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: Seongdong-gu

Region: Seoul Special City

Country: South Korea

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:
query : 221.159.100.100


# KOREAN(UTF8)

조회하신 IPv4주소는 한국인터넷진흥원으로부터 아래의 관리대행자에게 할당되었으며, 할당 정보는 다음과 같습니다.

[ 네트워크 할당 정보 ]
IPv4주소           : 221.144.0.0 - 221.159.255.255 (/12)
기관명             : 주식회사 케이티
서비스명           : KORNET
주소               : 경기도 성남시 분당구 불정로 90
우편번호           : 13606
할당일자           : 20030418

이름               : IP주소 담당자
전화번호           : +82-2-500-6630
전자우편           : kornet_ip@kt.com

조회하신 IPv4주소는 위의 관리대행자로부터 아래의 사용자에게 할당되었으며, 할당 정보는 다음과 같습니다.
--------------------------------------------------------------------------------


[ 네트워크 할당 정보 ]
IPv4주소           : 221.159.100.0 - 221.159.100.255 (/24)
기관명             : 주식회사 케이티
네트워크 구분      : INFRA
주소               : 경기도 성남시 분당구 불정로 90
우편번호           : 13606
할당내역 등록일    : 20260716

이름               : IP주소 담당자
전화번호           : +82-2-500-6630
전자우편           : kornet_ip@kt.com


# ENGLISH

KRNIC is not an ISP but a National Internet Registry similar to APNIC.

[ Network Information ]
IPv4 Address       : 221.144.0.0 - 221.159.255.255 (/12)
Organization Name  : Korea Telecom
Service Name       : KORNET
Address            : Gyeonggi-do Bundang-gu, Seongnam-si Buljeong-ro 90
Zip Code           : 13606
Registration Date  : 20030418

Name               : IP Manager
Phone              : +82-2-500-6630
E-Mail             : kornet_ip@kt.com

--------------------------------------------------------------------------------

More specific assignment information is as follows.

[ Network Information ]
IPv4 Address       : 221.159.100.0 - 221.159.100.255 (/24)
Organization Name  : Korea Telecom
Network Type       : INFRA
Address            : Gyeonggi-do Bundang-gu, Seongnam-si Buljeong-ro 90
Zip Code           : 13606
Registration Date  : 20260716

Name               : IP Manager
Phone              : +82-2-500-6630
E-Mail             : kornet_ip@kt.com


- KISA/KRNIC WHOIS Service -
Dig info:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> 221.159.100.100
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 19617
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;221.159.100.100.		IN	A

;; AUTHORITY SECTION:
.			30	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2026090102 1800 900 604800 86400

;; Query time: 29 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Wed Sep 02 08:07:38 CST 2026
;; MSG SIZE  rcvd: 108
Host info
Host 100.100.159.221.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 100.100.159.221.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
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196.52.43.94 attackbotsspam
port scan and connect, tcp 8443 (https-alt)
2019-11-05 22:55:16
185.52.2.165 attackspambots
WordPress login Brute force / Web App Attack on client site.
2019-11-05 22:59:27
46.38.144.146 attack
Nov  5 10:07:31 web1 postfix/smtpd[21262]: warning: unknown[46.38.144.146]: SASL LOGIN authentication failed: authentication failure
...
2019-11-05 23:07:46
132.255.187.240 attackspambots
email spam
2019-11-05 22:38:20
177.73.47.10 attackbots
email spam
2019-11-05 22:32:26
37.111.129.214 attack
Nov  5 15:32:42 gohoster postfix/smtpd[11542]: warning: unknown[37.111.129.214]: SASL CRAM-MD5 authentication failed: authentication failure
Nov  5 15:32:42 gohoster postfix/smtpd[11542]: warning: unknown[37.111.129.214]: SASL PLAIN authentication failed: authentication failure
Nov  5 15:32:42 gohoster postfix/smtpd[11542]: warning: unknown[37.111.129.214]: SASL LOGIN authentication failed: authentication failure
Nov  5 15:33:30 gohoster postfix/smtpd[11849]: warning: unknown[37.111.129.214]: SASL CRAM-MD5 authentication failed: authentication failure
Nov  5 15:33:30 gohoster postfix/smtpd[11849]: warning: unknown[37.111.129.214]: SASL PLAIN authentication failed: authentication failure

