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  2. 121.0.0.0/8
  3. AS4766  | 121.136.0.0/13

121.136.0.0/13

AS4766  ·  Korea Telecom

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Summary

Country South Korea
Domain kt.com
ASN AS4766
Parent Range 121.128.0.0/11
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 contain 121.136.0.0/13

Range ASN Company Num of IPs
121.128.0.0/11 AS9856 Korea Telecom 2,097,152
121.128.0.0/11 AS18333 Korea Telecom 2,097,152
121.128.0.0/11 AS38122 Korea Telecom 2,097,152
121.128.0.0/11 AS4766 Korea Telecom 2,097,152
121.128.0.0/11 AS9647 Korea Telecom 2,097,152
121.128.0.0/11 AS17588 Korea Telecom 2,097,152

BGP prefixes that are contained by 121.136.0.0/13

Range ASN Company Num of IPs
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
121.139.137.0/24 AS3786 Eseuaitissi jusikhoesa 256
121.141.101.0/24 AS9776 (ju)ibigukmindeu 256
121.137.151.0/24 AS4766 Bindaehakgyo 256
121.137.185.0/24 AS4766 Hangyeongdaehakgyo 256
121.140.76.0/24 AS9524 Korea Telecom 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
121.128.0.0/11 AS17588 Korea Telecom 2,097,152
121.128.0.0/11 AS38122 Korea Telecom 2,097,152
121.160.0.0/11 AS38089 Korea Telecom 2,097,152
121.128.0.0/11 AS18333 Korea Telecom 2,097,152
121.128.0.0/11 AS9856 Korea Telecom 2,097,152
121.128.0.0/11 AS9647 Korea Telecom 2,097,152
121.160.0.0/11 AS4766 Korea Telecom 2,097,152
121.128.0.0/11 AS4766 Korea Telecom 2,097,152
121.224.0.0/12 AS4134 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 AS146966 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 AS137699 CHINANET jiangsu province network 1,048,576
121.208.0.0/12 AS1221 Telstra Limited 1,048,576
121.224.0.0/12 AS137702 CHINANET jiangsu province network 1,048,576
121.224.0.0/12 AS134770 CHINANET jiangsu province network 1,048,576
121.224.0.0/12 AS137697 CHINANET jiangsu province network 1,048,576
121.112.0.0/13 AS4713 NTT DOCOMO BUSINESS,Inc. 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
121.8.0.0/13 AS136199 CHINANET Guangdong province network 524,288
121.8.0.0/13 AS4134 CHINANET Guangdong province network 524,288
121.8.0.0/13 AS140308 CHINANET Guangdong province network 524,288
121.204.0.0/14 AS4134 CHINANET Fujian province network 262,144
121.60.0.0/14 AS4134 CHINANET Hubei province network 262,144
121.24.0.0/14 AS4837 China Unicom Hebei province network 262,144
121.32.0.0/14 AS4134 CHINANET Guangdong province network 262,144
121.64.0.0/14 AS3786 LG DACOM Corporation 262,144
121.60.0.0/14 AS148981 CHINANET Hubei province network 262,144
121.64.0.0/14 AS17598 LG DACOM Corporation 262,144
121.248.0.0/14 AS4538 China Education and Research Network 262,144
121.40.0.0/14 AS37963 Aliyun Computing Co., LTD 262,144
121.80.0.0/14 AS17511 OPTAGE Inc. 262,144
121.196.0.0/14 AS37963 Aliyun Computing Co., LTD 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
121.204.0.0/14 AS133774 CHINANET Fujian province network 262,144
121.64.0.0/14 AS23555 LG DACOM Corporation 262,144
121.84.0.0/14 AS17511 OPTAGE Inc. 262,144
121.64.0.0/14 AS17586 LG DACOM Corporation 262,144
121.124.0.0/15 AS9318 SK Broadband Co Ltd 131,072
121.44.0.0/15 AS4739 iiNet Limited 131,072
121.96.0.0/15 AS6648 Bayan Telecommunications Incorporated 131,072
121.2.0.0/15 AS2527 Sony Network Communications Inc. 131,072
121.4.0.0/15 AS132203 Tencent cloud computing (Beijing) Co., Ltd. 131,072
121.44.0.0/15 AS7545 iiNet Limited 131,072
121.202.0.0/15 AS17924 SmarTone Mobile Communications Ltd 131,072
121.28.0.0/15 AS4837 China Unicom Hebei province network 131,072
121.48.0.0/15 AS4538 China Education and Research Network 131,072

Hosted domains

There are 1,496 domain names hosted across 605 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
121.140.37.75 viewdio.net 61
121.141.70.24 kr-mc.kr 13
121.138.248.148 asiawmscog.org 11
121.136.95.147 yangguvalleymall.co.kr 10
121.138.248.69 wmcoverseas.org 9
121.142.12.176 alltake.shop 6
121.140.151.252 mcnex.kr 6
121.140.201.137 gapyeongmarket.com 5
121.142.65.227 liveme.co.kr 5
121.141.19.228 dreamlabs.co.kr 5
121.138.171.203 edu.xn--3e0b707e 5
121.138.161.96 winnerbrothers.org 5
121.143.208.181 ajp.kr 4
121.139.19.60 smartfiremon.com 4
121.140.139.28 kgesu.com 4
121.137.243.141 bikespec.co.kr 4
121.137.47.174 clevics.ai 4
121.138.85.77 smartbuoy.kr 3
121.140.19.226 knwill.or.kr 3
121.137.199.56 afptech.kr 3

