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:        [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 are contained by 121.128.0.0/11

Range ASN Company Num of IPs
121.151.96.0/24 AS131792 Korea Telecom 256
121.128.97.0/24 AS152214 Korea Telecom 256
121.131.216.0/24 AS152214 Korea Telecom 256
121.144.249.0/24 AS18023 Haeyangdaehakgyo 256
121.144.250.0/24 AS18023 Haeyangdaehakgyo 256
121.139.137.0/24 AS3786 Eseuaitissi jusikhoesa 256
121.131.145.0/24 AS38126 (ju)koseu 256
121.133.198.0/24 AS38394 Korea Telecom 256
121.133.199.0/24 AS38395 Korea Telecom 256
121.133.203.0/24 AS38399 Korea Telecom 256
121.133.209.0/24 AS38412 Korea Telecom 256
121.135.53.0/24 AS38697 Hangyeongdaehakgyo 256
121.135.54.0/24 AS38697 Hangyeongdaehakgyo 256
121.135.55.0/24 AS38697 Hangyeongdaehakgyo 256
121.135.56.0/24 AS38697 Hangyeongdaehakgyo 256
121.135.147.0/24 AS46002 (ju)pyeonghwaijeu 256
121.135.148.0/24 AS46002 (ju)pyeonghwaijeu 256
121.137.151.0/24 AS4766 Bindaehakgyo 256
121.137.185.0/24 AS4766 Hangyeongdaehakgyo 256
121.141.42.0/24 AS4766 Korea Telecom 256
121.150.39.0/24 AS4766 Gyeongbukdaehakgyo 256
121.156.150.0/24 AS4766 Hangukgyotongdaehakgyo 256
121.156.153.0/24 AS4766 Hangukgyotongdaehakgyo 256
121.159.242.0/24 AS4766 KT 256
121.159.243.0/24 AS4766 KT 256
121.140.76.0/24 AS9524 Korea Telecom 256
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
121.157.108.0/24 AS9638 Korea Telecom 256
121.157.110.0/24 AS9638 Korea Telecom 256
121.157.111.0/24 AS9638 Korea Telecom 256
121.128.219.0/24 AS9647 Korea Telecom 256
121.135.246.0/24 AS9696 Korea Telecom 256
121.129.49.0/24 AS9776 (ju)gukmineunhaengbonjeom 256
121.141.101.0/24 AS9776 (ju)ibigukmindeu 256
121.144.148.0/24 AS9870 Donguidaehakgyo 256
121.144.149.0/24 AS9870 Donguidaehakgyo 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
121.160.0.0/11 AS38089 Korea Telecom 2,097,152
121.160.0.0/11 AS4766 Korea Telecom 2,097,152
121.224.0.0/12 AS4134 CHINANET jiangsu province network 1,048,576
121.224.0.0/12 AS137697 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 AS134756 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 AS140293 CHINANET jiangsu province network 1,048,576
121.208.0.0/12 AS1221 Telstra Limited 1,048,576
121.224.0.0/12 AS137699 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 AS137702 CHINANET jiangsu province network 1,048,576
121.8.0.0/13 AS135089 CHINANET Guangdong province network 524,288
121.8.0.0/13 AS136199 CHINANET Guangdong province network 524,288
121.8.0.0/13 AS140308 CHINANET Guangdong province network 524,288
121.8.0.0/13 AS4134 CHINANET Guangdong province network 524,288
121.16.0.0/13 AS4837 China Unicom Hebei province network 524,288
121.112.0.0/13 AS4713 NTT DOCOMO BUSINESS,Inc. 524,288
121.64.0.0/14 AS17586 LG DACOM Corporation 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 AS17598 LG DACOM Corporation 262,144
121.60.0.0/14 AS4134 CHINANET Hubei province network 262,144
121.64.0.0/14 AS3786 LG DACOM Corporation 262,144
121.32.0.0/14 AS4134 CHINANET Guangdong province network 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 AS4134 CHINANET Fujian province network 262,144
121.40.0.0/14 AS37963 Aliyun Computing Co., LTD 262,144
121.60.0.0/14 AS148981 CHINANET Hubei province network 262,144
121.80.0.0/14 AS17511 OPTAGE Inc. 262,144
121.60.0.0/14 AS137266 CHINANET Hubei province network 262,144
121.196.0.0/14 AS37963 Aliyun Computing Co., LTD 262,144
121.24.0.0/14 AS4837 China Unicom Hebei province network 262,144
121.204.0.0/14 AS133774 CHINANET Fujian province network 262,144
121.248.0.0/14 AS4538 China Education and Research Network 262,144
121.98.0.0/15 AS9790 Two Degrees Mobile Limited 131,072
121.76.0.0/15 AS9812 Oriental Cable Network Co., Ltd. 131,072
121.48.0.0/15 AS4538 China Education and Research Network 131,072
121.4.0.0/15 AS45090 Tencent cloud computing (Beijing) Co., Ltd. 131,072
121.2.0.0/15 AS2527 Sony Network Communications Inc. 131,072
121.194.0.0/15 AS4538 China Education and Research Network 131,072
121.44.0.0/15 AS4739 iiNet Limited 131,072

