210.121.134.0/24

AS55627 · Dongduk Womens University

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Summary

Country	South Korea
Domain	kt.com
ASN	AS55627
Parent Range	210.121.128.0/17
Registry	KRNIC
ID	KORNET-KR

WHOIS Details

inetnum:        210.121.128.0 - 210.121.255.255
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
changed:        hostmaster@nic.or.kr 20240912
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.kisa.or.kr.
source:         KRNIC


person:         IP Manager
address:        Gyeonggi-do Bundang-gu, Seongnam-si Buljeong-ro 90
address:        KT Head Office
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 20240912
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.kisa.or.kr.
source:         KRNIC

person:         IP Manager
address:        Gyeonggi-do Bundang-gu, Seongnam-si Buljeong-ro 90
address:        KT Head Office
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 20240912
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.kisa.or.kr.
source:         KRNIC

Overlapping Ranges

BGP prefixes that contain 210.121.134.0/24

Range	ASN	Company	Num of IPs
210.121.128.0/17	AS38676	Korea Telecom	32,768
210.121.128.0/17	AS152290	Korea Telecom	32,768
210.121.128.0/17	AS18176	Korea Telecom	32,768
210.121.128.0/17	AS10058	Korea Telecom	32,768
210.121.128.0/17	AS55627	Korea Telecom	32,768
210.121.128.0/17	AS4766	Korea Telecom	32,768

Nearby Ranges

BGP prefixes that overlap with 210.121.0.0/16

Range	ASN	Company	Num of IPs
210.121.128.0/17	AS10058	Korea Telecom	32,768
210.121.128.0/17	AS152290	Korea Telecom	32,768
210.121.128.0/17	AS18176	Korea Telecom	32,768
210.121.128.0/17	AS38676	Korea Telecom	32,768
210.121.0.0/17	AS45374	SEJONG NETWORKS	32,768
210.121.128.0/17	AS4766	Korea Telecom	32,768
210.121.128.0/17	AS55627	Korea Telecom	32,768
210.121.0.0/17	AS9848	SEJONG NETWORKS	32,768

Hosted domains

There are no domains currently hosted on this ASN.

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

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

IP Address	ASN	Details
210.121.134.240	AS55627 Dongduk Womens University	`2.00ms` 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
217.171.144.152	AS48503 Tele2 Kazakhstan	`19.65ms` from Aktau, KZ
72.77.53.152	AS701 Verizon Business	`6.61ms` from Ashburn, US
125.165.172.72	AS7713 PT Telekomunikasi Indonesia	`13.22ms` from Batam, ID
75.86.243.40	AS10796 Charter Communications Inc	`8.19ms` from Chicago, US
170.82.73.184	AS262773 PROXXIMA TELECOMUNICACOES SA	`8.79ms` from Fortaleza, BR
136.48.9.136	AS16591 Google Fiber Inc.	`4.59ms` from Kansas City, US
34.89.5.216	AS396982 Google LLC	`0.11ms` from London, GB
73.116.158.152	AS7922 Comcast Cable Communications, LLC	`8.70ms` from Los Angeles, US
77.72.137.248	AS42358 Insys LLC	`15.58ms` from Moscow, RU
108.35.142.104	AS701 Verizon Business	`1.65ms` from New York City, US
176.132.229.152	AS5410 Bouygues Telecom SA	`2.17ms` from Paris, FR
112.241.145.56	AS4837 CHINA UNICOM China169 Backbone	`9.03ms` from Qingdao, CN
52.244.130.248	AS8075 Microsoft Corporation	`19.18ms` from San Antonio, US
13.72.145.24	AS8075 Microsoft Corporation	`1.96ms` from San Antonio, US
191.114.235.24	AS7418 TELEFÓNICA CHILE S.A.	`9.15ms` from Santiago, CL
218.81.70.120	AS4812 China Telecom (Group)	`2.80ms` from Shanghai, CN
154.83.190.152	AS54801 Zillion Network Inc.	`0.89ms` from Ashburn, US
193.74.67.40	AS5432 Proximus NV	`2.42ms` from Brussels, BE
206.85.165.248	AS272809 THUNDERNET, C.A.	`8.45ms` from Caracas, VE
3.10.166.40	AS16509 Amazon.com, Inc.	`0.16ms` from London, GB
195.180.23.56	AS56329 Gigaclear Limited	`2.01ms` from London, GB
51.48.61.184	AS16509 Amazon.com, Inc.	`5.55ms` from Madrid, ES
85.69.16.104	AS15557 Societe Francaise Du Radiotelephone - SFR SA	`13.58ms` from Paris, FR
124.11.132.72	AS9924 Taiwan Fixed Network, Telco and Network Service Provider.	`1.85ms` from Taipei, TW
64.180.43.232	AS852 TELUS Communications Inc.	`3.96ms` from Vancouver, CA

Traceroute

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

traceroute -a -n -q1 -f6 210.121.134.250

traceroute to 210.121.134.250 (210.121.134.250): 64 hops max, 52 byte packets

6 [AS3786] 211.42.224.137 12.1 ms

7 *

8 *

9 *

10 *

11 [AS3786] 1.208.107.190 3.041 ms

12 [AS3786] 1.213.141.10 3.915 ms

13 [AS3786] 118.128.27.234 2.305 ms

14 [AS55627] 210.121.137.5 3.069 ms

15 [AS55627] 210.121.137.4 1.855 ms

16 *

17 *

18 [AS55627] 210.121.134.250 2.493 ms

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On December 28th 2025

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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