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 AS38391 Korea Telecom 2,097,152
121.160.0.0/11 AS38087 Korea Telecom 2,097,152
121.160.0.0/11 AS38105 Korea Telecom 2,097,152
121.160.0.0/11 AS38093 Korea Telecom 2,097,152
121.160.0.0/11 AS23591 Korea Telecom 2,097,152
121.160.0.0/11 AS23582 Korea Telecom 2,097,152
121.160.0.0/11 AS3786 Korea Telecom 2,097,152
121.160.0.0/11 AS38089 Korea Telecom 2,097,152
121.160.0.0/11 AS10167 Korea Telecom 2,097,152
121.160.0.0/11 AS18169 Korea Telecom 2,097,152
121.160.0.0/11 AS17862 Korea Telecom 2,097,152
121.160.0.0/11 AS17859 Korea Telecom 2,097,152
121.160.0.0/11 AS38392 Korea Telecom 2,097,152

Hosted domains

There are 6,267 domain names hosted across 1,862 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
121.134.128.35 yonseima.com 668
121.152.44.154 biosensor.or.kr 61
121.152.44.151 gspos.com 57
121.152.44.159 dongsang.kr 45
121.152.44.150 tapio.co.kr 41
121.152.44.152 damistory.co.kr 37
121.136.95.149 xn--om2b25an0oo0c0zr8ycl5c.com 36
121.157.1.100 ainftnews.io 30
121.152.44.156 chammedical.kr 29
121.152.44.191 sun-sea.kr 28
121.152.44.144 kanpan.org 26
121.156.65.161 unishare.co.kr 26
121.152.44.176 samjungglass.co.kr 26
121.152.44.178 daechuhanitea.com 23
121.152.44.173 mitory.com 22
121.152.44.169 kimhando.com 20
121.152.44.175 phic.kr 19
121.152.44.207 dosadog.com 19
121.152.44.167 ray-us.co.kr 18
121.156.104.1 elihigh.net 17

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

Pingable IPs

1,157,468 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
121.136.236.109 AS4766 Korea Telecom 2.88ms from Seoul, KR
121.136.250.224 AS4766 Korea Telecom 1.59ms from Seoul, KR
121.136.212.34 AS4766 Korea Telecom 1.69ms from Seoul, KR
121.137.17.55 AS4766 Korea Telecom 1.56ms from Seoul, KR
121.136.201.193 AS4766 Korea Telecom 1.64ms from Seoul, KR
121.136.243.48 AS4766 Korea Telecom 1.30ms from Seoul, KR
121.136.138.232 AS4766 Korea Telecom 1.48ms from Seoul, KR
121.136.231.138 AS4766 Korea Telecom 1.55ms from Seoul, KR
121.136.241.130 AS4766 Korea Telecom 1.69ms from Seoul, KR
121.136.237.141 AS4766 Korea Telecom 1.73ms from Seoul, KR
121.136.143.79 AS4766 Korea Telecom 1.54ms from Seoul, KR
121.136.175.51 AS4766 Korea Telecom 2.18ms from Seoul, KR
121.136.225.250 AS4766 Korea Telecom 1.57ms from Seoul, KR
121.136.191.97 AS4766 Korea Telecom 1.88ms from Seoul, KR
121.136.123.186 AS4766 Korea Telecom 1.52ms from Seoul, KR
121.136.205.202 AS4766 Korea Telecom 1.33ms from Seoul, KR
121.136.246.227 AS4766 Korea Telecom 1.49ms from Seoul, KR
121.137.30.237 AS4766 Korea Telecom 2.11ms from Seoul, KR
121.136.207.90 AS4766 Korea Telecom 1.97ms from Seoul, KR
121.137.20.47 AS4766 Korea Telecom 1.76ms from Seoul, KR
121.136.228.114 AS4766 Korea Telecom 3.10ms from Seoul, KR
121.136.110.129 AS4766 Korea Telecom 2.00ms from Seoul, KR
121.136.113.46 AS4766 Korea Telecom 2.04ms from Seoul, KR
121.136.180.1 AS4766 Korea Telecom 1.74ms from Seoul, KR
121.136.140.52 AS4766 Korea Telecom 1.46ms 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
52.255.175.43 AS8075 Microsoft Corporation 0.36ms from Ashburn, US
212.253.44.91 AS34984 Superonline Iletisim Hizmetleri A.S. 12.73ms from Athens, GR
162.207.182.219 AS7018 AT&T Enterprises, LLC 6.24ms from Atlanta, US
52.80.92.91 AS55960 Beijing Guanghuan Xinwang Digital 3.51ms from Beijing, CN
179.127.183.171 AS28343 UNIFIQUE TELECOMUNICACOES S/A 6.31ms from Chapeco, BR
84.146.145.235 AS3320 Deutsche Telekom AG 6.24ms from Duesseldorf, DE
190.92.239.219 AS136907 HUAWEI CLOUDS 1.05ms from Hong Kong, HK
18.163.232.107 AS16509 Amazon.com, Inc. 0.13ms from Hong Kong, HK
88.157.107.203 AS1897 NOS COMUNICACOES, S.A. 0.33ms from Lisbon, PT
109.147.122.187 AS2856 British Telecommunications PLC 2.38ms from London, GB
104.166.9.11 AS7352 WECOM LLC 10.70ms from Los Angeles, US
79.40.118.43 AS3269 Telecom Italia S.p.A. 1.85ms from Milan, IT
31.210.21.123 AS60798 Servereasy Srl 0.13ms from Milan, IT
160.94.26.155 AS217 University of Minnesota 0.57ms from Minneapolis, US
176.112.201.251 AS199274 Serveroid, LLC 1.27ms from Moscow, RU
188.255.13.139 AS42610 PJSC Rostelecom 1.29ms from Moscow, RU
58.146.58.123 AS17529 STARCAT CABLE NETWORK Co .,LTD. 5.30ms from Osaka, JP
118.153.90.219 AS2516 KDDI CORPORATION 10.51ms from Osaka, JP
91.160.153.171 AS12322 Free SAS 5.31ms from Paris, FR
189.84.89.123 AS28366 Marinter Telecom Ltda. 3.65ms from Rio de Janeiro, BR
76.14.61.219 AS11404 Wave Broadband 4.31ms from Santa Clara, US
103.48.206.43 AS134100 Express Data Co.,Ltd 11.53ms from Bangkok, TH
89.33.26.187 AS205275 ROMARG SRL 2.86ms from Bucharest, RO
104.10.140.91 AS7018 AT&T Enterprises, LLC 3.43ms from Houston, US
113.239.12.171 AS4837 CHINA UNICOM China169 Backbone 9.71ms from Liaoyang, CN

Traceroute

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

$
traceroute -a -n -q1 -f7 121.153.213.1
traceroute to 121.153.213.1 (121.153.213.1): 64 hops max, 52 byte packets
9 *
10 [AS4766] 121.153.213.1 5.443 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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