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  2. 121.0.0.0/8
  3. AS4766  | 121.136.0.0/13

121.136.0.0/13

AS4766  ·  Korea Telecom

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Summary

Country South Korea
Domain kt.com
ASN AS4766
Parent Range 121.128.0.0/11
Registry APNIC
ID KORNET

WHOIS Details

inetnum:        121.128.0.0 - 121.159.255.255
netname:        KORNET
descr:          Korea Telecom
admin-c:        IM667-AP
tech-c:         IM667-AP
country:        KR
status:         ALLOCATED PORTABLE
mnt-by:         MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
changed:        hostmaster@nic.or.kr 20170203
source:         APNIC

irt:            IRT-KRNIC-KR
address:        Seoul Songpa-gu Jungdae-ro 135
e-mail:         hostmaster@nic.or.kr
abuse-mailbox:  hostmaster@nic.or.kr
admin-c:        IM574-AP
tech-c:         IM574-AP
auth:           # Filtered
mnt-by:         MNT-KRNIC-AP
changed:        hostmaster@nic.or.kr 20150513
source:         APNIC

person:         IP Manager
address:        Gyeonggi-do Bundang-gu, Seongnam-si Buljeong-ro 90
country:        KR
phone:          +82-2-500-6630
e-mail:         kornet_ip@kt.com
nic-hdl:        IM667-AP
mnt-by:         MNT-KRNIC-AP
changed:        hostmaster@nic.or.kr 20170328
source:         APNIC

inetnum:        121.128.0.0 - 121.159.255.255
netname:        KORNET-KR
descr:          Korea Telecom
country:        KR
admin-c:        IA9-KR
tech-c:         IM9-KR
status:         ALLOCATED PORTABLE
mnt-by:         MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
remarks:        This information has been partially mirrored by APNIC from
remarks:        KRNIC. To obtain more specific information, please use the
remarks:        KRNIC whois server at whois.krnic.net.
changed:        hostmaster@nic.or.kr
source:         KRNIC

person:         IP Manager
address:        Gyeonggi-do Bundang-gu, Seongnam-si Buljeong-ro 90
address:        
country:        KR
phone:          +82-2-500-6630
e-mail:         kornet_ip@kt.com
nic-hdl:        IA9-KR
mnt-by:         MNT-KRNIC-AP
changed:        hostmaster@nic.or.kr
source:         KRNIC

person:         IP Manager
address:        Gyeonggi-do Bundang-gu, Seongnam-si Buljeong-ro 90
address:        
country:        KR
phone:          +82-2-500-6630
e-mail:         kornet_ip@kt.com
nic-hdl:        IM9-KR
mnt-by:         MNT-KRNIC-AP
changed:        hostmaster@nic.or.kr
source:         KRNIC

Overlapping Ranges

BGP prefixes that contain 121.136.0.0/13

Range ASN Company Num of IPs
121.128.0.0/11 AS9856 Korea Telecom 2,097,152
121.128.0.0/11 AS18333 Korea Telecom 2,097,152
121.128.0.0/11 AS38122 Korea Telecom 2,097,152
121.128.0.0/11 AS4766 Korea Telecom 2,097,152
121.128.0.0/11 AS9647 Korea Telecom 2,097,152
121.128.0.0/11 AS17588 Korea Telecom 2,097,152

BGP prefixes that are contained by 121.136.0.0/13

Range ASN Company Num of IPs
121.141.229.0/24 AS9526 (ju)koseu 256
121.141.60.0/24 AS9526 (ju)koseu 256
121.140.97.0/24 AS9530 (ju) sinsegyeaissi 256
121.139.137.0/24 AS3786 Eseuaitissi jusikhoesa 256
121.141.101.0/24 AS9776 (ju)ibigukmindeu 256
121.137.151.0/24 AS4766 Bindaehakgyo 256
121.137.185.0/24 AS4766 Hangyeongdaehakgyo 256
121.140.76.0/24 AS9524 Korea Telecom 256

