203.242.64.0/21

AS10049 · SK Co.,

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Summary

Country	South Korea
Domain	sk.com
ASN	AS10049
Registry	APNIC
ID	SK-NET

WHOIS Details

inetnum:        203.242.64.0 - 203.242.64.255
netname:        SK-NET
descr:          SK Co.,
country:        KR
admin-c:        IM668-AP
tech-c:         IM668-AP
status:         ALLOCATED PORTABLE
mnt-by:         MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
last-modified:  2019-04-29T07:40:12Z
source:         APNIC

irt:            IRT-KRNIC-KR
address:        Jeollanam-do Naju-si Jinheung-gil
e-mail:         irt@nic.or.kr
abuse-mailbox:  irt@nic.or.kr
admin-c:        IM574-AP
tech-c:         IM574-AP
auth:           # Filtered
remarks:        irt@nic.or.kr was validated on 2020-04-09
mnt-by:         MNT-KRNIC-AP
last-modified:  2021-06-15T06:21:49Z
source:         APNIC

person:         IP Manager
address:        Gyeonggi-do Bundang-gu, Seongnam-si Seongnam-daero 343beon-gil 9
country:        KR
phone:          +82-2-6400-4592
e-mail:         sk-net@sk.com
nic-hdl:        IM668-AP
mnt-by:         MNT-KRNIC-AP
last-modified:  2021-10-12T08:58:02Z
source:         APNIC

inetnum:        203.242.64.0 - 203.242.64.255
netname:        SK-NET-KR
descr:          SK Co.,
country:        KR
admin-c:        IA126-KR
tech-c:         BS126-KR
status:         ALLOCATED PORTABLE
mnt-by:         MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
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.
changed:        hostmaster@nic.or.kr
source:         KRNIC

person:         IP Manager
address:        Gyeonggi-do Bundang-gu, Seongnam-si Seongnam-daero 343beon-gil 9
address:        SK U-Tower
country:        KR
phone:          +82-2-6400-4592
e-mail:         sk-net@sk.com
nic-hdl:        BS126-KR
mnt-by:         MNT-KRNIC-AP
changed:        hostmaster@nic.or.kr
source:         KRNIC

person:         IP Manager
address:        Gyeonggi-do Bundang-gu, Seongnam-si Seongnam-daero 343beon-gil 9
address:        SK U-Tower
country:        KR
phone:          +82-2-6400-4592
e-mail:         sk-net@sk.com
nic-hdl:        IA126-KR
mnt-by:         MNT-KRNIC-AP
changed:        hostmaster@nic.or.kr
source:         KRNIC

Nearby Ranges

BGP prefixes that overlap with 203.242.0.0/16

Range	ASN	Company	Num of IPs
203.242.0.0/19	AS4766	Korea Telecom	8,192
203.242.0.0/19	AS17841	Korea Telecom	8,192
203.242.0.0/19	AS45400	Korea Telecom	8,192
203.242.32.0/20	AS10189	Hyundai Movex	4,096
203.242.80.0/20	AS10049	SK Co.,	4,096
203.242.48.0/21	AS10189	Hyundai Movex	2,048
203.242.56.0/22	AS10189	Hyundai Movex	1,024
203.242.60.0/23	AS10189	Hyundai Movex	512
203.242.207.0/24	AS7557	KTNETDRDAEJEONBACKBONE	256
203.242.62.0/24	AS10189	Hyundai Movex	256
203.242.202.0/24	AS7557	KTNETDRSERVICENETWORK	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

No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

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
65.56.7.117	AS3356 Level 3 Parent, LLC	`1.04ms` from Cincinnati, US
18.166.242.149	AS16509 Amazon.com, Inc.	`0.12ms` from Hong Kong, HK
211.215.188.21	AS9318 SK Broadband Co Ltd	`2.26ms` from Incheon, KR
37.213.175.5	AS6697 Republican Unitary Telecommunication Enterprise Beltelecom	`5.83ms` from Minsk, BY
35.174.176.85	AS14618 Amazon.com, Inc.	`0.18ms` from Reston, US
74.244.102.85	AS14593 Space Exploration Technologies Corporation	`12.60ms` from Santiago de Queretaro, MX
187.211.247.245	AS8151 UNINET	`5.91ms` from Santiago de Queretaro, MX
14.89.106.101	AS4766 Korea Telecom	`1.66ms` from Seoul, KR
112.179.163.101	AS4766 Korea Telecom	`1.17ms` from Seoul, KR
86.32.247.5	AS205714 Telemach Hrvatska d.o.o.	`1.33ms` from Sisak, HR
174.91.45.85	AS577 Bell Canada	`1.30ms` from Toronto, CA
216.66.66.37	AS39979 Polygon.io, Inc	`0.25ms` from Atlanta, US
174.102.237.37	AS10796 Charter Communications Inc	`5.28ms` from Chicago, US
3.136.25.21	AS16509 Amazon.com, Inc.	`0.17ms` from Columbus, US
194.8.221.197	AS8422 NetCologne Gesellschaft fur Telekommunikation mbH	`1.75ms` from Duesseldorf, DE
27.159.101.53	AS133775 Xiamen	`5.22ms` from Fuzhou, CN
180.103.124.133	AS4134 CHINANET-BACKBONE	`6.37ms` from Huai'an, CN
51.107.80.117	AS8075 Microsoft Corporation	`0.20ms` from Kloten, CH
2.61.229.213	AS12389 PJSC Rostelecom	`8.70ms` from Krasnoyarsk, RU
81.79.113.197	AS5378 Vodafone Limited	`5.17ms` from London, GB
149.62.166.53	AS197969 Federal State Unitary Enterprise "Morsviazsputnik"	`0.64ms` from Moscow, RU
193.47.70.165	AS29608 OVEA SAS	`0.34ms` from Paris, FR
203.188.138.21	AS4826 Vocus Connect International Backbone	`0.73ms` from Perth, AU
98.86.30.21	AS14618 Amazon.com, Inc.	`0.22ms` from Reston, US
189.80.211.245	AS7738 V tal	`1.24ms` from Rio de Janeiro, BR

Traceroute

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

traceroute -a -n -q1 -f2 -m13 203.242.64.192

traceroute to 203.242.64.192 (203.242.64.192): 13 hops max, 52 byte packets

2 [] 80.81.196.114 11.024 ms

3 *

4 *

5 *

6 *

7 [AS9848] 211.239.201.158 248.777 ms

8 [AS9848] 203.231.99.78 226.176 ms

9 *

10 [AS10049] 49.50.35.66 227.751 ms

11 *

12 *

13 *

Measurement taken from

IPinfo ProbeNet in Wrocław, PL

On January 18th 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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