1. All IP Ranges
  2. 121.0.0.0/8
  3. AS4766  | 121.128.0.0/11

121.128.0.0/11

AS4766  ·  Korea Telecom

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Summary

Country South Korea
Domain kt.com
ASN AS4766
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 are contained by 121.128.0.0/11

Range ASN Company Num of IPs
121.151.96.0/24 AS131792 Korea Telecom 256
121.128.97.0/24 AS152214 Korea Telecom 256
121.131.216.0/24 AS152214 Korea Telecom 256
121.144.249.0/24 AS18023 Haeyangdaehakgyo 256
121.144.250.0/24 AS18023 Haeyangdaehakgyo 256
121.139.137.0/24 AS3786 Eseuaitissi jusikhoesa 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
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
121.137.151.0/24 AS4766 Bindaehakgyo 256
121.137.185.0/24 AS4766 Hangyeongdaehakgyo 256
121.150.39.0/24 AS4766 Gyeongbukdaehakgyo 256
121.156.150.0/24 AS4766 Hangukgyotongdaehakgyo 256
121.156.153.0/24 AS4766 Hangukgyotongdaehakgyo 256
121.159.242.0/24 AS4766 KT 256
121.159.243.0/24 AS4766 KT 256
121.140.76.0/24 AS9524 Korea Telecom 256
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
121.157.108.0/24 AS9638 Korea Telecom 256
121.157.110.0/24 AS9638 Korea Telecom 256
121.157.111.0/24 AS9638 Korea Telecom 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
121.141.101.0/24 AS9776 (ju)ibigukmindeu 256
121.144.148.0/24 AS9870 Donguidaehakgyo 256
121.144.149.0/24 AS9870 Donguidaehakgyo 256

Nearby Ranges

BGP prefixes that overlap with 121.0.0.0/8

Range ASN Company Num of IPs
121.160.0.0/11 AS38089 Korea Telecom 2,097,152
121.160.0.0/11 AS23582 Korea Telecom 2,097,152
121.160.0.0/11 AS4766 Korea Telecom 2,097,152
121.224.0.0/12 AS134770 CHINANET jiangsu province network 1,048,576
121.224.0.0/12 AS4134 CHINANET jiangsu province network 1,048,576
121.208.0.0/12 AS1221 Telstra Limited 1,048,576
121.224.0.0/12 AS146966 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 AS137699 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 AS137702 CHINANET jiangsu province network 1,048,576
121.224.0.0/12 AS140292 CHINANET jiangsu province network 1,048,576
121.8.0.0/13 AS136199 CHINANET Guangdong province network 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
121.112.0.0/13 AS4713 NTT DOCOMO BUSINESS,Inc. 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
121.32.0.0/14 AS4134 CHINANET Guangdong 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
121.204.0.0/14 AS4134 CHINANET Fujian province network 262,144
121.24.0.0/14 AS4837 China Unicom Hebei province network 262,144
121.248.0.0/14 AS4538 China Education and Research Network 262,144
121.80.0.0/14 AS17511 OPTAGE Inc. 262,144
121.84.0.0/14 AS17511 OPTAGE Inc. 262,144
121.64.0.0/14 AS3786 LG DACOM Corporation 262,144
121.204.0.0/14 AS133774 CHINANET Fujian province network 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
121.196.0.0/14 AS37963 Aliyun Computing Co., LTD 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
121.64.0.0/14 AS23555 LG DACOM Corporation 262,144
121.64.0.0/14 AS17586 LG DACOM Corporation 262,144
121.48.0.0/15 AS4538 China Education and Research Network 131,072
121.194.0.0/15 AS4538 China Education and Research Network 131,072
121.44.0.0/15 AS4739 iiNet Limited 131,072
121.202.0.0/15 AS17924 SmarTone Mobile Communications Ltd 131,072
121.124.0.0/15 AS9318 SK Broadband Co Ltd 131,072
121.96.0.0/15 AS6648 Bayan Telecommunications Incorporated 131,072
121.4.0.0/15 AS132203 Tencent cloud computing (Beijing) Co., Ltd. 131,072
121.2.0.0/15 AS2527 Sony Network Communications Inc. 131,072
121.98.0.0/15 AS9790 Two Degrees Mobile Limited 131,072

Hosted domains

There are 5,727 domain names hosted across 1,904 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
121.143.79.109 xn--vb0b9h340bs1i0mk.kr 287
121.140.43.236 patientcare.net 153
121.134.128.35 cst1.net 95
121.152.44.142 xn--989az31ac7cgwgw2bwv4b.kr 80
121.140.37.75 mgd.co.kr 62
121.152.44.151 kangjaeg.com 56
121.152.44.193 clean-mom.com 51
121.152.44.146 me-too.kr 48
121.152.44.149 dwpefilm.co.kr 47
121.152.44.159 shimsora.com 45
121.152.44.160 thegreenbean.co.kr 44
121.152.44.150 kimsdesign.com 41
121.132.110.166 basicardio.org 39
121.152.44.161 dongaduct.com 35
121.152.44.180 newimplant.co.kr 29
121.152.44.206 uditech.co.kr 28
121.152.44.199 miraesearch.com 28
121.152.44.168 kfdi.kr 27
121.156.65.161 ilovegnature.net 26
121.152.44.192 artistsong.net 26