Hosted domains

There are 5,898 domain names hosted across 1,977 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP

Hosted domains API

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Useful for Cybersecurity
Read more

Pingable IPs

1,171,493 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
121.144.225.32 AS4766 Korea Telecom 6.73ms from Incheon, KR
121.144.96.163 AS4766 Korea Telecom 6.58ms from Incheon, KR
121.144.171.1 AS4766 Korea Telecom 6.12ms from Seoul, KR
121.144.162.248 AS4766 Korea Telecom 6.73ms from Seoul, KR
121.144.197.137 AS4766 Korea Telecom 6.22ms from Seoul, KR
121.144.173.5 AS4766 Korea Telecom 6.20ms from Seoul, KR
121.144.60.18 AS4766 Korea Telecom 6.20ms from Seoul, KR
121.144.198.178 AS4766 Korea Telecom 6.33ms from Seoul, KR
121.144.61.63 AS4766 Korea Telecom 6.62ms from Seoul, KR
121.144.188.242 AS4766 Korea Telecom 6.59ms from Seoul, KR
121.144.106.65 AS4766 Korea Telecom 6.68ms from Incheon, KR
121.144.250.1 AS18023 Korea Maritime and Ocean University 6.66ms from Seoul, KR
121.144.183.104 AS4766 Korea Telecom 6.31ms from Seoul, KR
121.144.59.132 AS4766 Korea Telecom 6.14ms from Seoul, KR
121.145.5.33 AS4766 Korea Telecom 6.53ms from Seoul, KR
121.145.21.213 AS4766 Korea Telecom 6.60ms from Seoul, KR
121.144.69.129 AS4766 Korea Telecom 6.58ms from Seoul, KR
121.144.120.246 AS4766 Korea Telecom 6.46ms from Seoul, KR
121.144.19.178 AS4766 Korea Telecom 6.64ms from Seoul, KR
121.144.38.210 AS4766 Korea Telecom 5.90ms from Incheon, KR
121.145.29.205 AS4766 Korea Telecom 6.75ms from Incheon, KR
121.144.238.89 AS4766 Korea Telecom 6.35ms from Incheon, KR
121.145.24.1 AS4766 Korea Telecom 6.71ms from Seoul, KR
121.144.55.1 AS4766 Korea Telecom 6.55ms from Seoul, KR
121.144.93.1 AS4766 Korea Telecom 6.60ms 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
73.180.189.123 AS7922 Comcast Cable Communications, LLC 7.39ms from Ashburn, US
194.156.227.123 AS16276 OVH SAS 0.12ms from Beauharnois, CA
43.196.103.43 AS55960 Beijing Guanghuan Xinwang Digital 3.81ms from Beijing, CN
177.20.132.11 AS262857 UNIVERSIDADE FEDERAL DO RIO GRANDE DO NORTE 3.28ms from Campina Grande, BR
98.27.137.43 AS10796 Charter Communications Inc 5.03ms from Cleveland, US
84.251.62.203 AS1759 Telia Finland Oyj 1.16ms from Helsinki, FI
213.199.51.27 AS51167 Contabo GmbH 0.20ms from Lauterbourg, FR
151.170.3.251 AS39326 Syntura Group Limited 8.98ms from Manchester, GB
73.5.145.187 AS7922 Comcast Cable Communications, LLC 6.90ms from Minneapolis, US
8.213.58.11 AS45102 Alibaba (US) Technology Co., Ltd. 0.72ms from Riyadh, SA
60.133.244.43 AS17676 SoftBank Corp. 2.98ms from Tokyo, JP
99.235.25.11 AS812 Rogers Communications Canada Inc. 5.78ms from Toronto, CA
201.146.129.59 AS8151 UNINET 7.68ms from Tucson, US
171.213.150.251 AS4134 CHINANET-BACKBONE 3.11ms from Chengdu, CN
68.51.112.59 AS7922 Comcast Cable Communications, LLC 9.85ms from Chicago, US
109.157.140.219 AS2856 British Telecommunications PLC 3.26ms from Erith, GB
98.168.213.11 AS22773 Cox Communications Inc. 4.74ms from Kansas City, US
178.251.108.123 AS35297 Dataline LLC 0.23ms from Kyiv, UA
2.125.177.11 AS5607 Sky UK Limited 5.66ms from London, GB
51.9.54.91 AS6871 Plusnet 11.28ms from London, GB
128.86.7.219 AS786 Jisc Services Limited 1.20ms from London, GB
105.172.85.123 AS37119 UNITEL SA 1.31ms from Luanda, AO
92.56.147.235 AS12479 Orange Espagne SA 2.59ms from Madrid, ES
165.234.22.59 AS19530 State of North Dakota, ITD 6.57ms from Minneapolis, US
125.105.150.75 AS4134 CHINANET-BACKBONE 9.42ms from Nanchang, CN

Traceroute

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

$
traceroute -a -n -q1 121.159.119.237
traceroute to 121.159.119.237 (121.159.119.237): 64 hops max, 52 byte packets
2 *
3 *
5 *
6 *
Measurement taken from IPinfo ProbeNet in Seoul, KR
On

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