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  2. 121.0.0.0/8
  3. AS4766  | 121.128.0.0/13

121.128.0.0/13

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:        [email protected] 20170203
source:         APNIC

irt:            IRT-KRNIC-KR
address:        Seoul Songpa-gu Jungdae-ro 135
e-mail:         [email protected]
abuse-mailbox:  [email protected]
admin-c:        IM574-AP
tech-c:         IM574-AP
auth:           # Filtered
mnt-by:         MNT-KRNIC-AP
changed:        [email protected] 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:         [email protected]
nic-hdl:        IM667-AP
mnt-by:         MNT-KRNIC-AP
changed:        [email protected] 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:        [email protected]
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:         [email protected]
nic-hdl:        IA9-KR
mnt-by:         MNT-KRNIC-AP
changed:        [email protected]
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:         [email protected]
nic-hdl:        IM9-KR
mnt-by:         MNT-KRNIC-AP
changed:        [email protected]
source:         KRNIC

Overlapping Ranges

BGP prefixes that contain 121.128.0.0/13

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

BGP prefixes that are contained by 121.128.0.0/13

Range ASN Company Num of IPs
121.128.97.0/24 AS152214 Korea Telecom 256
121.131.216.0/24 AS152214 Korea Telecom 256
121.135.56.0/24 AS38697 Hangyeongdaehakgyo 256
121.135.147.0/24 AS46002 (ju)pyeonghwaijeu 256
121.135.148.0/24 AS46002 (ju)pyeonghwaijeu 256
121.128.219.0/24 AS9647 Korea Telecom 256
121.135.246.0/24 AS9696 Korea Telecom 256
121.129.49.0/24 AS9776 (ju)gukmineunhaengbonjeom 256
121.131.145.0/24 AS38126 (ju)koseu 256
121.133.198.0/24 AS38394 Korea Telecom 256
121.133.199.0/24 AS38395 Korea Telecom 256
121.133.203.0/24 AS38399 Korea Telecom 256
121.133.209.0/24 AS38412 Korea Telecom 256
121.135.53.0/24 AS38697 Hangyeongdaehakgyo 256
121.135.54.0/24 AS38697 Hangyeongdaehakgyo 256
121.135.55.0/24 AS38697 Hangyeongdaehakgyo 256

Nearby Ranges

BGP prefixes that overlap with 121.0.0.0/8

Range ASN Company Num of IPs
121.128.0.0/11 AS38122 Korea Telecom 2,097,152
121.160.0.0/11 AS4766 Korea Telecom 2,097,152
121.128.0.0/11 AS17588 Korea Telecom 2,097,152
121.160.0.0/11 AS23582 Korea Telecom 2,097,152
121.128.0.0/11 AS4766 Korea Telecom 2,097,152
121.128.0.0/11 AS18333 Korea Telecom 2,097,152
121.128.0.0/11 AS9856 Korea Telecom 2,097,152
121.160.0.0/11 AS38089 Korea Telecom 2,097,152
121.128.0.0/11 AS9647 Korea Telecom 2,097,152
121.224.0.0/12 AS4134 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 AS137702 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
121.224.0.0/12 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 AS146966 CHINANET jiangsu province network 1,048,576
121.224.0.0/12 AS137697 CHINANET jiangsu province network 1,048,576
121.112.0.0/13 AS4713 NTT DOCOMO BUSINESS,Inc. 524,288
121.8.0.0/13 AS140308 CHINANET Guangdong province network 524,288
121.8.0.0/13 AS135089 CHINANET Guangdong province network 524,288
121.8.0.0/13 AS136199 CHINANET Guangdong province network 524,288
121.8.0.0/13 AS4134 CHINANET Guangdong province network 524,288
121.16.0.0/13 AS4837 China Unicom Hebei province network 524,288
121.204.0.0/14 AS4134 CHINANET Fujian province network 262,144
121.64.0.0/14 AS3786 LG DACOM Corporation 262,144
121.32.0.0/14 AS4134 CHINANET Guangdong province network 262,144
121.24.0.0/14 AS4837 China Unicom Hebei province network 262,144
121.60.0.0/14 AS4134 CHINANET Hubei province network 262,144
121.64.0.0/14 AS17598 LG DACOM Corporation 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
121.64.0.0/14 AS17586 LG DACOM Corporation 262,144
121.204.0.0/14 AS133774 CHINANET Fujian province network 262,144
121.64.0.0/14 AS23555 LG DACOM Corporation 262,144
121.204.0.0/14 AS133775 CHINANET Fujian province network 262,144
121.204.0.0/14 AS133776 CHINANET Fujian province network 262,144
121.84.0.0/14 AS17511 OPTAGE Inc. 262,144
121.40.0.0/14 AS37963 Aliyun Computing Co., LTD 262,144
121.60.0.0/14 AS148981 CHINANET Hubei province network 262,144
121.196.0.0/14 AS37963 Aliyun Computing Co., LTD 262,144
121.44.0.0/15 AS4739 iiNet Limited 131,072
121.48.0.0/15 AS4538 China Education and Research Network 131,072
121.2.0.0/15 AS2527 Sony Network Communications Inc. 131,072
121.4.0.0/15 AS132203 Tencent cloud computing (Beijing) Co., Ltd. 131,072
121.124.0.0/15 AS9318 SK Broadband Co Ltd 131,072
121.202.0.0/15 AS17924 SmarTone Mobile Communications Ltd 131,072
121.194.0.0/15 AS4538 China Education and Research Network 131,072
121.98.0.0/15 AS9790 Two Degrees Mobile Limited 131,072
121.4.0.0/15 AS45090 Tencent cloud computing (Beijing) Co., Ltd. 131,072

