117.20.216.0/21

AS9981 · Saero Network Service LTD

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Summary

Country	South Korea
Domain	kthcn.co.kr
ASN	AS9981
Parent Range	117.20.192.0/18
Registry	APNIC
ID	HCN

WHOIS Details

inetnum:        117.20.192.0 - 117.20.255.255
netname:        HCN
descr:          HYUNDAI COMMUNICATIONS   NETWORK
country:        KR
admin-c:        IM699-AP
tech-c:         IM699-AP
status:         ALLOCATED PORTABLE
mnt-by:         MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
last-modified:  2019-04-29T07:39:53Z
source:         APNIC

irt:            IRT-KRNIC-KR
address:        9, Jinheung-gil, Naju-si, Jeollanam-do
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:  2025-09-04T01:00:01Z
source:         APNIC

person:         IP Manager
address:        Seoul Mapo-gu Maebongsan-ro 75
country:        KR
phone:          +82-2-1877-8000
e-mail:         hcn_ipadm@kthcn.co.kr
nic-hdl:        IM699-AP
mnt-by:         MNT-KRNIC-AP
last-modified:  2025-09-22T00:20:02Z
source:         APNIC

inetnum:        117.20.192.0 - 117.20.255.255
netname:        HCN-KR
descr:          HYUNDAI COMMUNICATIONS   NETWORK
country:        KR
admin-c:        IA82-KR
tech-c:         IM82-KR
status:         ALLOCATED PORTABLE
mnt-by:         MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
changed:        hostmaster@nic.or.kr 20240912
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.
source:         KRNIC

person:         IP Manager
address:        Seoul Mapo-gu Maebongsan-ro 75
address:        HCN
country:        KR
phone:          +82-2-1877-8000
e-mail:         hcn_ipadm@kthcn.co.kr
nic-hdl:        IA82-KR
mnt-by:         MNT-KRNIC-AP
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.
source:         KRNIC

person:         IP Manager
address:        Seoul Mapo-gu Maebongsan-ro 75
address:        HCN
country:        KR
phone:          +82-2-1877-8000
e-mail:         hcn_ipadm@kthcn.co.kr
nic-hdl:        IM82-KR
mnt-by:         MNT-KRNIC-AP
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.
source:         KRNIC

Overlapping Ranges

BGP prefixes that contain 117.20.216.0/21

Range	ASN	Company	Num of IPs
117.20.192.0/18	AS9981	kt HCN Co.,Ltd.	16,384

Nearby Ranges

BGP prefixes that overlap with 117.20.0.0/16

Range	ASN	Company	Num of IPs
117.20.128.0/18	AS138345	StarHub Internet Pte Ltd	16,384
117.20.128.0/18	AS4657	StarHub Internet Pte Ltd	16,384
117.20.192.0/18	AS9981	kt HCN Co.,Ltd.	16,384
117.20.80.0/20	AS18310	SK Broadband Co Ltd	4,096
117.20.96.0/20	AS9597	KDDI Web Communications Inc.	4,096
117.20.0.0/20	AS45671	Servers Australia Pty Ltd	4,096
117.20.48.0/20	AS23951	PT Jembatan Citra Nusantara	4,096
117.20.112.0/21	AS45498	Smart Axiata Co.,Ltd.	2,048
117.20.72.0/21	AS23639	Internet Data Center	2,048
117.20.120.0/21	AS9246	TeleGuam Holdings, LLC	2,048
117.20.64.0/21	AS4764	Westvic Broadband Pty Ltd	2,048
117.20.40.0/23	AS14636	Internap Network Services (Singapore) Co. Ltd.	512
117.20.40.0/23	AS32475	Internap Network Services (Singapore) Co. Ltd.	512
117.20.40.0/23	AS32475	Internap Network Services (Singapore) Co. Ltd.	512
117.20.40.0/23	AS14636	Internap Network Services (Singapore) Co. Ltd.	512
117.20.116.0/24	AS45498	Smart Axiata Co., Ltd.	256
117.20.117.0/24	AS45498	Smart Axiata Co., Ltd.	256
117.20.118.0/24	AS45498	Smart Axiata Co., Ltd.	256
117.20.119.0/24	AS45498	Smart Axiata Co., Ltd.	256
117.20.114.0/24	AS45498	Smart Axiata Co., Ltd.	256
117.20.33.0/24	AS45879	Broadband ADSL 128	256
117.20.34.0/24	AS45879	Broadband ADSL Pool 2	256
117.20.35.0/24	AS45879	Broadband ADSL Pool 3	256
117.20.38.0/24	AS45879	Broadband ADSL Pool 5 - Wallis islands	256
117.20.39.0/24	AS45879	Broadband ADSL Pool 6 - Wallis islands	256
117.20.113.0/24	AS45498	Smart Axiata Co., Ltd.	256
117.20.112.0/24	AS45498	Smart Axiata Co., Ltd.	256
117.20.47.0/24	AS393954	cfnservices-10	256
117.20.42.0/24	AS14148	exlibris	256
117.20.115.0/24	AS45498	Smart Axiata Co., Ltd.	256

