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:        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

Nearby Ranges

BGP prefixes that overlap with 121.0.0.0/8

Range ASN Company Num of IPs
121.160.0.0/11 AS38404 Korea Telecom 2,097,152
121.160.0.0/11 AS55622 Korea Telecom 2,097,152
121.160.0.0/11 AS17859 Korea Telecom 2,097,152
121.160.0.0/11 AS55615 Korea Telecom 2,097,152
121.160.0.0/11 AS17862 Korea Telecom 2,097,152
121.160.0.0/11 AS38415 Korea Telecom 2,097,152
121.160.0.0/11 AS23582 Korea Telecom 2,097,152
121.160.0.0/11 AS10167 Korea Telecom 2,097,152
121.160.0.0/11 AS38431 Korea Telecom 2,097,152
121.160.0.0/11 AS38427 Korea Telecom 2,097,152
121.160.0.0/11 AS3786 Korea Telecom 2,097,152
121.160.0.0/11 AS38391 Korea Telecom 2,097,152
121.160.0.0/11 AS38392 Korea Telecom 2,097,152
121.160.0.0/11 AS9778 Korea Telecom 2,097,152
121.160.0.0/11 AS9530 Korea Telecom 2,097,152
121.160.0.0/11 AS38089 Korea Telecom 2,097,152
121.160.0.0/11 AS38087 Korea Telecom 2,097,152
121.160.0.0/11 AS4766 Korea Telecom 2,097,152
121.160.0.0/11 AS38093 Korea Telecom 2,097,152
121.160.0.0/11 AS9708 Korea Telecom 2,097,152
121.160.0.0/11 AS9684 Korea Telecom 2,097,152
121.160.0.0/11 AS9843 Korea Telecom 2,097,152
121.160.0.0/11 AS45399 Korea Telecom 2,097,152
121.160.0.0/11 AS38696 Korea Telecom 2,097,152
121.160.0.0/11 AS9647 Korea Telecom 2,097,152
121.224.0.0/12 AS4134 CHINANET jiangsu province network 1,048,576
121.224.0.0/12 AS146966 CHINANET jiangsu province network 1,048,576

Hosted domains

There are 6,339 domain names hosted across 1,896 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
121.152.44.120 soldout-records.com 311
121.152.44.147 victoryclean.co.kr 67
121.152.44.155 pszoon.com 53
121.152.44.143 yhsangwoo.com 45
121.152.44.153 seoinind.net 36
121.136.95.149 xn--jj0by70a3ucuthb4b.com 36
121.152.44.180 naline.co.kr 30
121.152.44.206 datacell.co.kr 28
121.152.44.176 metaldaeyeon.com 27
121.152.44.192 peace-wave.or.kr 26
121.152.44.178 yanghwasun.com 23
121.152.44.175 phic.kr 19
121.152.44.167 artkm.net 17
121.152.44.189 cherryfilter.com 16
121.131.184.157 msit2030.or.kr 15
121.148.190.228 arjeskorea.com 15
121.133.156.11 woorifundservice.co.kr 15
121.152.44.162 isunlove.kr 14
121.156.65.145 xn--tv-fr2i83p9u5aqzo.com 13
121.138.248.35 watvnews.org 13