Nearby Ranges

BGP prefixes that overlap with 121.0.0.0/8

Range ASN Company Num of IPs
121.128.0.0/11 AS17588 Korea Telecom 2,097,152
121.160.0.0/11 AS38089 Korea Telecom 2,097,152
121.128.0.0/11 AS38122 Korea Telecom 2,097,152
121.128.0.0/11 AS4766 Korea Telecom 2,097,152
121.128.0.0/11 AS9647 Korea Telecom 2,097,152
121.160.0.0/11 AS4766 Korea Telecom 2,097,152
121.128.0.0/11 AS9856 Korea Telecom 2,097,152
121.160.0.0/11 AS23582 Korea Telecom 2,097,152
121.128.0.0/11 AS18333 Korea Telecom 2,097,152
121.224.0.0/12 AS4134 CHINANET jiangsu province network 1,048,576
121.224.0.0/12 AS137702 CHINANET jiangsu province network 1,048,576
121.224.0.0/12 AS134770 CHINANET jiangsu province network 1,048,576
121.224.0.0/12 AS140292 CHINANET jiangsu province network 1,048,576
121.224.0.0/12 AS134756 CHINANET jiangsu province network 1,048,576
121.224.0.0/12 AS137697 CHINANET jiangsu province network 1,048,576
121.224.0.0/12 AS146966 CHINANET jiangsu province network 1,048,576
121.224.0.0/12 AS137699 CHINANET jiangsu province network 1,048,576
121.208.0.0/12 AS1221 Telstra Limited 1,048,576
121.16.0.0/13 AS4837 China Unicom Hebei province network 524,288
121.8.0.0/13 AS135089 CHINANET Guangdong province network 524,288
121.8.0.0/13 AS140308 CHINANET Guangdong province network 524,288
121.8.0.0/13 AS136199 CHINANET Guangdong province network 524,288
121.112.0.0/13 AS4713 NTT DOCOMO BUSINESS,Inc. 524,288
121.8.0.0/13 AS4134 CHINANET Guangdong province network 524,288
121.32.0.0/14 AS4134 CHINANET Guangdong province network 262,144
121.64.0.0/14 AS3786 LG DACOM Corporation 262,144
121.60.0.0/14 AS4134 CHINANET Hubei province network 262,144
121.64.0.0/14 AS23555 LG DACOM Corporation 262,144
121.204.0.0/14 AS4134 CHINANET Fujian province network 262,144
121.204.0.0/14 AS133776 CHINANET Fujian province network 262,144
121.64.0.0/14 AS17598 LG DACOM Corporation 262,144
121.24.0.0/14 AS4837 China Unicom Hebei province network 262,144
121.40.0.0/14 AS37963 Aliyun Computing Co., LTD 262,144
121.204.0.0/14 AS133775 CHINANET Fujian province network 262,144
121.80.0.0/14 AS17511 OPTAGE Inc. 262,144
121.248.0.0/14 AS4538 China Education and Research Network 262,144
121.84.0.0/14 AS17511 OPTAGE Inc. 262,144
121.64.0.0/14 AS17586 LG DACOM Corporation 262,144
121.196.0.0/14 AS37963 Aliyun Computing Co., LTD 262,144
121.204.0.0/14 AS133774 CHINANET Fujian province network 262,144
121.60.0.0/14 AS148981 CHINANET Hubei province network 262,144
121.98.0.0/15 AS9790 Two Degrees Mobile Limited 131,072
121.2.0.0/15 AS2527 Sony Network Communications Inc. 131,072
121.124.0.0/15 AS9318 SK Broadband Co Ltd 131,072
121.44.0.0/15 AS7545 iiNet Limited 131,072
121.4.0.0/15 AS45090 Tencent cloud computing (Beijing) Co., Ltd. 131,072
121.4.0.0/15 AS132203 Tencent cloud computing (Beijing) Co., Ltd. 131,072
121.44.0.0/15 AS4739 iiNet Limited 131,072
121.194.0.0/15 AS4538 China Education and Research Network 131,072
121.28.0.0/15 AS4837 China Unicom Hebei province network 131,072

Hosted domains

There are 1,496 domain names hosted across 607 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
121.140.43.236 conn.co.kr 149
121.140.37.75 sinin.net 61
121.136.95.149 xn--h49a85uuzc4x3a.net 36
121.140.92.92 uencompany.co.kr 17
121.141.70.24 kr-mc.kr 13
121.138.248.144 ahnsahnghong.com 12
121.141.70.19 century.co.kr 12
121.138.248.67 weloveu.kr 11
121.136.95.147 yangguvalleymall.co.kr 10
121.141.70.17 kituramihomsys.kr 7
121.137.210.41 chosundagwa.com 6
121.141.137.64 valuetalk.co.kr 6
121.140.151.252 mcnex.com 6
121.143.143.57 workflows.ga 5
121.138.161.96 winnerbrothers.org 5
121.141.19.228 dreamlabs.co.kr 5
121.139.19.60 korems.net 4
121.141.225.9 ypdch.net 4
121.139.68.52 nextcom.co.kr 3
121.139.230.235 allro.co.kr 3

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.
Useful for Cybersecurity
Read more

