121.254.58.0/24

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

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

IP Address	ASN	Details
121.254.58.1	AS23563 SK Broadband Co Ltd	`1.70ms` 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
41.36.74.56	AS8452 TE-AS	`3.57ms` from Cairo, EG
84.238.118.232	AS33796 BOLIGNET-AARHUS F.M.B.A.	`1.13ms` from Copenhagen, DK
169.136.163.24	AS10122 NETSTAR (SG) PTE. LTD.	`0.23ms` from Frankfurt am Main, DE
123.17.126.216	AS45899 VNPT Corp	`2.17ms` from Hanoi, VN
86.109.117.200	AS16371 acens Technologies, S.L.	`1.15ms` from Madrid, ES
176.190.165.56	AS5410 Bouygues Telecom SA	`2.16ms` from Marseille, FR
73.131.47.136	AS7922 Comcast Cable Communications, LLC	`19.39ms` from Miami, US
82.85.241.184	AS8612 Tiscali Italia S.P.A.	`15.26ms` from Milan, IT
154.123.242.8	AS12455 Kenyan Post & Telecommunications Company / Telkom Kenya Ltd	`11.56ms` from Nairobi, KE
74.76.193.24	AS11351 Charter Communications Inc	`12.19ms` from New York City, US
186.214.67.120	AS18881 TELEFÔNICA BRASIL S.A	`19.52ms` from Osasco, BR
162.244.56.40	AS32354 Unwired	`0.26ms` from San Jose, US
24.4.190.184	AS7922 Comcast Cable Communications, LLC	`7.37ms` from San Jose, US
59.8.172.88	AS4766 Korea Telecom	`1.70ms` from Seoul, KR
43.249.99.56	AS131274 Cypresstel Global Network	`0.43ms` from Singapore, SG
121.20.157.104	AS4837 CHINA UNICOM China169 Backbone	`12.92ms` from Tianjin, CN
23.43.39.152	AS23693 PT. Telekomunikasi Selular	`7.23ms` from Batam, ID
101.126.147.168	AS137718 Beijing Volcano Engine Technology Co., Ltd.	`5.41ms` from Beijing, CN
102.191.2.232	AS24835 Vodafone Data	`5.15ms` from Cairo, EG
139.155.11.232	AS45090 Shenzhen Tencent Computer Systems Company Limited	`0.78ms` from Chengdu, CN
102.130.72.8	AS328386 Adnexus Celerity Networks (Proprietary) Limited	`1.16ms` from Johannesburg, ZA
86.61.101.24	AS5603 Telekom Slovenije, d.d.	`5.08ms` from Ljubljana, SI
20.39.210.168	AS8075 Microsoft Corporation	`0.21ms` from London, GB
185.98.65.24	AS41114 ORNE THD SPL	`1.87ms` from Luxembourg, LU
181.140.50.216	AS13489 UNE EPM TELECOMUNICACIONES S.A.	`7.77ms` from Medellin, CO

Traceroute

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

traceroute -a -n -q1 -f5 121.254.58.171

traceroute to 121.254.58.171 (121.254.58.171): 64 hops max, 52 byte packets

5 [AS9318] 110.9.3.45 1.396 ms

6 *

7 *

8 *

9 *

10 [AS23563] 121.254.58.171 11.051 ms

Measurement taken from

IPinfo ProbeNet in Seoul, KR

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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