Hosted domains

There are 1,077 domain names hosted across 590 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
121.129.56.50 kfaedu.or.kr 8
121.129.210.102 xentestbed.com 8
121.131.26.52 momocozy.com 6
121.133.85.162 ieulmedicalclinic.com 6
121.128.84.36 highmountain.dev 5
121.134.42.114 veganciaga.com 5
121.128.35.83 elvenes.se 5
121.134.241.229 arpa.co.kr 5
121.128.176.35 seoul2027.day 4
121.133.129.189 b3x.app 4
121.130.229.204 15331611.com 4
121.133.133.245 sangwoo.kr 4
121.134.28.15 bmwfskfu.co.kr 3
121.131.219.24 minjuroad.or.kr 3
121.133.95.38 wiseservice.io 3
121.131.81.35 todaycleaning.co.kr 3
121.130.230.167 boktopia.net 3
121.135.196.87 kcim.co.kr 3
121.131.196.142 mgnetwork.co.kr 3
121.133.106.139 heonny.xyz 3

Hosted domains API

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Pingable IPs

266,813 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
121.135.216.40 AS4766 Korea Telecom 1.43ms from Seoul, KR
121.135.201.151 AS4766 Korea Telecom 1.17ms from Seoul, KR
121.135.227.211 AS4766 Korea Telecom 1.36ms from Seoul, KR
121.135.230.169 AS4766 Korea Telecom 0.95ms from Seoul, KR
121.135.212.254 AS4766 Korea Telecom 1.51ms from Seoul, KR
121.135.148.136 AS46002 PHIS 1.11ms from Seoul, KR
121.135.206.106 AS4766 Korea Telecom 1.08ms from Seoul, KR
121.135.149.254 AS4766 Korea Telecom 1.46ms from Seoul, KR
121.135.239.1 AS4766 Korea Telecom 1.65ms from Seoul, KR
121.135.238.113 AS4766 Korea Telecom 1.16ms from Seoul, KR
121.135.207.254 AS4766 Korea Telecom 1.10ms from Seoul, KR
121.135.176.94 AS4766 Korea Telecom 1.11ms from Seoul, KR
121.135.121.248 AS4766 Korea Telecom 1.81ms from Seoul, KR
121.135.116.1 AS4766 Korea Telecom 1.69ms from Seoul, KR
121.135.242.33 AS4766 Korea Telecom 1.16ms from Seoul, KR
121.135.112.1 AS4766 Korea Telecom 1.76ms from Seoul, KR
121.135.202.113 AS4766 Korea Telecom 0.95ms from Seoul, KR
121.135.185.1 AS4766 Korea Telecom 1.70ms from Seoul, KR
121.135.214.254 AS4766 Korea Telecom 1.56ms from Seoul, KR
121.135.135.218 AS4766 Korea Telecom 1.56ms from Seoul, KR
121.135.224.30 AS4766 Korea Telecom 1.42ms from Seoul, KR
121.135.250.38 AS4766 Korea Telecom 0.98ms from Seoul, KR
121.135.118.1 AS4766 Korea Telecom 3.07ms from Seoul, KR
121.135.141.225 AS4766 Korea Telecom 1.72ms from Seoul, KR
121.135.187.195 AS4766 Korea Telecom 0.97ms 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
