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 AS9647 Korea Telecom 2,097,152
121.160.0.0/11 AS38696 Korea Telecom 2,097,152
121.160.0.0/11 AS3786 Korea Telecom 2,097,152
121.160.0.0/11 AS10167 Korea Telecom 2,097,152
121.160.0.0/11 AS38089 Korea Telecom 2,097,152
121.160.0.0/11 AS38093 Korea Telecom 2,097,152
121.160.0.0/11 AS4766 Korea Telecom 2,097,152
121.160.0.0/11 AS9843 Korea Telecom 2,097,152
121.160.0.0/11 AS38415 Korea Telecom 2,097,152
121.160.0.0/11 AS17859 Korea Telecom 2,097,152
121.160.0.0/11 AS9684 Korea Telecom 2,097,152
121.160.0.0/11 AS38431 Korea Telecom 2,097,152
121.160.0.0/11 AS55615 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 AS38404 Korea Telecom 2,097,152
121.160.0.0/11 AS38427 Korea Telecom 2,097,152
121.160.0.0/11 AS55622 Korea Telecom 2,097,152
121.160.0.0/11 AS9708 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 AS38087 Korea Telecom 2,097,152
121.160.0.0/11 AS17862 Korea Telecom 2,097,152
121.160.0.0/11 AS23582 Korea Telecom 2,097,152
121.160.0.0/11 AS38391 Korea Telecom 2,097,152
121.224.0.0/12 AS137702 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

1,152,842 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
121.158.80.1 AS4766 Korea Telecom 3.27ms from Seoul, KR
121.158.153.83 AS4766 Korea Telecom 2.77ms from Seoul, KR
121.158.136.18 AS4766 Korea Telecom 2.85ms from Seoul, KR
121.158.8.68 AS4766 Korea Telecom 3.19ms from Seoul, KR
121.158.150.101 AS4766 Korea Telecom 2.83ms from Seoul, KR
121.158.60.173 AS4766 Korea Telecom 2.44ms from Seoul, KR
121.158.75.159 AS4766 Korea Telecom 5.71ms from Seoul, KR
121.158.78.205 AS4766 Korea Telecom 6.19ms from Seoul, KR
121.158.111.228 AS4766 Korea Telecom 4.33ms from Seoul, KR
121.158.160.155 AS4766 Korea Telecom 4.46ms from Seoul, KR
121.158.180.193 AS4766 Korea Telecom 3.09ms from Seoul, KR
121.158.45.172 AS4766 Korea Telecom 2.99ms from Seoul, KR
121.158.67.22 AS4766 Korea Telecom 2.95ms from Seoul, KR
121.158.57.1 AS4766 Korea Telecom 2.39ms from Seoul, KR
121.158.43.137 AS4766 Korea Telecom 2.84ms from Seoul, KR
121.158.21.67 AS4766 Korea Telecom 6.40ms from Seoul, KR
121.158.162.128 AS4766 Korea Telecom 2.69ms from Seoul, KR
121.158.174.35 AS4766 Korea Telecom 4.65ms from Seoul, KR
121.158.39.221 AS4766 Korea Telecom 5.11ms from Seoul, KR
121.158.151.56 AS4766 Korea Telecom 3.11ms from Seoul, KR
121.158.23.242 AS4766 Korea Telecom 4.23ms from Seoul, KR
121.158.1.191 AS4766 Korea Telecom 2.88ms from Seoul, KR
121.158.29.191 AS4766 Korea Telecom 5.36ms from Seoul, KR
121.158.77.97 AS4766 Korea Telecom 4.37ms from Seoul, KR
121.158.52.248 AS4766 Korea Telecom 2.70ms 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
2.204.226.123 AS3209 Vodafone GmbH 4.08ms from Berlin, DE
198.23.61.43 AS14555 LiquidNet US LLC 0.18ms from Chicago, US
59.89.169.43 AS9829 National Internet Backbone 5.20ms from Delhi, IN
38.22.139.171 AS11550 Smithville Digital, LLC 2.71ms from Indianapolis, US
42.59.242.107 AS4837 CHINA UNICOM China169 Backbone 7.12ms from Liaoyang, CN
81.130.107.187 AS2856 British Telecommunications PLC 10.46ms from London, GB
72.220.133.235 AS22773 Cox Communications Inc. 7.79ms from Los Angeles, US
23.50.152.75 AS16625 Akamai Technologies, Inc. 0.20ms from Milan, IT
15.236.105.139 AS16509 Amazon.com, Inc. 0.17ms from Paris, FR
3.237.31.139 AS14618 Amazon.com, Inc. 0.38ms from Reston, US
192.232.202.219 AS46606 Unified Layer 2.02ms from Salt Lake City, US
122.45.243.75 AS17858 LG POWERCOMM 3.98ms from Seoul, KR
201.13.36.155 AS27699 TELEFÔNICA BRASIL S.A 6.75ms from São Paulo, BR
114.27.193.251 AS3462 Data Communication Business Group 4.19ms from Taichung, TW
60.153.85.27 AS17676 SoftBank Corp. 3.10ms from Tokyo, JP
62.96.11.91 AS8220 COLT Technology Services Group Limited 1.59ms from Berlin, DE
181.98.90.91 AS7303 Telecom Argentina S.A. 7.90ms from Buenos Aires, AR
34.123.99.139 AS396982 Google LLC 0.11ms from Council Bluffs, US
86.150.237.107 AS2856 British Telecommunications PLC 1.52ms from London, GB
16.51.171.187 AS16509 Amazon.com, Inc. 0.66ms from Melbourne, AU
103.81.39.107 AS132770 Gazon Communications India Limited 2.73ms from Mumbai, IN
186.201.104.219 AS10429 TELEFÔNICA BRASIL S.A 0.99ms from Osasco, BR
13.64.53.75 AS8075 Microsoft Corporation 0.54ms from San Jose, US
170.176.158.251 AS16509 Amazon.com, Inc. 0.66ms from Boardman, US
221.8.10.171 AS4837 CHINA UNICOM China169 Backbone 0.80ms from Changchun, 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 121.148.71.254
traceroute to 121.148.71.254 (121.148.71.254): 64 hops max, 52 byte packets
7 [AS4766] 112.174.57.30 6.594 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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