1. All IP Ranges
  2. 121.0.0.0/8
  3. 121.128.0.0/16
  4. AS9647  | 121.128.55.0/24

121.128.55.0/24

AS9647  ·  Seoul Metropolitan Government

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Summary

Country South Korea
Domain kt.com
ASN AS9647
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:        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

Overlapping Ranges

BGP prefixes that contain 121.128.55.0/24

Range ASN Company Num of IPs
121.128.0.0/11 AS131792 Korea Telecom 2,097,152
121.128.0.0/11 AS152214 Korea Telecom 2,097,152
121.128.0.0/11 AS17588 Korea Telecom 2,097,152
121.128.0.0/11 AS18023 Korea Telecom 2,097,152
121.128.0.0/11 AS18333 Korea Telecom 2,097,152
121.128.0.0/11 AS3786 Korea Telecom 2,097,152
121.128.0.0/11 AS38122 Korea Telecom 2,097,152
121.128.0.0/11 AS38126 Korea Telecom 2,097,152
121.128.0.0/11 AS38394 Korea Telecom 2,097,152
121.128.0.0/11 AS38395 Korea Telecom 2,097,152
121.128.0.0/11 AS38399 Korea Telecom 2,097,152
121.128.0.0/11 AS38412 Korea Telecom 2,097,152
121.128.0.0/11 AS38697 Korea Telecom 2,097,152
121.128.0.0/11 AS46002 Korea Telecom 2,097,152
121.128.0.0/11 AS4766 Korea Telecom 2,097,152
121.128.0.0/11 AS9526 Korea Telecom 2,097,152
121.128.0.0/11 AS9530 Korea Telecom 2,097,152
121.128.0.0/11 AS9638 Korea Telecom 2,097,152
121.128.0.0/11 AS9647 Korea Telecom 2,097,152
121.128.0.0/11 AS9696 Korea Telecom 2,097,152
121.128.0.0/11 AS9776 Korea Telecom 2,097,152
121.128.0.0/11 AS9856 Korea Telecom 2,097,152
121.128.0.0/11 AS9870 Korea Telecom 2,097,152

Nearby Ranges

BGP prefixes that overlap with 121.128.0.0/16

Range ASN Company Num of IPs
121.128.0.0/11 AS131792 Korea Telecom 2,097,152
121.128.0.0/11 AS152214 Korea Telecom 2,097,152
121.128.0.0/11 AS17588 Korea Telecom 2,097,152
121.128.0.0/11 AS18023 Korea Telecom 2,097,152
121.128.0.0/11 AS18333 Korea Telecom 2,097,152
121.128.0.0/11 AS3786 Korea Telecom 2,097,152
121.128.0.0/11 AS38122 Korea Telecom 2,097,152
121.128.0.0/11 AS38126 Korea Telecom 2,097,152
121.128.0.0/11 AS38394 Korea Telecom 2,097,152
121.128.0.0/11 AS38395 Korea Telecom 2,097,152
121.128.0.0/11 AS38399 Korea Telecom 2,097,152
121.128.0.0/11 AS38412 Korea Telecom 2,097,152
121.128.0.0/11 AS38697 Korea Telecom 2,097,152
121.128.0.0/11 AS46002 Korea Telecom 2,097,152
121.128.0.0/11 AS4766 Korea Telecom 2,097,152
121.128.0.0/11 AS9526 Korea Telecom 2,097,152
121.128.0.0/11 AS9530 Korea Telecom 2,097,152
121.128.0.0/11 AS9638 Korea Telecom 2,097,152
121.128.0.0/11 AS9647 Korea Telecom 2,097,152
121.128.0.0/11 AS9696 Korea Telecom 2,097,152
121.128.0.0/11 AS9776 Korea Telecom 2,097,152
121.128.0.0/11 AS9856 Korea Telecom 2,097,152
121.128.0.0/11 AS9870 Korea Telecom 2,097,152

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity
Read more

Pingable IPs

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

IP Address ASN Details
121.128.55.146 AS9647 Seoul Metropolitan Government 1.57ms 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
123.126.41.248 AS4808 China Unicom Beijing Province Network 3.49ms from Beijing, CN
52.36.5.40 AS16509 Amazon.com, Inc. 0.13ms from Boardman, US
83.141.24.200 AS29551 Aixit GmbH 0.56ms from Frankfurt am Main, DE
76.167.245.200 AS20001 Charter Communications Inc 6.17ms from Los Angeles, US
194.4.210.40 AS51870 La Francaise des Jeux 1.08ms from Marseille, FR
67.52.212.232 AS10796 Charter Communications Inc 0.74ms from Milwaukee, US
135.131.103.104 AS4181 TDS TELECOM 5.19ms from Minneapolis, US
60.145.0.168 AS17676 SoftBank Corp. 3.73ms from Osaka, JP
85.29.124.200 AS13170 Kaisanet Oy 0.85ms from Oulu, FI
3.210.6.104 AS14618 Amazon.com, Inc. 0.21ms from Reston, US
54.235.59.120 AS14618 Amazon.com, Inc. 0.31ms from Reston, US
210.96.230.152 AS3786 LG DACOM Corporation 1.96ms from Seoul, KR
59.10.96.168 AS4766 Korea Telecom 1.30ms from Seoul, KR
223.135.75.120 AS2527 Sony Network Communications Inc. 2.27ms from Tokyo, JP
52.10.176.200 AS16509 Amazon.com, Inc. 0.15ms from Boardman, US
94.124.160.120 AS395092 Shock Hosting LLC 0.13ms from Frankfurt am Main, DE
1.54.115.248 AS18403 FPT Telecom Company 0.60ms from Hanoi, VN
87.94.147.40 AS16086 DNA Oyj 0.87ms from Helsinki, FI
154.219.164.216 AS134548 DXTL Tseung Kwan O Service 0.74ms from Hong Kong, HK
73.155.82.8 AS7922 Comcast Cable Communications, LLC 5.19ms from Houston, US
20.33.112.168 AS8069 Microsoft Corporation 0.19ms from Lohogaon, IN
51.195.227.200 AS16276 OVH SAS 0.17ms from London, GB
195.99.41.168 AS6871 Plusnet 4.00ms from London, GB
75.237.49.72 AS6167 Verizon Business 14.85ms from Los Angeles, US
109.109.140.40 AS205072 Layershift Limited 0.58ms from Manchester, GB

Traceroute

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

$
traceroute -a -n -q1 -f4 -m16 121.128.55.182
traceroute to 121.128.55.182 (121.128.55.182): 16 hops max, 52 byte packets
4 [AS3356] 4.68.62.233 1.332 ms
5 *
6 [AS3356] 4.68.37.206 104.931 ms
7 [AS4766] 112.174.87.213 233.148 ms
8 [AS4766] 112.174.91.181 232.672 ms
9 *
10 *
11 *
12 [AS4766] 211.217.66.82 241.759 ms
13 [AS9647] 202.14.90.137 245.781 ms
14 *
15 *
16 *
Measurement taken from IPinfo ProbeNet in Quito, EC
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.

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