170.223.197.77 AS40831 Mass General Brigham Incorporated 10.94ms from Ashburn, US
112.125.123.77 AS37963 Hangzhou Alibaba Advertising Co.,Ltd. 2.11ms from Beijing, CN
218.68.243.13 AS4837 CHINA UNICOM China169 Backbone 5.51ms from Beijing, CN
75.68.55.29 AS7922 Comcast Cable Communications, LLC 6.04ms from Boston, US
181.175.65.221 AS14522 SERVICIOS DE TELECOMUNICACIONES SETEL S.A. (XTRIM EC) 7.25ms from Guayaquil, EC
23.26.241.157 AS61317 Hivelocity LLC 0.21ms from Los Angeles, US
213.85.94.125 AS8615 "Central Telegraph" Public Joint-stock Company 1.86ms from Moscow, RU
45.235.219.13 AS268201 IGP TELECOMUNICAÇÕES LTDA 18.54ms from Osasco, BR
201.1.217.253 AS27699 TELEFÔNICA BRASIL S.A 6.38ms from Osasco, BR
72.70.174.141 AS701 Verizon Business 3.20ms from Philadelphia, US
64.40.111.77 AS14280 Ntirety, Inc. 3.55ms from Seattle, US
73.181.206.237 AS7922 Comcast Cable Communications, LLC 5.22ms from Seattle, US
32.223.219.253 AS46690 Southern New England Telephone Company and SNET America, Inc. 4.58ms from Secaucus, US
73.194.121.29 AS7922 Comcast Cable Communications, LLC 6.64ms from Secaucus, US
87.211.22.237 AS13127 Odido Netherlands B.V. 16.73ms from Amsterdam, NL
40.121.90.221 AS8075 Microsoft Corporation 0.41ms from Ashburn, US
76.97.220.29 AS7922 Comcast Cable Communications, LLC 5.33ms from Atlanta, US
80.80.84.93 AS6752 Andorra Telecom 4.12ms from Barcelona, ES
117.131.243.61 AS38019 tianjin Mobile Communication Company Limited 4.86ms from Beijing, CN
125.65.234.13 AS4134 CHINANET-BACKBONE 7.93ms from Chengdu, CN
119.7.173.13 AS4837 CHINA UNICOM China169 Backbone 6.12ms from Chengdu, CN
114.23.46.29 AS56030 Voyager Internet Ltd. 5.36ms from Christchurch, NZ
169.60.39.109 AS36351 IBM Cloud 0.81ms from Dallas, US
115.241.30.61 AS55836 Reliance Jio Infocomm Limited 3.26ms from Delhi, IN
83.113.145.141 AS3215 Orange S.A. 14.87ms from Frankfurt am Main, DE

Traceroute

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

$
traceroute -a -n -q1 121.130.46.44
traceroute to 121.130.46.44 (121.130.46.44): 64 hops max, 52 byte packets
2 *
3 *
4 [AS4766] 112.174.58.46 2.159 ms
5 *
7 *
8 [AS4766] 121.130.46.44 1.912 ms
Measurement taken from IPinfo ProbeNet in Seoul, KR
On

What are IP address ranges?

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Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

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