211.52.21.0/24

AS4766 · Korea Telecom

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Summary

Country	South Korea
Domain	kt.com
ASN	AS4766
Parent Range	211.52.0.0/18
Registry	KRNIC
ID	KORNET-KR

WHOIS Details

inetnum:        211.52.0.0 - 211.52.63.255
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

Overlapping Ranges

BGP prefixes that contain 211.52.21.0/24

Range	ASN	Company	Num of IPs
211.52.0.0/18	AS4766	Korea Telecom	16,384

Nearby Ranges

BGP prefixes that overlap with 211.52.0.0/16

Range	ASN	Company	Num of IPs
211.52.64.0/18	AS4663	ELIMNET, INC.	16,384
211.52.0.0/18	AS4766	Korea Telecom	16,384
211.52.160.0/19	AS9318	SK Broadband Co Ltd	8,192
211.52.128.0/20	AS9318	SK Broadband Co Ltd	4,096
211.52.144.0/20	AS9318	SK Broadband Co Ltd	4,096
211.52.243.0/24	AS38695	Bucheon 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

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

IP Address	ASN	Details
211.52.21.100	AS4766 Korea Telecom	`1.43ms` 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
78.171.63.216	AS9121 Turk Telekomunikasyon Anonim Sirketi	`4.00ms` from Bursa, TR
3.17.195.168	AS16509 Amazon.com, Inc.	`0.13ms` from Columbus, US
116.71.100.136	AS17557 Pakistan Telecommunication Company Limited	`2.16ms` from Karachi, PK
47.157.29.120	AS5650 Frontier Communications of America, Inc.	`1.95ms` from Los Angeles, US
177.74.74.8	AS262316 Ateky Internet Eireli Me	`8.08ms` from Novo Hamburgo, BR
52.220.244.232	AS16509 Amazon.com, Inc.	`0.11ms` from Singapore, SG
8.209.199.152	AS45102 Alibaba (US) Technology Co., Ltd.	`1.33ms` from Tokyo, JP
205.220.190.8	AS26211 Proofpoint, Inc.	`0.63ms` from Toronto, CA
54.38.61.200	AS16276 OVH SAS	`0.14ms` from Warsaw, PL
91.220.44.8	AS197368 FoodCare Sp. z o.o.	`5.55ms` from Warsaw, PL
85.5.175.8	AS3303 Swisscom (Switzerland) Ltd	`0.65ms` from Zuerich, CH
86.89.10.8	AS1136 KPN B.V.	`2.67ms` from Amsterdam, NL
73.200.241.184	AS7922 Comcast Cable Communications, LLC	`8.59ms` from Ashburn, US
103.163.157.40	AS141489 Allstate Solutions Private Limited	`2.56ms` from Bengaluru, IN
75.247.223.168	AS6167 Verizon Business	`16.75ms` from Chicago, US
3.139.252.184	AS16509 Amazon.com, Inc.	`0.17ms` from Columbus, US
81.140.219.248	AS2856 British Telecommunications PLC	`2.82ms` from Erith, GB
27.158.220.8	AS4134 CHINANET-BACKBONE	`7.72ms` from Fuzhou, CN
83.2.100.248	AS5617 Orange Polska Spolka Akcyjna	`2.24ms` from Gdansk, PL
82.11.247.8	AS5089 Virgin Media Limited	`8.67ms` from London, GB
201.130.217.200	AS16960 Television Internacional, S.A. de C.V.	`12.72ms` from Monterrey, MX
188.120.253.152	AS29182 JSC IOT	`0.36ms` from Moscow, RU
119.241.11.152	AS2518 BIGLOBE Inc.	`5.63ms` from Osaka, JP
78.199.83.88	AS12322 Free SAS	`1.33ms` from Paris, FR
78.154.158.8	AS5518 SIA Tet	`0.86ms` from Riga, LV

Traceroute

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

traceroute -a -n -q1 211.52.21.35

traceroute to 211.52.21.35 (211.52.21.35): 64 hops max, 52 byte packets

1 [AS31898] 140.91.214.46 0.082 ms

2 *

3 *

4 *

5 [AS4766] 112.174.116.210 2.186 ms

6 *

7 *

8 *

9 *

10 [AS4766] 211.52.21.35 2.107 ms

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On March 21st 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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