Hosted domains

There are 7 domain names hosted across 1 IP address on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP

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

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

IP Address	ASN	Details
117.20.220.1	AS9981 Saero Network Service LTD	`6.04ms` from Seoul, KR
117.20.221.1	AS9981 Saero Network Service LTD	`6.02ms` from Seoul, KR
117.20.218.1	AS9981 Saero Network Service LTD	`6.25ms` from Seoul, KR
117.20.222.1	AS9981 Saero Network Service LTD	`6.37ms` from Seoul, KR
117.20.216.240	AS9981 Saero Network Service LTD	`5.74ms` from Seoul, KR
117.20.217.1	AS9981 Saero Network Service LTD	`6.07ms` from Seoul, KR
117.20.219.1	AS9981 Saero Network Service LTD	`6.44ms` from Seoul, KR
117.20.223.1	AS9981 Saero Network Service LTD	`6.26ms` 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
209.38.202.85	AS14061 DigitalOcean, LLC	`0.42ms` from Frankfurt am Main, DE
146.59.195.229	AS16276 OVH SAS	`0.14ms` from Gravelines, FR
121.14.37.197	AS4134 CHINANET-BACKBONE	`1.84ms` from Guangzhou, CN
36.22.112.69	AS4134 CHINANET-BACKBONE	`8.99ms` from Hangzhou, CN
58.221.227.213	AS4134 CHINANET-BACKBONE	`6.46ms` from Huai'an, CN
180.245.59.5	AS7713 PT Telekomunikasi Indonesia	`2.55ms` from Jakarta, ID
82.190.26.101	AS3269 Telecom Italia S.p.A.	`0.77ms` from Milan, IT
82.62.216.69	AS3269 Telecom Italia S.p.A.	`5.35ms` from Milan, IT
177.7.16.229	AS8167 V tal	`1.10ms` from Novo Hamburgo, BR
211.125.178.165	AS2516 KDDI CORPORATION	`14.63ms` from Osaka, JP
72.201.226.165	AS22773 Cox Communications Inc.	`2.28ms` from Phoenix, US
75.67.149.53	AS7922 Comcast Cable Communications, LLC	`6.75ms` from Providence, US
150.109.251.229	AS132203 Tencent Building, Kejizhongyi Avenue	`0.83ms` from Seoul, KR
52.76.56.5	AS16509 Amazon.com, Inc.	`0.12ms` from Singapore, SG
2.18.24.85	AS20940 Akamai International B.V.	`0.29ms` from Singapore, SG
91.115.105.133	AS8447 A1 Telekom Austria AG	`5.02ms` from Vienna, AT
182.112.183.117	AS4837 CHINA UNICOM China169 Backbone	`7.30ms` from Zhengzhou, CN
143.103.110.53	AS19901 Brightspeed	`10.05ms` from Atlanta, US
64.79.199.197	AS29873 Newfold Digital, Inc.	`0.24ms` from Boston, US
71.235.105.133	AS7922 Comcast Cable Communications, LLC	`9.63ms` from Boston, US
113.160.231.5	AS45899 VNPT Corp	`3.13ms` from Da Nang, VN
5.31.10.53	AS15802 Emirates Integrated Telecommunications Company PJSC	`3.43ms` from Dubai, AE
151.80.186.197	AS16276 OVH SAS	`0.12ms` from Gravelines, FR
187.144.131.197	AS8151 UNINET	`0.99ms` from Guadalajara, MX
129.204.195.181	AS45090 Shenzhen Tencent Computer Systems Company Limited	`2.00ms` from Guangzhou, CN

Traceroute

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

traceroute -a -n -q1 117.20.217.109

traceroute to 117.20.217.109 (117.20.217.109): 64 hops max, 52 byte packets

1 [AS31898] 140.91.214.59 0.064 ms

2 [] 139.150.100.233 0.737 ms

3 [] 139.150.100.36 7.973 ms

4 [AS7562] 111.118.20.218 6.441 ms

5 *

6 *

7 [AS9981] 117.20.217.109 6.741 ms

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On November 22nd 2025

What are IP address ranges?

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