121.254.3.0/24

AS23563 · SK Broadband Co Ltd

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Summary

Country	South Korea
Domain	skbroadband.com
ASN	AS23563
Registry	APNIC
ID	TBROAD

WHOIS Details

inetnum:        121.254.0.0 - 121.254.63.255
netname:        broadNnet
descr:          SK Broadband Co Ltd
country:        KR
admin-c:        IM670-AP
tech-c:         IM670-AP
status:         ALLOCATED PORTABLE
mnt-by:         MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
last-modified:  2020-12-29T05:46:12Z
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:        Seoul Jung-gu Toegye-ro 24
country:        KR
phone:          +82-80-828-2106
e-mail:         ip-adm@skbroadband.com
nic-hdl:        IM670-AP
mnt-by:         MNT-KRNIC-AP
last-modified:  2021-10-05T05:20:03Z
source:         APNIC

inetnum:        121.254.0.0 - 121.254.63.255
netname:        broadNnet-KR
descr:          SK Broadband Co Ltd
country:        KR
admin-c:        IM12-KR
tech-c:         IM12-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:        Seoul Jung-gu Toegye-ro 24
address:        SK Namsan Green Bldg.
country:        KR
phone:          +82-80-828-2106
e-mail:         ip-adm@skbroadband.com
nic-hdl:        IM12-KR
mnt-by:         MNT-KRNIC-AP
changed:        hostmaster@nic.or.kr
source:         KRNIC

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

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

IP Address	ASN	Details
121.254.3.129	AS23563 SK Broadband Co Ltd	`1.94ms` 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
101.5.170.56	AS4538 China Education and Research Network Center	`3.98ms` from Beijing, CN
121.205.8.8	AS4134 CHINANET-BACKBONE	`4.80ms` from Fuzhou, CN
203.49.171.184	AS1221 Telstra Limited	`1.23ms` from Melbourne, AU
73.112.247.40	AS7922 Comcast Cable Communications, LLC	`8.62ms` from New York City, US
125.4.218.120	AS9617 JCOM Co., Ltd.	`8.70ms` from Osaka, JP
51.13.117.136	AS8075 Microsoft Corporation	`1.85ms` from Oslo, NO
193.251.30.168	AS3215 Orange S.A.	`2.87ms` from Paris, FR
70.69.89.184	AS6327 Shaw Communications Inc.	`8.99ms` from Seattle, US
175.206.26.200	AS4766 Korea Telecom	`2.67ms` from Seoul, KR
88.117.106.216	AS8447 A1 Telekom Austria AG	`5.01ms` from Vienna, AT
94.65.85.168	AS6799 Ote SA (Hellenic Telecommunications Organisation)	`1.78ms` from Athens, GR
80.133.181.168	AS3320 Deutsche Telekom AG	`2.65ms` from Berlin, DE
4.152.116.40	AS8075 Microsoft Corporation	`0.17ms` from Boydton, US
177.89.78.168	AS28220 Alares Cabo Servicos de Telecomunicacoes S.A.	`14.32ms` from Fortaleza, BR
189.3.154.216	AS4230 CLARO S.A.	`12.11ms` from Fortaleza, BR
60.151.82.184	AS17676 SoftBank Corp.	`3.43ms` from Osaka, JP
15.228.76.168	AS16509 Amazon.com, Inc.	`1.78ms` from Osasco, BR
188.116.44.24	AS211875 Government of Jersey	`7.15ms` from Paris, FR
189.231.224.88	AS8151 UNINET	`14.89ms` from Phoenix, US
206.116.5.120	AS852 TELUS Communications Inc.	`14.41ms` from Seattle, US
8.214.147.8	AS45102 Alibaba (US) Technology Co., Ltd.	`0.94ms` from Singapore, SG
188.128.136.40	AS12824 home.pl S.A.	`0.88ms` from Warsaw, PL
186.31.63.152	AS19429 ETB - Colombia	`1.29ms` from Bogota, CO
84.192.121.40	AS6848 Telenet BV	`5.68ms` from Brussels, BE
13.247.112.200	AS16509 Amazon.com, Inc.	`0.69ms` from Cape Town, ZA

Traceroute

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

traceroute -a -n -q1 -f11 121.254.3.1

traceroute to 121.254.3.1 (121.254.3.1): 64 hops max, 52 byte packets

11 [AS23563] 121.254.3.1 322.955 ms

Measurement taken from

IPinfo ProbeNet in Lima, PE

On August 28th 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.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

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