201.165.126 attack
Sep  3 14:33:41 aiointranet sshd\[5040\]: Invalid user test from 84.201.165.126
Sep  3 14:33:41 aiointranet sshd\[5040\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=84.201.165.126
Sep  3 14:33:44 aiointranet sshd\[5040\]: Failed password for invalid user test from 84.201.165.126 port 37526 ssh2
Sep  3 14:37:38 aiointranet sshd\[5379\]: Invalid user sirene from 84.201.165.126
Sep  3 14:37:38 aiointranet sshd\[5379\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=84.201.165.126
2019-09-04 08:38:08

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