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

1,152,898 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
121.131.108.12 AS4766 Korea Telecom 1.28ms from Seoul, KR
121.131.35.184 AS4766 Korea Telecom 1.34ms from Seoul, KR
121.131.101.30 AS4766 Korea Telecom 1.23ms from Seoul, KR
121.131.83.58 AS4766 Korea Telecom 1.22ms from Seoul, KR
121.131.44.42 AS4766 Korea Telecom 1.41ms from Seoul, KR
121.130.248.72 AS4766 Korea Telecom 1.66ms from Seoul, KR
121.130.177.254 AS4766 Korea Telecom 1.64ms from Seoul, KR
121.131.98.61 AS4766 Korea Telecom 1.25ms from Seoul, KR
121.130.222.190 AS4766 Korea Telecom 1.43ms from Seoul, KR
121.130.172.78 AS4766 Korea Telecom 1.59ms from Seoul, KR
121.130.195.107 AS4766 Korea Telecom 1.45ms from Seoul, KR
121.130.186.27 AS4766 Korea Telecom 1.86ms from Seoul, KR
121.131.28.7 AS4766 Korea Telecom 1.37ms from Seoul, KR
121.131.38.62 AS4766 Korea Telecom 1.01ms from Seoul, KR
121.131.92.244 AS4766 Korea Telecom 1.25ms from Seoul, KR
121.130.130.223 AS4766 Korea Telecom 1.45ms from Seoul, KR
121.130.226.133 AS4766 Korea Telecom 1.52ms from Seoul, KR
121.130.233.47 AS4766 Korea Telecom 1.38ms from Seoul, KR
121.130.144.254 AS4766 Korea Telecom 1.74ms from Seoul, KR
121.131.113.89 AS4766 Korea Telecom 1.33ms from Seoul, KR
121.131.8.30 AS4766 Korea Telecom 1.30ms from Seoul, KR
121.130.140.14 AS4766 Korea Telecom 1.38ms from Seoul, KR
121.131.114.30 AS4766 Korea Telecom 1.30ms from Seoul, KR
121.130.152.46 AS4766 Korea Telecom 1.13ms from Seoul, KR
121.130.192.65 AS4766 Korea Telecom 1.74ms 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
196.131.242.251 AS24835 Vodafone Data 11.01ms from Cairo, EG
3.130.1.171 AS16509 Amazon.com, Inc. 0.17ms from Columbus, US
68.97.250.75 AS22773 Cox Communications Inc. 7.41ms from Dallas, US
99.171.80.235 AS7018 AT&T Enterprises, LLC 2.76ms from Dallas, US
84.134.171.11 AS3320 Deutsche Telekom AG 5.17ms from Frankfurt am Main, DE
82.63.122.43 AS3269 Telecom Italia S.p.A. 2.12ms from Milan, IT
178.168.223.171 AS25106 Mobile TeleSystems JLLC 4.06ms from Minsk, BY
104.112.122.27 AS16625 Akamai Technologies, Inc. 0.14ms from Osasco, BR
125.244.191.75 AS9316 DACOM-PUBNETPLUS 1.68ms from Seoul, KR
43.234.140.203 AS17506 ARTERIA Networks Corporation 16.81ms from Tokyo, JP
114.75.210.171 AS4804 Microplex PTY LTD 3.38ms from Brisbane, AU
95.76.138.171 AS12302 Vodafone Romania S.A. 6.74ms from Bucharest, RO
98.121.252.219 AS11426 Charter Communications Inc 10.35ms from Charlotte, US
125.67.112.171 AS4134 CHINANET-BACKBONE 8.06ms from Chengdu, CN
18.189.21.187 AS16509 Amazon.com, Inc. 0.67ms from Columbus, US
34.9.64.203 AS396982 Google LLC 0.13ms from Council Bluffs, US
79.192.190.139 AS3320 Deutsche Telekom AG 8.05ms from Frankfurt am Main, DE
122.235.197.11 AS4134 CHINANET-BACKBONE 6.91ms from Hangzhou, CN
54.209.176.11 AS14618 Amazon.com, Inc. 0.21ms from Reston, US
54.85.201.75 AS14618 Amazon.com, Inc. 0.23ms from Reston, US
9.142.198.11 AS11404 Wave Broadband 1.21ms from San Jose, US
62.212.41.235 AS34797 System Net Ltd 0.98ms from Tbilisi, GE
123.11.90.251 AS4837 CHINA UNICOM China169 Backbone 7.24ms from Zhengzhou, CN
92.97.42.139 AS5384 Emirates Internet 2.23ms from Al Fujairah City, AE
92.254.123.251 AS50266 Odido Netherlands B.V. 2.81ms from Amsterdam, NL

Traceroute

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

$
traceroute -a -n -q1 -f6 -m16 121.153.0.136
traceroute to 121.153.0.136 (121.153.0.136): 16 hops max, 52 byte packets
6 [AS16509] 54.239.121.168 128.922 ms
7 [AS4766] 211.47.31.65 129.053 ms
8 [AS4766] 112.188.242.204 130.627 ms
9 *
10 *
11 [AS4766] 112.174.117.42 135.518 ms
12 [AS4766] 112.188.137.230 133.443 ms
13 [AS4766] 112.188.132.230 135.339 ms
14 *
15 *
16 *
Measurement taken from IPinfo ProbeNet in Mumbai, IN
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.

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