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

Need more data or want to access it via API or data downloads? Sign up to get free access

Sign up for free ›

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 AS23582 Korea Telecom 2,097,152
121.160.0.0/11 AS4766 Korea Telecom 2,097,152
121.160.0.0/11 AS38089 Korea Telecom 2,097,152
121.208.0.0/12 AS1221 Telstra Limited 1,048,576
121.224.0.0/12 AS134770 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
121.224.0.0/12 AS137699 CHINANET jiangsu province network 1,048,576
121.224.0.0/12 AS4134 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 AS140292 CHINANET jiangsu province network 1,048,576
121.224.0.0/12 AS137702 CHINANET jiangsu province network 1,048,576
121.8.0.0/13 AS4134 CHINANET Guangdong province network 524,288
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 AS136199 CHINANET Guangdong province network 524,288
121.8.0.0/13 AS135089 CHINANET Guangdong province network 524,288
121.16.0.0/13 AS4837 China Unicom Hebei province network 524,288
121.64.0.0/14 AS17598 LG DACOM Corporation 262,144
121.60.0.0/14 AS4134 CHINANET Hubei province network 262,144
121.64.0.0/14 AS17586 LG DACOM Corporation 262,144
121.64.0.0/14 AS23555 LG DACOM Corporation 262,144
121.204.0.0/14 AS133774 CHINANET Fujian province network 262,144
121.80.0.0/14 AS17511 OPTAGE Inc. 262,144
121.204.0.0/14 AS133776 CHINANET Fujian province network 262,144
121.204.0.0/14 AS133775 CHINANET Fujian province network 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
121.84.0.0/14 AS17511 OPTAGE Inc. 262,144
121.204.0.0/14 AS4134 CHINANET Fujian province network 262,144
121.60.0.0/14 AS148981 CHINANET Hubei province network 262,144
121.64.0.0/14 AS3786 LG DACOM Corporation 262,144
121.40.0.0/14 AS37963 Aliyun Computing Co., LTD 262,144
121.248.0.0/14 AS4538 China Education and Research Network 262,144
121.196.0.0/14 AS37963 Aliyun Computing Co., LTD 262,144
121.76.0.0/15 AS9812 Oriental Cable Network Co., Ltd. 131,072
121.44.0.0/15 AS7545 iiNet Limited 131,072
121.194.0.0/15 AS4538 China Education and Research Network 131,072
121.202.0.0/15 AS17924 SmarTone Mobile Communications Ltd 131,072
121.48.0.0/15 AS4538 China Education and Research Network 131,072
121.44.0.0/15 AS4739 iiNet Limited 131,072
121.96.0.0/15 AS6648 Bayan Telecommunications Incorporated 131,072
121.124.0.0/15 AS9318 SK Broadband Co Ltd 131,072
121.2.0.0/15 AS2527 Sony Network Communications Inc. 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