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

1,176,491 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
121.136.112.58 AS4766 Korea Telecom 1.76ms from Seoul, KR
121.136.242.141 AS4766 Korea Telecom 1.43ms from Seoul, KR
121.136.177.92 AS4766 Korea Telecom 1.52ms from Seoul, KR
121.136.117.199 AS4766 Korea Telecom 1.71ms from Seoul, KR
121.136.169.39 AS4766 Korea Telecom 1.86ms from Seoul, KR
121.136.137.32 AS4766 Korea Telecom 1.73ms from Seoul, KR
121.136.147.114 AS4766 Korea Telecom 1.90ms from Seoul, KR
121.136.135.73 AS4766 Korea Telecom 1.62ms from Seoul, KR
121.136.85.57 AS4766 Korea Telecom 1.89ms from Seoul, KR
121.136.220.186 AS4766 Korea Telecom 1.58ms from Seoul, KR
121.136.143.95 AS4766 Korea Telecom 1.68ms from Seoul, KR
121.136.122.2 AS4766 Korea Telecom 2.22ms from Seoul, KR
121.136.228.69 AS4766 Korea Telecom 3.15ms from Seoul, KR
121.136.129.76 AS4766 Korea Telecom 1.76ms from Seoul, KR
121.137.31.90 AS4766 Korea Telecom 1.54ms from Seoul, KR
121.137.41.136 AS4766 Korea Telecom 1.96ms from Seoul, KR
121.136.99.238 AS4766 Korea Telecom 1.87ms from Seoul, KR
121.136.91.97 AS4766 Korea Telecom 1.69ms from Seoul, KR
121.136.132.46 AS4766 Korea Telecom 1.81ms from Seoul, KR
121.136.187.106 AS4766 Korea Telecom 1.63ms from Seoul, KR
121.137.25.54 AS4766 Korea Telecom 1.33ms from Seoul, KR
121.136.150.125 AS4766 Korea Telecom 1.97ms from Seoul, KR
121.137.43.246 AS4766 Korea Telecom 1.84ms from Seoul, KR
121.137.42.205 AS4766 Korea Telecom 2.14ms from Seoul, KR
121.136.191.101 AS4766 Korea Telecom 2.02ms 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
75.245.133.187 AS6167 Verizon Business 16.24ms from Atlanta, US
52.32.75.171 AS16509 Amazon.com, Inc. 0.14ms from Boardman, US
20.141.26.203 AS8070 Microsoft Corporation 0.65ms from Boydton, US
68.97.250.75 AS22773 Cox Communications Inc. 6.99ms from Dallas, US
109.192.87.27 AS3209 Vodafone GmbH 9.37ms from Frankfurt am Main, DE
31.150.186.43 AS9145 EWE TEL GmbH 4.12ms from Hamburg, DE
31.51.100.123 AS2856 British Telecommunications PLC 3.92ms from London, GB
95.145.13.187 AS2856 British Telecommunications PLC 5.80ms from London, GB
151.95.63.91 AS1267 WIND TRE S.P.A. 13.07ms from Milan, IT
87.110.19.139 AS12578 SIA Tet 1.33ms from Riga, LV
118.36.160.11 AS4766 Korea Telecom 1.47ms from Seoul, KR
59.82.47.27 AS37963 Hangzhou Alibaba Advertising Co.,Ltd. 2.23ms from Shanghai, CN
220.132.169.219 AS3462 Data Communication Business Group 5.72ms from Taichung, TW
23.48.117.107 AS16625 Akamai Technologies, Inc. 0.28ms from Tokyo, JP
4.216.105.235 AS8075 Microsoft Corporation 0.18ms from Tokyo, JP
24.137.39.155 AS33541 Cable Cable Inc 15.13ms from Toronto, CA
44.255.166.75 AS16509 Amazon.com, Inc. 0.19ms from Boardman, US
183.67.79.91 AS4134 CHINANET-BACKBONE 7.28ms from Chongqing, CN
99.171.80.235 AS7018 AT&T Enterprises, LLC 2.85ms from Dallas, US
79.197.82.107 AS3320 Deutsche Telekom AG 5.84ms from Frankfurt am Main, DE
176.103.5.251 AS56812 CHP Zarko Alexandr Ivanovich 1.55ms from Kharkiv, UA
5.224.139.27 AS12430 VODAFONE ESPANA S.A.U. 12.98ms from Madrid, ES
79.158.144.139 AS3352 TELEFONICA DE ESPANA S.A.U. 10.39ms from Madrid, ES
71.206.74.59 AS7922 Comcast Cable Communications, LLC 5.39ms from Miami, US
98.116.165.171 AS701 Verizon Business 2.76ms from New York City, US

Traceroute

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

$
traceroute -a -n -q1 -f5 121.152.227.66
traceroute to 121.152.227.66 (121.152.227.66): 64 hops max, 52 byte packets
6 *
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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