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 <<>> 104.21.66.208
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 33826
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.66.208.			IN	A

;; AUTHORITY SECTION:
.			432	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2022021700 1800 900 604800 86400

;; Query time: 65 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 02:01:57 CST 2022
;; MSG SIZE  rcvd: 106
Host info
Host 208.66.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 208.66.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
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port scan and connect, tcp 1433 (ms-sql-s)
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185.153.199.52 attackspam
Feb 20 06:14:15 debian-2gb-nbg1-2 kernel: \[4434866.530984\] \[UFW BLOCK\] IN=eth0 OUT= MAC=96:00:00:0e:18:f4:d2:74:7f:6e:37:e3:08:00 SRC=185.153.199.52 DST=195.201.40.59 LEN=40 TOS=0x00 PREC=0x00 TTL=244 ID=24499 PROTO=TCP SPT=46942 DPT=10014 WINDOW=1024 RES=0x00 SYN URGP=0
2020-02-20 16:08:32
178.128.153.185 attack
invalid login attempt (nisuser3)
2020-02-20 16:10:13
144.91.118.137 attack
Unauthorised access (Feb 20) SRC=144.91.118.137 LEN=52 TTL=120 ID=15520 DF TCP DPT=445 WINDOW=8192 SYN
2020-02-20 16:12:28
5.189.200.147 attack
B: Magento admin pass test (wrong country)
2020-02-20 15:55:20
59.127.231.200 attack
DATE:2020-02-20 05:52:34, IP:59.127.231.200, PORT:telnet Telnet brute force auth on honeypot server (epe-honey1-hq)
2020-02-20 15:48:32
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2020-02-20 16:00:27
59.7.30.30 attackspam
Honeypot attack, port: 81, PTR: PTR record not found
2020-02-20 16:13:12
222.186.173.183 attack
Feb 20 09:38:52 ift sshd\[18080\]: Failed password for root from 222.186.173.183 port 31434 ssh2Feb 20 09:39:03 ift sshd\[18080\]: Failed password for root from 222.186.173.183 port 31434 ssh2Feb 20 09:39:06 ift sshd\[18080\]: Failed password for root from 222.186.173.183 port 31434 ssh2Feb 20 09:39:12 ift sshd\[18124\]: Failed password for root from 222.186.173.183 port 3760 ssh2Feb 20 09:39:21 ift sshd\[18124\]: Failed password for root from 222.186.173.183 port 3760 ssh2
...
2020-02-20 15:40:23
49.88.112.70 attack
Feb 20 09:05:01 eventyay sshd[21488]: Failed password for root from 49.88.112.70 port 49167 ssh2
Feb 20 09:05:58 eventyay sshd[21493]: Failed password for root from 49.88.112.70 port 16581 ssh2
...
2020-02-20 16:14:46
90.74.173.2 attackspambots
Honeypot attack, port: 81, PTR: 2.pool90-74-173.dynamic.orange.es.
2020-02-20 16:10:58
125.42.192.46 attack
DATE:2020-02-20 06:22:05, IP:125.42.192.46, PORT:telnet - Telnet brute force auth on a honeypot server (epe-dc)
2020-02-20 16:09:23
51.91.19.92 attackbots
xmlrpc attack
2020-02-20 15:44:11
89.248.168.220 attackspambots
02/19/2020-23:54:18.892016 89.248.168.220 Protocol: 6 ET DROP Dshield Block Listed Source group 1
2020-02-20 15:56:48
218.154.181.253 attackbots
MultiHost/MultiPort Probe, Scan, Hack -
2020-02-20 16:15:15

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