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 AS3786 Korea Telecom 2,097,152
121.160.0.0/11 AS38404 Korea Telecom 2,097,152
121.160.0.0/11 AS38431 Korea Telecom 2,097,152
121.160.0.0/11 AS17862 Korea Telecom 2,097,152
121.160.0.0/11 AS38427 Korea Telecom 2,097,152
121.160.0.0/11 AS10167 Korea Telecom 2,097,152
121.160.0.0/11 AS38392 Korea Telecom 2,097,152
121.160.0.0/11 AS38391 Korea Telecom 2,097,152
121.160.0.0/11 AS17859 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 AS9778 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 AS38696 Korea Telecom 2,097,152
121.160.0.0/11 AS9647 Korea Telecom 2,097,152
121.160.0.0/11 AS4766 Korea Telecom 2,097,152
121.160.0.0/11 AS55615 Korea Telecom 2,097,152
121.160.0.0/11 AS9843 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 AS55622 Korea Telecom 2,097,152
121.160.0.0/11 AS45399 Korea Telecom 2,097,152
121.160.0.0/11 AS9530 Korea Telecom 2,097,152
121.160.0.0/11 AS38093 Korea Telecom 2,097,152
121.224.0.0/12 AS146966 CHINANET jiangsu province network 1,048,576
121.224.0.0/12 AS4134 CHINANET jiangsu province network 1,048,576

Hosted domains

There are 5,742 domain names hosted across 1,897 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 koonsung.or.kr 312
121.140.43.236 jongbo.com 155
121.152.44.142 eunjaebaek.com 80
121.152.44.147 kwsprings.com 67
121.140.37.75 dreamspacer.net 62
121.152.44.193 setmission.com 51
121.152.44.179 ondokim.com 43
121.152.44.150 cd.or.kr 41
121.152.44.152 posthumantek.co.kr 37
121.152.44.171 kcsi.kr 33
121.152.44.180 krbird.co.kr 30
121.152.44.156 chammedical.kr 29
121.152.44.206 unidus.co.kr 28
121.152.44.199 kccsystem.co.kr 28
121.152.44.168 totalfl.com 27
121.152.44.173 chonparks.com 22
121.152.44.175 phic.kr 19
121.156.104.1 elihighkid.kr 17
121.152.44.174 rcm.pe.kr 16
121.152.44.162 princesspen.com 14

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

1,157,599 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
121.151.212.59 AS4766 Korea Telecom 6.52ms from Seoul, KR
121.151.145.50 AS4766 Korea Telecom 5.65ms from Seoul, KR
121.151.206.51 AS4766 Korea Telecom 6.85ms from Seoul, KR
121.151.95.177 AS4766 Korea Telecom 5.01ms from Seoul, KR
121.151.86.86 AS4766 Korea Telecom 4.96ms from Seoul, KR
121.151.234.37 AS4766 Korea Telecom 5.47ms from Seoul, KR
121.151.249.250 AS4766 Korea Telecom 5.74ms from Seoul, KR
121.151.161.218 AS4766 Korea Telecom 5.77ms from Seoul, KR
121.151.158.254 AS4766 Korea Telecom 6.18ms from Seoul, KR
121.151.83.42 AS4766 Korea Telecom 4.97ms from Seoul, KR
121.151.248.80 AS4766 Korea Telecom 5.41ms from Seoul, KR
121.151.94.131 AS4766 Korea Telecom 4.71ms from Seoul, KR
121.151.182.117 AS4766 Korea Telecom 6.42ms from Seoul, KR
121.151.140.193 AS4766 Korea Telecom 4.65ms from Seoul, KR
121.151.121.94 AS4766 Korea Telecom 5.14ms from Seoul, KR
121.151.97.158 AS4766 Korea Telecom 4.54ms from Seoul, KR
121.151.238.222 AS4766 Korea Telecom 4.52ms from Seoul, KR
121.151.106.247 AS4766 Korea Telecom 4.39ms from Seoul, KR
121.151.123.222 AS4766 Korea Telecom 4.91ms from Seoul, KR
121.151.163.191 AS4766 Korea Telecom 5.97ms from Seoul, KR
121.151.187.191 AS4766 Korea Telecom 6.16ms from Seoul, KR
121.151.197.185 AS4766 Korea Telecom 6.56ms from Seoul, KR
121.151.142.94 AS4766 Korea Telecom 5.77ms from Seoul, KR
121.151.87.120 AS4766 Korea Telecom 4.97ms from Seoul, KR
121.151.173.82 AS4766 Korea Telecom 5.90ms 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
48.214.2.171 AS8075 Microsoft Corporation 0.28ms from Boydton, US
156.204.221.139 AS8452 TE-AS 7.11ms from Cairo, EG
120.196.42.27 AS9808 China Mobile Communications Group Co., Ltd. 11.45ms from Guangzhou, CN
109.150.18.203 AS2856 British Telecommunications PLC 1.96ms from London, GB
37.103.56.219 AS1267 WIND TRE S.P.A. 4.94ms from Milan, IT
222.188.191.139 AS4134 CHINANET-BACKBONE 4.47ms from Nanjing, CN
98.7.61.219 AS12271 Charter Communications Inc 4.12ms from New York City, US
122.232.66.155 AS4134 CHINANET-BACKBONE 7.82ms from Ningbo, CN
49.212.173.251 AS9371 SAKURA Internet Inc. 0.35ms from Osaka, JP
67.254.203.171 AS12271 Charter Communications Inc 6.79ms from Piscataway, US
61.74.85.155 AS4766 Korea Telecom 1.28ms from Seoul, KR
58.226.242.139 AS9318 SK Broadband Co Ltd 6.11ms from Seoul, KR
153.179.221.187 AS4713 NTT DOCOMO BUSINESS,Inc. 4.64ms from Tokyo, JP
73.89.204.59 AS7922 Comcast Cable Communications, LLC 7.91ms from Boston, US
118.121.1.155 AS4134 CHINANET-BACKBONE 4.70ms from Chengdu, CN
104.178.140.43 AS7018 AT&T Enterprises, LLC 18.73ms from Chicago, US
99.171.80.235 AS7018 AT&T Enterprises, LLC 2.69ms from Dallas, US
79.192.190.139 AS3320 Deutsche Telekom AG 7.84ms from Frankfurt am Main, DE
92.252.89.27 AS9145 EWE TEL GmbH 6.40ms from Hamburg, DE
18.166.245.171 AS16509 Amazon.com, Inc. 0.12ms from Hong Kong, HK
83.56.10.251 AS3352 TELEFONICA DE ESPANA S.A.U. 7.44ms from Madrid, ES
95.163.210.107 AS47764 LLC VK 0.79ms from Moscow, RU
106.200.233.11 AS24560 Bharti Airtel Ltd., Telemedia Services 14.99ms from Mumbai, IN
73.148.217.107 AS7922 Comcast Cable Communications, LLC 7.22ms from Orlando, US
107.180.90.123 AS398101 GoDaddy.com, LLC 0.91ms from Phoenix, US

Traceroute

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

$
traceroute -a -n -q1 121.159.145.1
traceroute to 121.159.145.1 (121.159.145.1): 64 hops max, 52 byte packets
1 [AS31898] 140.91.214.7 0.071 ms
3 *
4 *
8 [AS4766] 121.159.145.1 4.002 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.

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