Pingable IPs

287,619 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
121.136.42.38 AS4766 Korea Telecom 1.46ms from Seoul, KR
121.136.86.13 AS4766 Korea Telecom 1.41ms from Seoul, KR
121.136.64.141 AS4766 Korea Telecom 1.74ms from Seoul, KR
121.136.93.231 AS4766 Korea Telecom 1.48ms from Seoul, KR
121.136.6.154 AS4766 Korea Telecom 1.55ms from Seoul, KR
121.136.71.150 AS4766 Korea Telecom 1.50ms from Seoul, KR
121.136.7.216 AS4766 Korea Telecom 1.30ms from Seoul, KR
121.136.95.67 AS4766 Korea Telecom 1.48ms from Seoul, KR
121.136.78.1 AS4766 Korea Telecom 1.75ms from Seoul, KR
121.136.113.249 AS4766 Korea Telecom 2.04ms from Seoul, KR
121.136.28.225 AS4766 Korea Telecom 1.76ms from Seoul, KR
121.136.24.244 AS4766 Korea Telecom 2.04ms from Seoul, KR
121.136.84.171 AS4766 Korea Telecom 1.29ms from Seoul, KR
121.136.9.32 AS4766 Korea Telecom 1.58ms from Seoul, KR
121.136.130.97 AS4766 Korea Telecom 1.42ms from Seoul, KR
121.136.8.126 AS4766 Korea Telecom 1.24ms from Seoul, KR
121.136.122.206 AS4766 Korea Telecom 1.91ms from Seoul, KR
121.136.109.1 AS4766 Korea Telecom 1.64ms from Seoul, KR
121.136.21.205 AS4766 Korea Telecom 1.64ms from Seoul, KR
121.136.80.233 AS4766 Korea Telecom 1.28ms from Seoul, KR
121.136.101.173 AS4766 Korea Telecom 1.38ms from Seoul, KR
121.136.140.50 AS4766 Korea Telecom 1.36ms from Seoul, KR
121.136.74.219 AS4766 Korea Telecom 1.63ms from Seoul, KR
121.136.104.193 AS4766 Korea Telecom 1.56ms from Seoul, KR
121.136.27.171 AS4766 Korea Telecom 1.49ms from Seoul, KR

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address ASN Details
117.14.55.189 AS4837 CHINA UNICOM China169 Backbone 4.83ms from Beijing, CN
222.249.139.45 AS4847 China Networks Inter-Exchange 3.57ms from Beijing, CN
119.118.15.253 AS4837 CHINA UNICOM China169 Backbone 8.66ms from Harbin, CN
99.40.196.45 AS7018 AT&T Enterprises, LLC 2.84ms from Los Angeles, US
88.20.118.109 AS3352 TELEFONICA DE ESPANA S.A.U. 9.16ms from Madrid, ES
24.146.252.93 AS6128 Cablevision Systems Corp. 5.58ms from New York City, US
52.156.106.61 AS8075 Microsoft Corporation 0.65ms from Quincy, US
1.178.130.141 AS12975 PALTEL Autonomous System 3.26ms from Ramallah, PS
59.13.110.173 AS4766 Korea Telecom 2.33ms from Seoul, KR
20.116.154.125 AS8075 Microsoft Corporation 0.16ms from Toronto, CA
79.137.68.141 AS16276 OVH SAS 0.13ms from Warsaw, PL
222.91.157.125 AS4134 CHINANET-BACKBONE 2.13ms from Xi'an, CN
20.160.23.77 AS8075 Microsoft Corporation 0.27ms from Amsterdam, NL
101.18.107.189 AS4837 CHINA UNICOM China169 Backbone 9.72ms from Beijing, CN
208.2.211.29 AS174 Cogent Communications, LLC 9.66ms from Chicago, US
3.134.166.77 AS16509 Amazon.com, Inc. 0.12ms from Columbus, US
131.72.125.157 AS61727 SPN Telecom 17.82ms from Fortaleza, BR
90.100.128.237 AS3215 Orange S.A. 12.93ms from Frankfurt am Main, DE
93.222.101.109 AS3320 Deutsche Telekom AG 3.84ms from Frankfurt am Main, DE
37.53.139.61 AS6849 JSC "Ukrtelecom" 4.71ms from Kyiv, UA
8.30.243.29 AS23089 Hotwire Communications 1.15ms from Miami, US
23.112.117.93 AS7018 AT&T Enterprises, LLC 10.42ms from Miami, US
93.197.17.13 AS3320 Deutsche Telekom AG 2.85ms from Nuernberg, DE
31.211.211.237 AS33885 Telenor Sverige AB 0.77ms from Stockholm, SE
124.168.121.237 AS7545 TPG Telecom Limited 0.94ms from Sydney, AU

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.

$
traceroute -a -n -q1 121.140.81.254
traceroute to 121.140.81.254 (121.140.81.254): 64 hops max, 52 byte packets
3 *
4 *
6 *
7 *
Measurement taken from IPinfo ProbeNet in Seoul, KR
On

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