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 of America (the)

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:
b
Dig info:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> 4.100.53.121
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 28019
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;4.100.53.121.			IN	A

;; AUTHORITY SECTION:
.			30	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2025020300 1800 900 604800 86400

;; Query time: 62 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Mon Feb 03 13:46:25 CST 2025
;; MSG SIZE  rcvd: 105
Host info
Host 121.53.100.4.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 121.53.100.4.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
138.94.160.58 attackbotsspam
Aug 31 00:16:56 rpi sshd[12820]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.94.160.58 
Aug 31 00:16:58 rpi sshd[12820]: Failed password for invalid user ubuntu from 138.94.160.58 port 57450 ssh2
2019-08-31 06:43:42
104.248.162.218 attackbots
2019-08-30T23:14:31.976614stark.klein-stark.info sshd\[11381\]: Invalid user timemachine from 104.248.162.218 port 33358
2019-08-30T23:14:31.980632stark.klein-stark.info sshd\[11381\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=104.248.162.218
2019-08-30T23:14:34.409199stark.klein-stark.info sshd\[11381\]: Failed password for invalid user timemachine from 104.248.162.218 port 33358 ssh2
...
2019-08-31 06:48:58
27.216.182.77 attackspam
Unauthorised access (Aug 30) SRC=27.216.182.77 LEN=40 TTL=49 ID=16800 TCP DPT=8080 WINDOW=64495 SYN 
Unauthorised access (Aug 30) SRC=27.216.182.77 LEN=40 TTL=49 ID=61156 TCP DPT=8080 WINDOW=51487 SYN 
Unauthorised access (Aug 29) SRC=27.216.182.77 LEN=40 TTL=49 ID=39401 TCP DPT=8080 WINDOW=31336 SYN 
Unauthorised access (Aug 28) SRC=27.216.182.77 LEN=40 TTL=49 ID=22243 TCP DPT=8080 WINDOW=56246 SYN 
Unauthorised access (Aug 27) SRC=27.216.182.77 LEN=40 TTL=49 ID=17956 TCP DPT=8080 WINDOW=23828 SYN 
Unauthorised access (Aug 27) SRC=27.216.182.77 LEN=40 TTL=49 ID=11076 TCP DPT=8080 WINDOW=23828 SYN 
Unauthorised access (Aug 26) SRC=27.216.182.77 LEN=40 TTL=49 ID=37498 TCP DPT=8080 WINDOW=51455 SYN
2019-08-31 06:51:32
82.200.139.170 attack
Aug 31 00:26:00 rpi sshd[12953]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=82.200.139.170 
Aug 31 00:26:02 rpi sshd[12953]: Failed password for invalid user dolph from 82.200.139.170 port 59378 ssh2
2019-08-31 06:38:04
191.241.225.238 attackspambots
[Aegis] @ 2019-08-30 21:06:52  0100 -> Attempted Administrator Privilege Gain: ET SCAN LibSSH Based Frequent SSH Connections Likely BruteForce Attack
2019-08-31 06:42:52
207.154.229.50 attackbotsspam
Aug 30 13:55:51 ny01 sshd[17446]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=207.154.229.50
Aug 30 13:55:53 ny01 sshd[17446]: Failed password for invalid user nexus from 207.154.229.50 port 43960 ssh2
Aug 30 13:59:58 ny01 sshd[18213]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=207.154.229.50
2019-08-31 06:41:16
45.125.223.28 attackspambots
MYH,DEF GET /downloader/
2019-08-31 07:01:33
5.196.88.110 attackspambots
Aug 30 11:28:49 lcdev sshd\[625\]: Invalid user ivan from 5.196.88.110
Aug 30 11:28:49 lcdev sshd\[625\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=ns375206.ip-5-196-88.eu
Aug 30 11:28:51 lcdev sshd\[625\]: Failed password for invalid user ivan from 5.196.88.110 port 59734 ssh2
Aug 30 11:33:32 lcdev sshd\[1082\]: Invalid user vnc from 5.196.88.110
Aug 30 11:33:32 lcdev sshd\[1082\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=ns375206.ip-5-196-88.eu
2019-08-31 06:51:48
79.137.77.131 attackbotsspam
Aug 31 00:12:38 rpi sshd[12743]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=79.137.77.131 
Aug 31 00:12:40 rpi sshd[12743]: Failed password for invalid user penrod from 79.137.77.131 port 36030 ssh2
2019-08-31 06:40:28
110.80.142.84 attackspambots
Tried sshing with brute force.
2019-08-31 06:43:07
106.12.109.188 attackbotsspam
Aug 30 13:34:55 TORMINT sshd\[24256\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.109.188  user=root
Aug 30 13:34:57 TORMINT sshd\[24256\]: Failed password for root from 106.12.109.188 port 34240 ssh2
Aug 30 13:38:06 TORMINT sshd\[24385\]: Invalid user ftpuser from 106.12.109.188
Aug 30 13:38:06 TORMINT sshd\[24385\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.109.188
...
2019-08-31 07:10:23
91.134.135.220 attackbotsspam
Aug 30 22:03:47 h2034429 sshd[5423]: Invalid user user from 91.134.135.220
Aug 30 22:03:47 h2034429 sshd[5423]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=91.134.135.220
Aug 30 22:03:49 h2034429 sshd[5423]: Failed password for invalid user user from 91.134.135.220 port 55320 ssh2
Aug 30 22:03:49 h2034429 sshd[5423]: Received disconnect from 91.134.135.220 port 55320:11: Bye Bye [preauth]
Aug 30 22:03:49 h2034429 sshd[5423]: Disconnected from 91.134.135.220 port 55320 [preauth]
Aug 30 22:13:01 h2034429 sshd[5590]: Invalid user sinusbot from 91.134.135.220
Aug 30 22:13:01 h2034429 sshd[5590]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=91.134.135.220


