210.121.209.0/24

AS152290 · Jejuair

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Summary

Country	South Korea
Domain	kt.com
ASN	AS152290
Parent Range	210.121.128.0/17
Registry	KRNIC
ID	KORNET-KR

WHOIS Details

inetnum:        210.121.128.0 - 210.121.255.255
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 210.121.209.0/24

Range	ASN	Company	Num of IPs
210.121.128.0/17	AS18176	Korea Telecom	32,768
210.121.128.0/17	AS10058	Korea Telecom	32,768
210.121.128.0/17	AS152290	Korea Telecom	32,768
210.121.128.0/17	AS55627	Korea Telecom	32,768
210.121.128.0/17	AS38676	Korea Telecom	32,768
210.121.128.0/17	AS4766	Korea Telecom	32,768

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

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

IP Address	ASN	Details
210.121.209.52	AS152290 Jejuair	`0.83ms` 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
92.151.191.40	AS3215 Orange S.A.	`13.52ms` from Aubervilliers, FR
34.58.48.24	AS396982 Google LLC	`0.12ms` from Council Bluffs, US
213.50.175.136	AS1257 Tele2 Sverige AB	`0.62ms` from Goeteborg, SE
189.129.237.104	AS8151 UNINET	`4.27ms` from Guadalajara, MX
2.22.127.8	AS20940 Akamai International B.V.	`0.40ms` from London, GB
82.42.17.168	AS5089 Virgin Media Limited	`11.72ms` from London, GB
90.5.201.168	AS3215 Orange S.A.	`2.24ms` from Lyon, FR
218.115.35.56	AS17676 SoftBank Corp.	`4.30ms` from Osaka, JP
219.126.198.216	AS2497 Internet Initiative Japan Inc.	`8.78ms` from Osaka, JP
155.37.255.152	AS394655 University of Connecticut Health Center	`6.56ms` from Providence, US
40.79.167.8	AS8075 Microsoft Corporation	`1.19ms` from Sydney, AU
87.195.200.232	AS12414 Solcon Internetdiensten B.V.	`7.51ms` from The Hague, NL
105.105.38.56	AS36947 Telecom Algeria	`11.83ms` from Tunis, TN
77.4.3.200	AS6805 Telefonica Germany GmbH & Co.OHG	`16.86ms` from Zuerich, CH
85.255.209.200	AS31673 Uniserver Internet B.V.	`0.68ms` from Amsterdam, NL
74.179.171.40	AS8075 Microsoft Corporation	`0.45ms` from Ashburn, US
147.102.247.88	AS3323 National Technical University of Athens	`1.74ms` from Athens, GR
71.90.227.56	AS20115 Charter Communications LLC	`12.47ms` from Atlanta, US
89.80.209.136	AS5410 Bouygues Telecom SA	`3.87ms` from Aubervilliers, FR
154.177.225.8	AS8452 TE-AS	`2.69ms` from Cairo, EG
27.57.71.184	AS24560 Bharti Airtel Ltd., Telemedia Services	`9.81ms` from Delhi, IN
87.160.215.152	AS3320 Deutsche Telekom AG	`6.12ms` from Frankfurt am Main, DE
94.7.84.184	AS5607 Sky UK Limited	`5.82ms` from London, GB
79.159.33.8	AS3352 TELEFONICA DE ESPANA S.A.U.	`10.53ms` from Madrid, ES
207.81.221.40	AS852 TELUS Communications Inc.	`3.39ms` 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 -f3 -m18 210.121.209.154

traceroute to 210.121.209.154 (210.121.209.154): 18 hops max, 52 byte packets

3 [AS3257] 154.14.160.57 0.606 ms

4 [AS3257] 89.149.130.54 157.295 ms

5 [AS4766] 121.189.2.25 140.266 ms

6 [AS4766] 112.174.87.249 269.879 ms

7 [AS4766] 112.174.86.237 250.72 ms

8 [AS4766] 112.174.49.70 258.224 ms

9 *

10 [AS4766] 14.36.200.102 250.96 ms

11 [AS152290] 220.76.194.250 250.855 ms

12 *

13 *

14 *

15 [AS152290] 220.76.194.250 250.917 ms

16 *

17 *

18 *

Measurement taken from

IPinfo ProbeNet in Amsterdam, NL

On September 4th 2025

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