223.28.176.0/21

AS17597 · SK Broadband Co Ltd

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Summary

Country	South Korea
Domain	skbroadband.com
ASN	AS17597
Parent Range	223.28.128.0/17
Registry	APNIC
ID	TBROAD

WHOIS Details

inetnum:        223.28.128.0 - 223.28.255.255
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:  2020-12-29T05:46:19Z
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:        223.28.128.0 - 223.28.255.255
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

Overlapping Ranges

BGP prefixes that contain 223.28.176.0/21

Range	ASN	Company	Num of IPs
223.28.128.0/17	AS17597	SK Broadband Co Ltd	32,768

Nearby Ranges

BGP prefixes that overlap with 223.28.0.0/16

Range	ASN	Company	Num of IPs
223.28.128.0/17	AS17597	SK Broadband Co Ltd	32,768
223.28.0.0/17	AS9930	TT DOTCOM SDN BHD	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

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

IP Address	ASN	Details
223.28.177.1	AS17597 SK Broadband Co Ltd	`2.01ms` from Seoul, KR
223.28.181.1	AS17597 SK Broadband Co Ltd	`2.07ms` from Seoul, KR
223.28.180.0	AS17597 SK Broadband Co Ltd	`1.99ms` from Seoul, KR
223.28.176.1	AS17597 SK Broadband Co Ltd	`2.01ms` from Seoul, KR
223.28.179.255	AS17597 SK Broadband Co Ltd	`2.47ms` from Seoul, KR
223.28.178.255	AS17597 SK Broadband Co Ltd	`2.08ms` from Seoul, KR
223.28.183.1	AS17597 SK Broadband Co Ltd	`2.16ms` from Seoul, KR
223.28.182.255	AS17597 SK Broadband Co Ltd	`2.27ms` 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
162.238.88.165	AS7018 AT&T Enterprises, LLC	`17.46ms` from Atlanta, US
216.176.141.165	AS6368 Northwestern Indiana Telephone Co.	`6.90ms` from Chicago, US
136.60.22.85	AS16591 Google Fiber Inc.	`5.09ms` from Dallas, US
206.124.219.229	AS5009 REV	`11.78ms` from Dallas, US
47.242.235.229	AS45102 Alibaba (US) Technology Co., Ltd.	`0.69ms` from Hong Kong, HK
94.45.46.53	AS15683 "AS6723" LIMITED LIABILITY COMPANY	`0.14ms` from Kyiv, UA
23.224.90.181	AS40065 CNSERVERS LLC	`0.25ms` from Los Angeles, US
115.212.178.213	AS4134 CHINANET-BACKBONE	`6.04ms` from Ningbo, CN
27.89.84.213	AS2516 KDDI CORPORATION	`8.46ms` from Osaka, JP
191.255.114.133	AS27699 TELEFÔNICA BRASIL S.A	`4.00ms` from Osasco, BR
193.86.119.5	AS13036 T-Mobile Czech Republic a.s.	`6.21ms` from Prague, CZ
54.91.139.229	AS14618 Amazon.com, Inc.	`0.22ms` from Reston, US
31.148.24.85	AS48709 World of connections Ltd.	`5.87ms` from Samara, RU
32.216.244.101	AS46690 Southern New England Telephone Company and SNET America, Inc.	`4.00ms` from Secaucus, US
106.115.186.101	AS4134 CHINANET-BACKBONE	`4.28ms` from Shijiazhuang, CN
103.215.178.197	AS9341 PT INDONESIA COMNETS PLUS	`2.55ms` from Singapore, SG
178.59.149.37	AS3329 VODAFONE-PANAFON HELLENIC TELECOMMUNICATIONS COMPANY SA	`7.66ms` from Sofia, BG
186.210.252.5	AS53006 ALGAR TELECOM S/A	`11.47ms` from São Paulo, BR
133.130.194.181	AS2514 NTT PC Communications, Inc.	`2.54ms` from Tokyo, JP
62.165.32.229	AS28745 Joint Stock Company TransTeleCom	`3.38ms` from Yekaterinburg, RU
170.187.145.181	AS63949 Akamai Connected Cloud	`0.35ms` from Atlanta, US
91.180.180.37	AS5432 Proximus NV	`2.25ms` from Brussels, BE
181.96.6.165	AS7303 Telecom Argentina S.A.	`0.40ms` from Cordoba, AR
24.10.2.197	AS7922 Comcast Cable Communications, LLC	`9.13ms` from Fremont, US
14.232.54.53	AS45899 VNPT Corp	`1.89ms` from Hanoi, VN

Traceroute

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

traceroute -a -n -q1 -f2 223.28.176.50

traceroute to 223.28.176.50 (223.28.176.50): 64 hops max, 52 byte packets

2 [AS23961] 156.0.200.34 0.103 ms

3 *

4 [AS60068] 185.229.189.198 0.11 ms

5 [] 36.255.56.203 0.3 ms

6 *

7 *

8 *

9 *

10 *

11 *

12 *

13 [AS17597] 223.28.176.50 87.578 ms

Measurement taken from

IPinfo ProbeNet in Hong Kong, HK

On December 6th 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.

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