........
-----------------------------------------------
https://www.blocklist.de/en/view.html?ip=91.134.135.220
2019-08-31 06:34:08
51.83.73.48 attack
2019-08-30T21:44:03.392421hub.schaetter.us sshd\[26671\]: Invalid user xjyxmgtvzm from 51.83.73.48
2019-08-30T21:44:03.448134hub.schaetter.us sshd\[26671\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=48.ip-51-83-73.eu
2019-08-30T21:44:05.838224hub.schaetter.us sshd\[26671\]: Failed password for invalid user xjyxmgtvzm from 51.83.73.48 port 52640 ssh2
2019-08-30T21:51:16.096749hub.schaetter.us sshd\[26723\]: Invalid user gxxmtsoshu from 51.83.73.48
2019-08-30T21:51:16.130802hub.schaetter.us sshd\[26723\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=48.ip-51-83-73.eu
...
2019-08-31 07:12:02
106.52.18.180 attackbots
Aug 30 22:41:18 MK-Soft-VM6 sshd\[30495\]: Invalid user laura from 106.52.18.180 port 40520
Aug 30 22:41:18 MK-Soft-VM6 sshd\[30495\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.52.18.180
Aug 30 22:41:21 MK-Soft-VM6 sshd\[30495\]: Failed password for invalid user laura from 106.52.18.180 port 40520 ssh2
...
2019-08-31 06:57:13
51.255.42.250 attack
Aug 31 00:44:06 SilenceServices sshd[19760]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.255.42.250
Aug 31 00:44:07 SilenceServices sshd[19760]: Failed password for invalid user secretar from 51.255.42.250 port 51803 ssh2
Aug 31 00:52:34 SilenceServices sshd[26013]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.255.42.250
2019-08-31 06:53:49

Recently Reported IPs

15.117.9.102 148.214.158.126 249.42.103.192 131.123.15.251
162.192.66.64 135.14.186.168 189.98.5.35 213.72.179.184
255.91.11.18 126.20.86.10 173.41.244.87 117.252.178.202
207.102.58.17 141.39.28.191 222.78.63.137 210.130.28.73
129.92.9.159 82.78.201.231 134.154.214.212 19.143.222.207