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:
b
Dig info:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> 104.21.66.155
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 63042
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.66.155.			IN	A

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

;; Query time: 23 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 10:16:36 CST 2022
;; MSG SIZE  rcvd: 106
Host info
Host 155.66.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 155.66.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
118.24.19.178 attack
Nov 10 15:40:59 MK-Soft-VM7 sshd[11999]: Failed password for root from 118.24.19.178 port 49158 ssh2
...
2019-11-10 23:25:28
111.231.69.18 attack
Nov 10 17:21:27 sauna sshd[112884]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=111.231.69.18
Nov 10 17:21:29 sauna sshd[112884]: Failed password for invalid user agent007 from 111.231.69.18 port 56318 ssh2
...
2019-11-10 23:47:26
27.62.113.219 attack
Unauthorized connection attempt from IP address 27.62.113.219 on Port 445(SMB)
2019-11-10 23:57:16
46.105.122.127 attackbots
Nov 10 19:57:24 gw1 sshd[19712]: Failed password for root from 46.105.122.127 port 36764 ssh2
...
2019-11-10 23:55:13
143.208.180.212 attack
Aug  8 05:43:56 microserver sshd[32224]: Invalid user csgoserver from 143.208.180.212 port 46182
Aug  8 05:43:56 microserver sshd[32224]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=143.208.180.212
Aug  8 05:43:58 microserver sshd[32224]: Failed password for invalid user csgoserver from 143.208.180.212 port 46182 ssh2
Aug  8 05:48:33 microserver sshd[32867]: Invalid user cleopatra from 143.208.180.212 port 41692
Aug  8 05:48:33 microserver sshd[32867]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=143.208.180.212
Aug  8 06:02:05 microserver sshd[34823]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=143.208.180.212  user=root
Aug  8 06:02:06 microserver sshd[34823]: Failed password for root from 143.208.180.212 port 55846 ssh2
Aug  8 06:06:43 microserver sshd[35471]: Invalid user wget from 143.208.180.212 port 50972
Aug  8 06:06:43 microserver sshd[35471]: pam_unix(sshd:auth): authent
2019-11-10 23:15:55
145.255.162.130 attack
Nov 10 15:28:26 mxgate1 postfix/postscreen[20780]: CONNECT from [145.255.162.130]:37266 to [176.31.12.44]:25
Nov 10 15:28:26 mxgate1 postfix/dnsblog[20781]: addr 145.255.162.130 listed by domain cbl.abuseat.org as 127.0.0.2
Nov 10 15:28:26 mxgate1 postfix/dnsblog[20782]: addr 145.255.162.130 listed by domain zen.spamhaus.org as 127.0.0.4
Nov 10 15:28:26 mxgate1 postfix/dnsblog[20782]: addr 145.255.162.130 listed by domain zen.spamhaus.org as 127.0.0.11
Nov 10 15:28:26 mxgate1 postfix/dnsblog[20785]: addr 145.255.162.130 listed by domain b.barracudacentral.org as 127.0.0.2
Nov 10 15:28:26 mxgate1 postfix/postscreen[20780]: PREGREET 23 after 0.2 from [145.255.162.130]:37266: EHLO [145.255.160.72]

