211.57.43.0/24

AS45400 · Korea Telecom

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Summary

Country	South Korea
Domain	kt.com
ASN	AS45400
Registry	KRNIC
ID	KORNET-KR

WHOIS Details

inetnum:        211.57.40.0 - 211.57.63.255
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

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
211.57.43.193	AS45400 Korea Telecom	`7.91ms` 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
114.115.155.216	AS23724 IDC, China Telecommunications Corporation	`3.58ms` from Beijing, CN
178.223.156.248	AS8400 TELEKOM SRBIJA a.d.	`18.79ms` from Belgrade, RS
62.248.34.136	AS9121 Turk Telekomunikasyon Anonim Sirketi	`17.67ms` from Bursa, TR
73.8.31.168	AS7922 Comcast Cable Communications, LLC	`5.51ms` from Chicago, US
165.197.109.24	AS22460 PepsiCo, Inc.	`2.71ms` from Dallas, US
86.184.234.56	AS2856 British Telecommunications PLC	`7.60ms` from London, GB
79.7.1.88	AS3269 Telecom Italia S.p.A.	`4.68ms` from Milan, IT
212.251.233.184	AS2119 Telenor Norge AS	`5.79ms` from Oslo, NO
221.164.220.200	AS4766 Korea Telecom	`7.29ms` from Seoul, KR
221.143.128.8	AS9318 SK Broadband Co Ltd	`1.58ms` from Seoul, KR
110.40.132.168	AS45090 Shenzhen Tencent Computer Systems Company Limited	`0.72ms` from Shanghai, CN
181.215.50.24	AS212238 Datacamp Limited	`0.32ms` from Singapore, SG
188.125.41.56	AS8374 Polkomtel Sp. z o.o.	`16.04ms` from Warsaw, PL
13.90.144.248	AS8075 Microsoft Corporation	`0.32ms` from Ashburn, US
82.82.248.8	AS3209 Vodafone GmbH	`4.78ms` from Frankfurt am Main, DE
92.32.70.216	AS2119 Telenor Norge AS	`1.00ms` from Goeteborg, SE
103.130.219.168	AS135951 Webico Company Limited	`1.02ms` from Ho Chi Minh City, VN
95.95.108.72	AS2860 NOS COMUNICACOES, S.A.	`1.75ms` from Lisbon, PT
81.170.13.216	AS9105 TalkTalk Communications Limited	`3.43ms` from London, GB
76.167.141.136	AS20001 Charter Communications Inc	`6.36ms` from Los Angeles, US
80.28.104.248	AS3352 TELEFONICA DE ESPANA S.A.U.	`1.34ms` from Madrid, ES
95.246.202.72	AS3269 Telecom Italia S.p.A.	`6.11ms` from Milan, IT
52.207.187.104	AS14618 Amazon.com, Inc.	`0.23ms` from Reston, US
189.44.241.56	AS10429 TELEFÔNICA BRASIL S.A	`0.44ms` from Sao Paulo, BR
174.27.211.88	AS209 CenturyLink Communications, LLC	`10.77ms` from Seattle, US

Traceroute

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

traceroute -a -n -q1 211.57.43.253

traceroute to 211.57.43.253 (211.57.43.253): 64 hops max, 52 byte packets

1 [AS31898] 140.91.214.26 0.065 ms

2 [AS3786] 211.118.152.142 0.76 ms

3 *

4 *

5 *

6 *

7 [AS3786] 1.208.144.33 2.341 ms

8 [AS3786] 1.208.179.130 2.011 ms

9 [AS3786] 210.107.53.202 4.564 ms

10 *

11 *

12 *

13 [] 211.255.110.70 5.095 ms

14 [] 211.255.110.86 4.358 ms

15 [] 211.255.120.198 6.327 ms

16 *

17 [AS45400] 211.57.43.253 7.468 ms

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On September 11th 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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