........
-----------------------------------------------
https://www.blocklist.de/en/view.html?ip=37.111.129.214
2019-11-05 22:53:32
137.59.243.42 attack
proto=tcp  .  spt=37665  .  dpt=25  .     (Found on   Blocklist de  Nov 04)     (340)
2019-11-05 22:37:52
116.6.218.30 attackbots
Unauthorised access (Nov  5) SRC=116.6.218.30 LEN=52 PREC=0x20 TTL=105 ID=30776 DF TCP DPT=445 WINDOW=8192 SYN
2019-11-05 23:00:15
142.93.106.197 attackspambots
port scan and connect, tcp 5432 (postgresql)
2019-11-05 23:12:29
170.238.46.6 attack
Nov  5 15:37:21 legacy sshd[22663]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=170.238.46.6
Nov  5 15:37:23 legacy sshd[22663]: Failed password for invalid user wang123 from 170.238.46.6 port 33676 ssh2
Nov  5 15:41:56 legacy sshd[22771]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=170.238.46.6
...
2019-11-05 22:51:12
96.77.77.53 attack
2019-11-05 07:45:09 H=(96-77-77-53-static.hfc.comcastbusiness.net) [96.77.77.53]:53996 I=[192.147.25.65]:25 F= rejected RCPT : RBL: found in thrukfz5b56tq6xao6odgdyjrq.zen.dq.spamhaus.net (127.0.0.3, 127.0.0.4) (https://www.spamhaus.org/query/ip/96.77.77.53)
2019-11-05 07:45:10 H=(96-77-77-53-static.hfc.comcastbusiness.net) [96.77.77.53]:53996 I=[192.147.25.65]:25 F= rejected RCPT : RBL: found in thrukfz5b56tq6xao6odgdyjrq.zen.dq.spamhaus.net (127.0.0.3, 127.0.0.4) (https://www.spamhaus.org/query/ip/96.77.77.53)
2019-11-05 07:45:11 H=(96-77-77-53-static.hfc.comcastbusiness.net) [96.77.77.53]:53996 I=[192.147.25.65]:25 F= rejected RCPT : RBL: found in thrukfz5b56tq6xao6odgdyjrq.zen.dq.spamhaus.net (127.0.0.4, 127.0.0.3) (https://www.spamhaus.org/sbl/query/SBLCSS)
...
2019-11-05 22:43:27
149.156.155.88 attackspam
2019-11-05T14:41:59.749553abusebot-8.cloudsearch.cf sshd\[24629\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=pyrtek.mech.pk.edu.pl  user=root
2019-11-05 22:46:07
114.134.187.130 attackspam
email spam
2019-11-05 22:39:44
138.197.180.102 attackspambots
Nov  5 12:41:21 ws12vmsma01 sshd[27085]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.197.180.102 
Nov  5 12:41:21 ws12vmsma01 sshd[27085]: Invalid user oracle from 138.197.180.102
Nov  5 12:41:24 ws12vmsma01 sshd[27085]: Failed password for invalid user oracle from 138.197.180.102 port 38910 ssh2
...
2019-11-05 22:52:33
182.61.36.38 attack
Nov  5 15:38:07 master sshd[28434]: Failed password for invalid user zy from 182.61.36.38 port 59824 ssh2
Nov  5 16:00:14 master sshd[28767]: Failed password for root from 182.61.36.38 port 53278 ssh2
Nov  5 16:06:26 master sshd[28779]: Failed password for root from 182.61.36.38 port 60160 ssh2
Nov  5 16:12:25 master sshd[28793]: Did not receive identification string from 182.61.36.38
Nov  5 16:19:29 master sshd[28814]: Failed password for invalid user juanda from 182.61.36.38 port 45664 ssh2
Nov  5 16:31:26 master sshd[29137]: Did not receive identification string from 182.61.36.38
Nov  5 16:37:56 master sshd[29152]: Failed password for root from 182.61.36.38 port 38068 ssh2
2019-11-05 22:47:45

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