Nov 10 15:28:26 mxgate1 postfix/postscreen[20780]: DNSBL rank 4 for [145.255.162.130]:37266
Nov x@x
Nov 10 15:28:27 mxgate1 postfix/postscreen[20780]: HANGUP after 0.9 from [145.255.162.130]:37266 in tests after SMTP handshake
Nov 10 15:28:27 mxgate1 postfix/postscreen[20780]: D........
-------------------------------
2019-11-10 23:44:18
123.206.51.192 attack
SSH Bruteforce attempt
2019-11-10 23:51:39
222.186.175.215 attackbots
Nov 10 16:28:19 mail sshd[1766]: Failed password for root from 222.186.175.215 port 65314 ssh2
Nov 10 16:28:24 mail sshd[1766]: Failed password for root from 222.186.175.215 port 65314 ssh2
Nov 10 16:28:28 mail sshd[1766]: Failed password for root from 222.186.175.215 port 65314 ssh2
Nov 10 16:28:31 mail sshd[1766]: Failed password for root from 222.186.175.215 port 65314 ssh2
2019-11-10 23:37:46
112.85.42.232 attackbotsspam
2019-11-10T15:14:27.005044abusebot-2.cloudsearch.cf sshd\[18505\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=112.85.42.232  user=root
2019-11-10 23:20:28
149.202.198.86 attackspambots
Nov 10 16:53:29 OPSO sshd\[25729\]: Invalid user user from 149.202.198.86 port 48309
Nov 10 16:53:29 OPSO sshd\[25729\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=149.202.198.86
Nov 10 16:53:31 OPSO sshd\[25729\]: Failed password for invalid user user from 149.202.198.86 port 48309 ssh2
Nov 10 16:55:33 OPSO sshd\[26190\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=149.202.198.86  user=root
Nov 10 16:55:35 OPSO sshd\[26190\]: Failed password for root from 149.202.198.86 port 46308 ssh2
2019-11-10 23:58:05
45.136.110.24 attackspam
Nov 10 15:58:06 mc1 kernel: \[4684171.673119\] \[UFW BLOCK\] IN=eth0 OUT= MAC=96:00:00:11:a9:7b:d2:74:7f:6e:37:e3:08:00 SRC=45.136.110.24 DST=159.69.205.51 LEN=40 TOS=0x00 PREC=0x00 TTL=244 ID=45806 PROTO=TCP SPT=47889 DPT=3207 WINDOW=1024 RES=0x00 SYN URGP=0 
Nov 10 16:05:32 mc1 kernel: \[4684618.127335\] \[UFW BLOCK\] IN=eth0 OUT= MAC=96:00:00:11:a9:7b:d2:74:7f:6e:37:e3:08:00 SRC=45.136.110.24 DST=159.69.205.51 LEN=40 TOS=0x00 PREC=0x00 TTL=244 ID=33486 PROTO=TCP SPT=47889 DPT=3048 WINDOW=1024 RES=0x00 SYN URGP=0 
Nov 10 16:07:34 mc1 kernel: \[4684739.448064\] \[UFW BLOCK\] IN=eth0 OUT= MAC=96:00:00:11:a9:7b:d2:74:7f:6e:37:e3:08:00 SRC=45.136.110.24 DST=159.69.205.51 LEN=40 TOS=0x00 PREC=0x00 TTL=243 ID=57040 PROTO=TCP SPT=47889 DPT=3194 WINDOW=1024 RES=0x00 SYN URGP=0 
...
2019-11-10 23:30:10
106.225.211.193 attack
2019-11-10T16:32:42.783815scmdmz1 sshd\[10274\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.225.211.193  user=root
2019-11-10T16:32:44.843920scmdmz1 sshd\[10274\]: Failed password for root from 106.225.211.193 port 57089 ssh2
2019-11-10T16:37:22.199422scmdmz1 sshd\[10680\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.225.211.193  user=root
...
2019-11-10 23:47:58
159.89.188.167 attackbotsspam
Nov 10 16:48:25 MK-Soft-Root2 sshd[9169]: Failed password for root from 159.89.188.167 port 53158 ssh2
...
2019-11-10 23:53:49
167.71.219.30 attackbots
Nov 10 17:29:32 server sshd\[31111\]: User root from 167.71.219.30 not allowed because listed in DenyUsers
Nov 10 17:29:32 server sshd\[31111\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=167.71.219.30  user=root
Nov 10 17:29:34 server sshd\[31111\]: Failed password for invalid user root from 167.71.219.30 port 48900 ssh2
Nov 10 17:34:29 server sshd\[12329\]: Invalid user abusdal from 167.71.219.30 port 32932
Nov 10 17:34:29 server sshd\[12329\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=167.71.219.30
2019-11-10 23:42:57
113.204.147.26 attackbotsspam
IMAP
2019-11-10 23:47:02

Recently Reported IPs

104.21.66.16 104.21.66.174 104.21.66.202 104.21.66.19
104.21.66.195 104.21.66.209 104.21.66.210 104.21.66.222
104.21.66.218 104.21.66.189 104.21.66.17 13.225.71.6
104.21.66.226 104.21.66.230 104.21.66.250 104.21.66.245
104.21.66.251 104.21.66.252 104.21.66.38 104.21.66.33