211.253.124.0/24

AS17841 · NATIONAL INFORMATION RESOURCES SERVICE

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Summary

Country	South Korea
Domain	kt.com
ASN	AS17841
Registry	KRNIC
ID	KORNET-KR

WHOIS Details

inetnum:        211.253.120.0 - 211.253.127.255
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

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

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

IP Address	ASN	Details
211.253.124.10	AS17841 NATIONAL INFORMATION RESOURCES SERVICE	`8.24ms` 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
3.149.72.8	AS16509 Amazon.com, Inc.	`0.20ms` from Columbus, US
52.56.194.40	AS16509 Amazon.com, Inc.	`0.11ms` from London, GB
90.201.245.56	AS5607 Sky UK Limited	`6.56ms` from London, GB
189.223.64.216	AS8151 UNINET	`3.86ms` from Los Angeles, US
193.205.185.24	AS137 Consortium GARR	`14.18ms` from Milan, IT
172.98.161.56	AS5511 Orange S.A.	`0.18ms` from Paris, FR
34.201.183.24	AS14618 Amazon.com, Inc.	`0.22ms` from Reston, US
38.14.168.232	AS54600 PEG TECH INC	`0.18ms` from San Jose, US
124.51.186.216	AS17858 LG POWERCOMM	`7.98ms` from Seoul, KR
14.103.248.232	AS4811 China Telecom (Group)	`2.85ms` from Shanghai, CN
116.86.163.72	AS55430 Starhub Ltd	`1.17ms` from Singapore, SG
54.250.83.40	AS16509 Amazon.com, Inc.	`0.23ms` from Tokyo, JP
99.248.29.216	AS812 Rogers Communications Canada Inc.	`4.47ms` from Toronto, CA
75.191.181.40	AS11426 Charter Communications Inc	`11.11ms` from Atlanta, US
120.153.7.232	AS1221 Telstra Limited	`4.95ms` from Brisbane, AU
85.122.102.88	AS34304 Teen Telecom SRL	`2.73ms` from Bucharest, RO
73.71.20.8	AS7922 Comcast Cable Communications, LLC	`2.06ms` from Fremont, US
81.151.173.232	AS2856 British Telecommunications PLC	`2.74ms` from London, GB
104.174.161.8	AS20001 Charter Communications Inc	`5.11ms` from Los Angeles, US
85.39.61.72	AS3269 Telecom Italia S.p.A.	`11.34ms` from Milan, IT
95.235.150.72	AS3269 Telecom Italia S.p.A.	`16.31ms` from Milan, IT
211.3.139.184	AS4725 SoftBank Corp.	`15.10ms` from Osaka, JP
177.83.188.104	AS28573 Claro NXT Telecomunicacoes Ltda	`3.65ms` from Osasco, BR
77.140.55.200	AS15557 Societe Francaise Du Radiotelephone - SFR SA	`8.08ms` from Paris, FR
78.81.131.152	AS12389 PJSC Rostelecom	`5.83ms` from Saint Petersburg, RU

Traceroute

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

traceroute -a -n -q1 -f2 211.253.124.17

traceroute to 211.253.124.17 (211.253.124.17): 64 hops max, 52 byte packets

2 [AS23265] 206.126.16.197 1.115 ms

3 *

4 [] 206.81.81.40 8.543 ms

5 *

6 *

7 *

8 *

9 [AS9318] 39.120.253.82 124.546 ms

10 *

11 *

12 *

13 [AS17841] 211.253.124.17 133.231 ms

Measurement taken from

IPinfo ProbeNet in Walla Walla, US

On August 22nd 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.

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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