210.104.48.0/20

AS4766 · Korea Telecom

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Summary

Country	South Korea
Domain	kt.com
ASN	AS4766
Registry	KRNIC
ID	KORNET-KR

WHOIS Details

inetnum:        210.104.48.0 - 210.104.51.255
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

Nearby Ranges

BGP prefixes that overlap with 210.104.0.0/16

Range	ASN	Company	Num of IPs
210.104.10.0/24	AS45400	Korea Telecom	256
210.104.11.0/24	AS45400	Korea Telecom	256
210.104.12.0/24	AS45400	Korea Telecom	256
210.104.123.0/24	AS45400	Korea Telecom	256
210.104.13.0/24	AS45400	Korea Telecom	256
210.104.138.0/24	AS45400	Korea Telecom	256
210.104.14.0/24	AS45400	Korea Telecom	256
210.104.15.0/24	AS45400	Korea Telecom	256
210.104.20.0/24	AS45400	Korea Telecom	256
210.104.22.0/24	AS45400	Korea Telecom	256
210.104.26.0/24	AS45400	Korea Telecom	256
210.104.27.0/24	AS45400	Korea Telecom	256
210.104.28.0/24	AS45400	Korea Telecom	256
210.104.44.0/24	AS45400	Korea Telecom	256
210.104.8.0/24	AS45400	Korea Telecom	256
210.104.9.0/24	AS45400	Korea Telecom	256
210.104.32.0/24	AS4766	ETRIbuseolgukgaboangisulyeonguso	256
210.104.33.0/24	AS4766	ETRIbuseolgukgaboangisulyeonguso	256
210.104.34.0/24	AS4766	KT	256
210.104.39.0/24	AS4766	Samhwajeongi(ju)	256
210.104.21.0/24	AS9683	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

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

IP Address	ASN	Details
210.104.57.61	AS4766 Korea Telecom	`1.74ms` from Seoul, KR
210.104.62.24	AS4766 Korea Telecom	`0.97ms` from Seoul, KR
210.104.60.170	AS4766 Korea Telecom	`0.99ms` from Seoul, KR
210.104.58.218	AS4766 Korea Telecom	`3.73ms` from Incheon, KR
210.104.63.89	AS4766 Korea Telecom	`1.03ms` from Seoul, KR
210.104.59.10	AS4766 Korea Telecom	`4.63ms` from Seoul, KR
210.104.61.132	AS4766 Korea Telecom	`1.06ms` 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
114.244.117.52	AS4808 China Unicom Beijing Province Network	`4.43ms` from Beijing, CN
57.150.84.196	AS8075 Microsoft Corporation	`0.42ms` from Boydton, US
37.151.236.68	AS9198 JSC Kazakhtelecom	`4.77ms` from Karagandy, KZ
82.102.27.116	AS9009 M247 Europe SRL	`0.08ms` from Oslo, NO
79.174.234.180	AS15557 Societe Francaise Du Radiotelephone - SFR SA	`1.11ms` from Paris, FR
217.169.242.4	AS33835 WEACCESS GROUP S.A.	`2.29ms` from Paris, FR
93.63.92.4	AS12874 Fastweb SpA	`3.48ms` from Rome, IT
142.214.211.20	AS7393 CYBERCON, INC.	`0.51ms` from St. Louis, US
210.70.197.100	AS1659 Taiwan Academic Network (TANet) Information Center	`3.28ms` from Taipei, TW
61.189.105.52	AS4837 CHINA UNICOM China169 Backbone	`10.31ms` from Tieling, CN
112.138.122.20	AS10010 TOKAI Communications Corporation	`2.69ms` from Tokyo, JP
149.156.18.4	AS8267 Academic Computer Centre CYFRONET AGH	`9.22ms` from Warsaw, PL
92.119.81.20	AS136787 PacketHub S.A.	`0.14ms` from Dallas, US
46.98.152.36	AS15377 TRADITIONAL LLC	`7.22ms` from Kyiv, UA
62.175.106.84	AS6739 VODAFONE ONO, S.A.	`12.29ms` from Madrid, ES
90.156.157.164	AS50340 JSC Selectel	`0.61ms` from Moscow, RU
88.59.202.68	AS3269 Telecom Italia S.p.A.	`4.03ms` from Naples, IT
219.50.180.228	AS17676 SoftBank Corp.	`4.16ms` from Osaka, JP
71.123.39.164	AS701 Verizon Business	`1.90ms` from Philadelphia, US
39.76.43.244	AS4837 CHINA UNICOM China169 Backbone	`6.69ms` from Qingdao, CN
37.207.158.20	AS3269 Telecom Italia S.p.A.	`1.57ms` from Rome, IT
121.135.11.100	AS4766 Korea Telecom	`1.70ms` from Seoul, KR
126.11.247.68	AS17676 SoftBank Corp.	`3.14ms` from Tokyo, JP
161.202.247.132	AS36351 IBM Cloud	`0.54ms` from Tokyo, JP
63.120.17.132	AS701 Verizon Business	`2.66ms` from Ashburn, US

Traceroute

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

traceroute -a -n -q1 -m6 210.104.56.21

traceroute to 210.104.56.21 (210.104.56.21): 6 hops max, 52 byte packets

1 [AS15169] 74.125.37.114 309.954 ms

2 *

3 [AS4766] 112.174.84.77 340.639 ms

4 *

5 *

6 *

Measurement taken from

IPinfo ProbeNet in Johannesburg, ZA

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.

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