211.253.154.0/24

AS9955 · Baekseok University

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Summary

Country	South Korea
Domain	kt.com
ASN	AS9955
Registry	APNIC
ID	KORNET

WHOIS Details

inetnum:        211.253.152.0 - 211.253.155.255
netname:        KORNET
descr:          Korea Telecom
country:        KR
admin-c:        IM667-AP
tech-c:         IM667-AP
status:         ALLOCATED PORTABLE
mnt-by:         MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
last-modified:  2025-11-03T08:15:06Z
source:         APNIC

irt:            IRT-KRNIC-KR
address:        9, Jinheung-gil, Naju-si, Jeollanam-do
e-mail:         irt@nic.or.kr
abuse-mailbox:  irt@nic.or.kr
admin-c:        IM574-AP
tech-c:         IM574-AP
auth:           # Filtered
remarks:        irt@nic.or.kr was validated on 2020-04-09
mnt-by:         MNT-KRNIC-AP
last-modified:  2025-09-04T01:00:01Z
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
last-modified:  2017-03-28T06:37:04Z
source:         APNIC

inetnum:        211.253.152.0 - 211.253.155.255
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.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

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

Nearby Ranges

BGP prefixes that overlap with 211.253.0.0/16

Range	ASN	Company	Num of IPs
211.253.176.0/20	AS10176	Korea Telecom	4,096
211.253.72.0/21	AS9531	Korea Telecom	2,048
211.253.68.0/22	AS9531	Gwangjugwangyeoksigyoyukcheong	1,024
211.253.61.0/24	AS17574	KT	256
211.253.61.0/24	AS17574	KT	256
211.253.60.0/24	AS17841	KT	256
211.253.60.0/24	AS17841	KT	256
211.253.61.0/24	AS17841	KT	256
211.253.61.0/24	AS17841	KT	256
211.253.62.0/24	AS17841	Korea Telecom	256
211.253.65.0/24	AS45400	Korea Telecom	256
211.253.67.0/24	AS45400	Korea Telecom	256
211.253.56.0/24	AS4766	Korea Telecom	256
211.253.59.0/24	AS4766	Baekseokyesuldaehakgyo	256
211.253.60.0/24	AS17574	KT	256
211.253.60.0/24	AS17574	KT	256

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

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

IP Address	ASN	Details
211.253.154.129	AS9955 Baekseok University	`3.50ms` 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
20.82.56.24	AS8075 Microsoft Corporation	`0.23ms` from Amsterdam, NL
24.66.94.8	AS6327 Shaw Communications	`13.84ms` from Calgary, CA
73.168.139.232	AS7922 Comcast Cable Communications, LLC	`7.60ms` from Chicago, US
68.38.6.40	AS7922 Comcast Cable Communications, LLC	`12.65ms` from Chicago, US
14.67.198.8	AS4766 Korea Telecom	`1.75ms` from Incheon, KR
217.232.204.184	AS3320 Deutsche Telekom AG	`6.35ms` from Nuernberg, DE
195.154.89.184	AS12876 SCALEWAY S.A.S.	`0.54ms` from Paris, FR
112.247.105.168	AS4837 CHINA UNICOM China169 Backbone	`9.24ms` from Qingdao, CN
52.87.100.168	AS14618 Amazon.com, Inc.	`0.20ms` from Reston, US
219.104.142.232	AS2527 Sony Network Communications Inc.	`1.73ms` from Tokyo, JP
220.220.145.72	AS4713 NTT DOCOMO BUSINESS,Inc.	`10.93ms` from Tokyo, JP
3.248.148.168	AS16509 Amazon.com, Inc.	`0.13ms` from Dublin, IE
80.93.41.8	AS28919 Stadtwerke Kufstein GmbH	`11.39ms` from Frankfurt am Main, DE
194.230.36.232	AS6730 Sunrise GmbH	`0.22ms` from Geneve, CH
82.181.151.248	AS16086 DNA Oyj	`4.19ms` from Helsinki, FI
86.137.209.120	AS2856 British Telecommunications PLC	`7.63ms` from London, GB
206.78.134.24	AS21915 Merced County Office of Education	`11.92ms` from Los Angeles, US
122.232.226.72	AS4134 CHINANET-BACKBONE	`7.64ms` from Ningbo, CN
18.234.106.184	AS14618 Amazon.com, Inc.	`0.23ms` from Reston, US
210.66.124.152	AS4780 Digital United Inc.	`4.41ms` from Taipei, TW
180.94.91.72	AS55330 AFGHANTELECOM GOVERNMENT COMMUNICATION NETWORK	`16.10ms` from Tashkent, UZ
205.207.107.8	AS40444 Constant Contact, Inc	`0.96ms` from Boston, US
177.229.225.56	AS13999 Mega Cable, S.A. de C.V.	`1.40ms` from Guadalajara, MX
159.75.195.168	AS45090 Shenzhen Tencent Computer Systems Company Limited	`3.73ms` from Guangzhou, CN
179.167.25.56	AS26599 TELEFÔNICA BRASIL S.A	`2.30ms` from Osasco, BR

Traceroute

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

traceroute -a -n -q1 211.253.154.254

traceroute to 211.253.154.254 (211.253.154.254): 64 hops max, 52 byte packets

1 [AS15169] 172.253.64.143 1.1 ms

2 [AS3786] 182.162.216.1 0.337 ms

3 *

4 *

5 [AS3786] 182.162.36.6 1.401 ms

6 *

7 [AS3786] 182.162.36.21 1.025 ms

8 [AS3786] 1.213.105.133 1.472 ms

9 *

10 *

11 *

12 *

13 [AS9955] 211.253.154.254 3.452 ms

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On January 9th 2026

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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