203.249.173.0/24

AS17593 · NDS Coporation

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Summary

Country	South Korea
Domain	kt.com
ASN	AS17593
Parent Range	203.249.160.0/19
Registry	KRNIC
ID	KORNET-KR

WHOIS Details

inetnum:        203.249.160.0 - 203.249.191.255
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:        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

Overlapping Ranges

BGP prefixes that contain 203.249.173.0/24

Range	ASN	Company	Num of IPs
203.249.160.0/19	AS17593	Korea Telecom	8,192
203.249.160.0/19	AS4766	Korea Telecom	8,192

Nearby Ranges

BGP prefixes that overlap with 203.249.0.0/16

Range	ASN	Company	Num of IPs
203.249.160.0/19	AS4766	Korea Telecom	8,192
203.249.160.0/19	AS17593	Korea Telecom	8,192
203.249.114.0/23	AS9523	Mokwon University	512
203.249.40.0/24	AS10073	KOREA NATIONAL OPEN UNIVERSITY	256
203.249.41.0/24	AS10073	KOREA NATIONAL OPEN UNIVERSITY	256
203.249.42.0/24	AS10073	KOREA NATIONAL OPEN UNIVERSITY	256
203.249.43.0/24	AS10073	KOREA NATIONAL OPEN UNIVERSITY	256
203.249.44.0/24	AS10073	KOREA NATIONAL OPEN UNIVERSITY	256
203.249.45.0/24	AS10073	KOREA NATIONAL OPEN UNIVERSITY	256
203.249.122.0/24	AS3786	SEOKYEONG UNIVERSITY	256
203.249.123.0/24	AS3786	SEOKYEONG UNIVERSITY	256
203.249.37.0/24	AS3786	CHONGSHIN UNIVERSITY	256
203.249.39.0/24	AS3786	Dongyang Technical College	256
203.249.11.0/24	AS4766	KYONGGI UNIVERSTY	256
203.249.12.0/24	AS4766	KYONGGI UNIVERSTY	256
203.249.13.0/24	AS4766	KYONGGI UNIVERSTY	256
203.249.14.0/24	AS4766	KYONGGI UNIVERSTY	256
203.249.15.0/24	AS4766	KYONGGI UNIVERSTY	256
203.249.16.0/24	AS4766	KYONGGI UNIVERSTY	256
203.249.32.0/24	AS4766	CHUNGBUK PROVINCIAL UNIVERSITY OF SCIENCE & TECHNOLOGY	256
203.249.38.0/24	AS55611	KYUNGMIN	256
203.249.126.0/24	AS9318	GACHON University	256
203.249.127.0/24	AS9318	GACHON University	256
203.249.33.0/24	AS9318	GACHON University	256
203.249.47.0/24	AS10071	Anyang University	256
203.249.35.0/24	AS9867	Jeonju Technical College	256
203.249.34.0/24	AS10073	KOREA NATIONAL OPEN UNIVERSITY	256
203.249.36.0/24	AS10073	KOREA NATIONAL OPEN UNIVERSITY	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

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

IP Address	ASN	Details
203.249.173.81	AS17593 NDS Coporation	`0.88ms` from Incheon, 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
97.180.121.216	AS6167 Verizon Business	`10.93ms` from Atlanta, US
110.164.62.88	AS37992 Thammasat University in thailand	`1.66ms` from Bangkok, TH
44.248.106.56	AS16509 Amazon.com, Inc.	`0.27ms` from Boardman, US
175.10.36.248	AS4134 CHINANET-BACKBONE	`1.30ms` from Changsha, CN
138.2.120.24	AS31898 Oracle Corporation	`0.15ms` from Chuncheon, KR
107.91.84.232	AS20057 AT&T Enterprises, LLC	`2.85ms` from Dallas, US
94.185.137.88	AS9009 M247 Europe SRL	`0.25ms` from Dublin, IE
117.16.96.200	AS9691 KYUNGSUNG UNIVERSITY	`6.99ms` from Incheon, KR
212.159.185.248	AS13285 TalkTalk Communications Limited	`3.41ms` from London, GB
176.112.107.184	AS198616 MediaKvant Ltd.	`7.23ms` from Moscow, RU
109.95.254.136	AS48320 KETIS Ltd.	`3.87ms` from Moscow, RU
176.196.166.56	AS39927 E-Light-Telecom Ltd.	`4.79ms` from Novosibirsk, RU
34.224.203.248	AS14618 Amazon.com, Inc.	`0.18ms` from Reston, US
165.155.151.248	AS21704 New York City Board of Education	`0.68ms` from Secaucus, US
59.15.190.200	AS4766 Korea Telecom	`1.18ms` from Seoul, KR
218.161.90.200	AS3462 Data Communication Business Group	`2.19ms` from Taipei, TW
58.244.71.136	AS4837 CHINA UNICOM China169 Backbone	`3.24ms` from Changchun, CN
18.189.83.184	AS16509 Amazon.com, Inc.	`0.18ms` from Columbus, US
20.9.91.184	AS8075 Microsoft Corporation	`0.16ms` from Des Moines, US
14.169.82.24	AS45899 VNPT Corp	`1.69ms` from Ho Chi Minh City, VN
81.141.205.72	AS2856 British Telecommunications PLC	`2.47ms` from London, GB
149.248.76.56	AS399629 BL Networks	`0.76ms` from London, GB
78.141.55.120	AS5413 Wavenet Limited	`3.04ms` from London, GB
5.138.29.152	AS12389 PJSC Rostelecom	`17.76ms` from Moscow, RU
88.102.148.56	AS5610 O2 Czech Republic, a.s.	`3.49ms` from Prague, CZ

Traceroute

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

traceroute -a -n -q1 203.249.173.66

traceroute to 203.249.173.66 (203.249.173.66): 64 hops max, 52 byte packets

1 [AS199524] 82.117.226.1 0.111 ms

2 *

3 *

4 *

5 [AS9457] 211.45.68.45 1.839 ms

6 [AS9318] 39.120.253.58 1.154 ms

7 [AS9318] 39.120.253.57 2.988 ms

8 *

9 *

10 *

11 [AS9318] 218.49.174.2 1.642 ms

12 *

13 [AS17593] 203.249.173.66 1.439 ms

Measurement taken from

IPinfo ProbeNet in Incheon, KR

On January 19th 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.

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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