1,170,339 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
121.153.215.222 AS4766 Korea Telecom 6.29ms from Seoul, KR
121.154.33.95 AS4766 Korea Telecom 4.46ms from Seoul, KR
121.154.135.167 AS4766 Korea Telecom 4.42ms from Seoul, KR
121.154.132.126 AS4766 Korea Telecom 4.39ms from Seoul, KR
121.153.242.193 AS4766 Korea Telecom 5.87ms from Seoul, KR
121.154.172.6 AS4766 Korea Telecom 4.02ms from Seoul, KR
121.153.211.1 AS4766 Korea Telecom 4.89ms from Seoul, KR
121.154.38.254 AS4766 Korea Telecom 4.71ms from Seoul, KR
121.154.138.158 AS4766 Korea Telecom 4.54ms from Seoul, KR
121.154.126.65 AS4766 Korea Telecom 4.36ms from Seoul, KR
121.153.212.97 AS4766 Korea Telecom 5.53ms from Seoul, KR
121.154.144.45 AS4766 Korea Telecom 4.37ms from Seoul, KR
121.154.46.217 AS4766 Korea Telecom 4.28ms from Seoul, KR
121.154.102.126 AS4766 Korea Telecom 4.48ms from Seoul, KR
121.153.214.187 AS4766 Korea Telecom 6.24ms from Seoul, KR
121.153.236.1 AS4766 Korea Telecom 5.77ms from Seoul, KR
121.154.162.14 AS4766 Korea Telecom 4.34ms from Seoul, KR
121.154.100.254 AS4766 Korea Telecom 4.39ms from Seoul, KR
121.154.84.56 AS4766 Korea Telecom 4.48ms from Seoul, KR
121.154.175.220 AS4766 Korea Telecom 4.59ms from Seoul, KR
121.154.71.254 AS4766 Korea Telecom 5.05ms from Seoul, KR
121.153.234.58 AS4766 Korea Telecom 5.66ms from Seoul, KR
121.154.165.52 AS4766 Korea Telecom 4.41ms from Seoul, KR
121.153.220.97 AS4766 Korea Telecom 5.02ms from Seoul, KR
121.154.168.16 AS4766 Korea Telecom 4.60ms 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
98.206.133.123 AS7922 Comcast Cable Communications, LLC 4.88ms from Chicago, US
183.67.79.91 AS4134 CHINANET-BACKBONE 7.28ms from Chongqing, CN
3.137.123.187 AS16509 Amazon.com, Inc. 0.13ms from Columbus, US
121.10.51.203 AS4134 CHINANET-BACKBONE 8.55ms from Guangzhou, CN
113.102.162.203 AS4134 CHINANET-BACKBONE 1.57ms from Guangzhou, CN
125.110.159.91 AS4134 CHINANET-BACKBONE 11.47ms from Hangzhou, CN
20.2.24.219 AS8075 Microsoft Corporation 0.31ms from Hong Kong, HK
37.20.211.27 AS12389 PJSC Rostelecom 12.95ms from Krasnoyarsk, RU
106.201.250.123 AS24560 Bharti Airtel Ltd., Telemedia Services 14.63ms from Mumbai, IN
110.73.210.107 AS4837 CHINA UNICOM China169 Backbone 6.37ms from Nanning, CN
119.179.164.123 AS4837 CHINA UNICOM China169 Backbone 10.33ms from Qingdao, CN
87.1.150.27 AS3269 Telecom Italia S.p.A. 5.09ms from Rome, IT
14.78.152.11 AS4766 Korea Telecom 8.54ms from Seoul, KR
221.44.130.155 AS17676 SoftBank Corp. 3.64ms 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
89.128.237.251 AS12479 Orange Espagne SA 6.11ms from Zaragoza, ES
31.215.147.187 AS5384 Emirates Internet 5.49ms from Al Fujairah City, AE
195.225.35.75 AS35024 Axit Automatisering B.V. 3.70ms from Amsterdam, NL
73.40.209.43 AS7922 Comcast Cable Communications, LLC 10.62ms from Ashburn, US
52.36.223.139 AS16509 Amazon.com, Inc. 0.16ms from Boardman, US
20.166.189.75 AS8075 Microsoft Corporation 0.39ms from Dublin, IE
186.43.240.91 AS27668 ETAPA EP 5.49ms from Guayaquil, EC
14.227.93.251 AS45899 VNPT Corp 5.69ms from Ho Chi Minh City, VN
203.153.38.171 AS24186 RailTel Corporation of India Ltd 1.04ms from Kolkata, IN

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?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

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

An API built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

Get Started for Free Contact Sales
IPinfo for all your IP geolocation needs

Our IP tools

Explore all tools
What is my IP

What is my IP

Test our data accuracy by viewing insights from your IP address.

See your IP address
Map IPs

Map IPs

Paste up to 500,000 IPs to see where they're located on a map.

Try Map IPs
Summarize IPs

Summarize IPs

Use our data visualization tool to create a visual overview of multiple IPs.

Try Summarize IPs