121.254.28.0/24

AS23563 · SK Broadband Co Ltd

Need more data or want to access it via API or data downloads? Sign up to get free access

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

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

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

IP Address	ASN	Details
121.254.28.1	AS23563 SK Broadband Co Ltd	`1.38ms` 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
198.8.91.120	AS46562 Performive LLC	`0.53ms` from Atlanta, US
58.137.115.72	AS4750 CS LOXINFO PUBLIC COMPANY LIMITED	`1.55ms` from Bangkok, TH
68.146.146.152	AS6327 Shaw Communications Inc.	`5.37ms` from Calgary, CA
18.253.218.168	AS8987 Amazon Data Services Ireland Ltd	`8.74ms` from Chicago, US
13.121.89.24	AS36351 IBM Cloud	`0.83ms` from Madrid, ES
71.196.113.152	AS7922 Comcast Cable Communications, LLC	`7.51ms` from Miami, US
73.28.135.136	AS7922 Comcast Cable Communications, LLC	`9.51ms` from Miami, US
71.247.65.104	AS701 Verizon Business	`2.83ms` from New York City, US
68.230.9.200	AS22773 Cox Communications Inc.	`4.27ms` from Phoenix, US
207.150.243.152	AS18895 Nustream Communications	`0.29ms` from San Juan, PR
45.174.111.72	AS265574 IPTVTEL COMUNICACIONES S DE RL DE CV	`3.26ms` from Santiago de Queretaro, MX
51.20.30.56	AS16509 Amazon.com, Inc.	`0.14ms` from Stockholm, SE
81.233.242.136	AS3301 Telia Company AB	`0.71ms` from Stockholm, SE
36.70.113.248	AS7713 PT Telekomunikasi Indonesia	`1.69ms` from Surabaya, ID
126.251.30.40	AS131937 Joetsu Cable Vision	`5.68ms` from Tokyo, JP
104.199.95.24	AS396982 Google LLC	`0.14ms` from Brussels, BE
102.36.4.120	AS327794 Clear Access (Pty) Ltd	`1.85ms` from Johannesburg, ZA
105.156.20.56	AS36903 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM	`11.34ms` from Lisbon, PT
99.150.201.232	AS7018 AT&T Enterprises, LLC	`3.88ms` from Los Angeles, US
92.28.146.216	AS13285 TalkTalk Communications Limited	`5.11ms` from Manchester, GB
60.142.146.24	AS17676 SoftBank Corp.	`4.84ms` from Osaka, JP
123.48.168.168	AS18126 Chubu Telecommunications Company, Inc.	`9.33ms` from Osaka, JP
117.110.129.216	AS9316 DACOM-PUBNETPLUS	`1.88ms` from Seoul, KR
222.234.35.136	AS9318 SK Broadband Co Ltd	`6.87ms` from Seoul, KR
121.238.139.184	AS140292 CHINATELECOM Jiangsu province Suzhou 5G network	`6.20ms` from Shanghai, CN

Traceroute

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

traceroute -a -n -q1 -f2 121.254.28.35

traceroute to 121.254.28.35 (121.254.28.35): 64 hops max, 52 byte packets

2 [AS749] 11.73.6.141 0.608 ms

3 [AS749] 11.93.198.210 0.69 ms

4 [AS37963] 119.38.212.78 0.874 ms

5 *

6 *

7 *

8 [AS4808] 125.33.185.13 7.12 ms

9 *

10 *

11 *

12 [AS4837] 219.158.43.18 46.581 ms

13 *

14 *

15 *

16 *

17 *

18 [AS23563] 114.29.157.189 46.972 ms

19 [AS23563] 121.254.28.35 48.513 ms

Measurement taken from

IPinfo ProbeNet in Zhangjiakou, CN

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.

An API built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

Get Started for Free Contact Sales