Hosted domains API

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Useful for Cybersecurity
Read more

Pingable IPs

284,180 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
121.142.166.224 AS4766 Korea Telecom 1.46ms from Seoul, KR
121.142.143.170 AS4766 Korea Telecom 1.43ms from Seoul, KR
121.142.84.242 AS4766 Korea Telecom 1.33ms from Seoul, KR
121.142.127.39 AS4766 Korea Telecom 1.54ms from Seoul, KR
121.142.107.158 AS4766 Korea Telecom 1.55ms from Seoul, KR
121.142.93.153 AS4766 Korea Telecom 1.80ms from Seoul, KR
121.142.225.32 AS4766 Korea Telecom 1.40ms from Seoul, KR
121.142.116.23 AS4766 Korea Telecom 1.79ms from Seoul, KR
121.142.88.40 AS4766 Korea Telecom 1.39ms from Seoul, KR
121.142.178.2 AS4766 Korea Telecom 1.58ms from Seoul, KR
121.142.142.36 AS4766 Korea Telecom 1.41ms from Seoul, KR
121.142.128.254 AS4766 Korea Telecom 1.71ms from Seoul, KR
121.142.198.104 AS4766 Korea Telecom 1.53ms from Seoul, KR
121.142.109.146 AS4766 Korea Telecom 1.48ms from Seoul, KR
121.142.222.163 AS4766 Korea Telecom 2.17ms from Seoul, KR
121.142.86.254 AS4766 Korea Telecom 2.12ms from Seoul, KR
121.142.136.175 AS4766 Korea Telecom 1.51ms from Seoul, KR
121.142.133.153 AS4766 Korea Telecom 1.45ms from Seoul, KR
121.142.170.71 AS4766 Korea Telecom 1.53ms from Seoul, KR
121.142.190.225 AS4766 Korea Telecom 1.09ms from Seoul, KR
121.142.221.143 AS4766 Korea Telecom 1.46ms from Seoul, KR
121.142.77.7 AS4766 Korea Telecom 1.77ms from Seoul, KR
121.142.124.107 AS4766 Korea Telecom 1.44ms from Seoul, KR
121.142.114.78 AS4766 Korea Telecom 1.65ms from Seoul, KR
121.142.197.84 AS4766 Korea Telecom 1.59ms 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
185.224.238.93 AS8368 BENESOL BACKBONE 0.96ms from Amsterdam, NL
94.71.213.157 AS6799 Ote SA (Hellenic Telecommunications Organisation) 1.53ms from Athens, GR
1.24.218.157 AS139007 UNICOM InnerMongolia province network 10.76ms from Beijing, CN
187.6.208.189 AS8167 V tal 3.92ms from Brasilia, BR
174.34.164.253 AS27411 Leaseweb USA, Inc. 1.41ms from Chicago, US
67.176.71.61 AS7922 Comcast Cable Communications, LLC 3.78ms from Denver, US
217.82.180.141 AS3320 Deutsche Telekom AG 3.63ms from Duesseldorf, DE
195.52.43.45 AS12312 ecotel communication ag 0.61ms from Frankfurt am Main, DE
112.79.41.13 AS38266 Vodafone Idea Ltd 0.84ms from Kolkata, IN
70.36.123.141 AS22439 Perfect International, Inc 0.79ms from Los Angeles, US
86.248.48.253 AS3215 Orange S.A. 4.67ms from Marseille, FR
68.85.174.253 AS7922 Comcast Cable Communications, LLC 2.13ms from Murfreesboro, US
134.0.191.205 AS28885 OmanTel NAP 3.32ms from Muscat, OM
154.49.209.13 AS174 Cogent Communications, LLC 0.91ms from Paris, FR
20.114.80.141 AS8075 Microsoft Corporation 0.21ms from San Antonio, US
198.199.100.13 AS14061 DigitalOcean, LLC 0.23ms from Santa Clara, US
124.221.225.205 AS45090 Shenzhen Tencent Computer Systems Company Limited 0.72ms from Shanghai, CN
165.156.46.13 AS30437 General Electric Company 0.35ms from Singapore, SG
77.53.222.173 AS29518 Bredband2 AB 12.01ms from Stockholm, SE
54.238.229.189 AS16509 Amazon.com, Inc. 0.29ms from Tokyo, JP
188.168.231.253 AS15774 Limited Liability Company "TTK-Svyaz" 1.03ms from Yekaterinburg, RU
16.145.30.189 AS16509 Amazon.com, Inc. 0.11ms from Boardman, US
27.32.15.221 AS7545 TPG Telecom Limited 0.69ms from Brisbane, AU
68.65.177.205 AS46449 Astrea 15.66ms from Chicago, US
34.30.252.109 AS396982 Google LLC 0.12ms from Council Bluffs, US

Traceroute

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

$
traceroute -a -n -q1 -f7 121.136.32.80
traceroute to 121.136.32.80 (121.136.32.80): 64 hops max, 52 byte packets
8 *
9 *
10 [AS4766] 121.136.32.80 2.438 ms
Measurement taken from IPinfo ProbeNet in Seoul, KR
On

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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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