61.100.0.0/20

AS9952 · Hostway IDC

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Summary

Country	South Korea
Domain	sejongnetworks.com
ASN	AS9952
Parent Range	61.100.0.0/17
Registry	APNIC
ID	SEJONG-KR

WHOIS Details

inetnum:        61.100.0.0 - 61.100.127.255
netname:        SEJONG
descr:          SEJONG NETWORKS
country:        KR
admin-c:        IM686-AP
tech-c:         IM686-AP
status:         ALLOCATED PORTABLE
mnt-by:         MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
last-modified:  2025-11-03T05:34:02Z
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:        12 Gwacheon-daero 7-gil, Gwacheon-si, Gyeonggi-do
country:        KR
phone:          +82-2-1688-2200
e-mail:         ip@sejongnetworks.com
nic-hdl:        IM686-AP
mnt-by:         MNT-KRNIC-AP
last-modified:  2024-09-10T08:42:02Z
source:         APNIC

inetnum:        61.100.0.0 - 61.100.127.255
netname:        SEJONG-KR
descr:          SEJONG NETWORKS
country:        KR
admin-c:        IA10-KR
tech-c:         IM10-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.
source:         KRNIC

person:         IP Manager
address:        12 Gwacheon-daero 7-gil, Gwacheon-si, Gyeonggi-do
address:        (Galhyeondong)
country:        KR
phone:          +82-2-1688-2200
e-mail:         ip@sejongnetworks.com
nic-hdl:        IA10-KR
mnt-by:         MNT-KRNIC-AP
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:        12 Gwacheon-daero 7-gil, Gwacheon-si, Gyeonggi-do
address:        (Galhyeondong)
country:        KR
phone:          +82-2-1688-2200
e-mail:         ip@sejongnetworks.com
nic-hdl:        IM10-KR
mnt-by:         MNT-KRNIC-AP
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

Overlapping Ranges

BGP prefixes that contain 61.100.0.0/20

Range	ASN	Company	Num of IPs
61.100.0.0/17	AS214432	SEJONG NETWORKS	32,768
61.100.0.0/17	AS9848	SEJONG NETWORKS	32,768
61.100.0.0/17	AS9947	SEJONG NETWORKS	32,768
61.100.0.0/17	AS152294	SEJONG NETWORKS	32,768
61.100.0.0/17	AS9952	SEJONG NETWORKS	32,768

BGP prefixes that are contained by 61.100.0.0/20

Range	ASN	Company	Num of IPs
61.100.12.0/24	AS9952	Hostway	256
61.100.13.0/24	AS9952	Hostway	256

Nearby Ranges

BGP prefixes that overlap with 61.100.0.0/16

Range	ASN	Company	Num of IPs
61.100.0.0/17	AS9947	SEJONG NETWORKS	32,768
61.100.0.0/17	AS9848	SEJONG NETWORKS	32,768
61.100.0.0/17	AS152294	SEJONG NETWORKS	32,768
61.100.0.0/17	AS214432	SEJONG NETWORKS	32,768
61.100.0.0/17	AS9952	SEJONG NETWORKS	32,768
61.100.128.0/18	AS9952	SEJONG NETWORKS	16,384
61.100.128.0/18	AS9848	SEJONG NETWORKS	16,384
61.100.192.0/19	AS18310	SK Broadband Co Ltd	8,192
61.100.240.0/21	AS45372	ULNetworks Co., Ltd.	2,048
61.100.48.0/21	AS131866	Digital Edge Korea	2,048
61.100.40.0/21	AS131866	Digital Edge Korea	2,048
61.100.28.0/24	AS38676	FLEXNET	256
61.100.25.0/24	AS38676	FLEXNET	256
61.100.29.0/24	AS38676	FLEXNET	256
61.100.26.0/24	AS38676	FLEXNET	256
61.100.185.0/24	AS9952	Hostway	256
61.100.12.0/24	AS9952	Hostway	256
61.100.13.0/24	AS9952	Hostway	256
61.100.183.0/24	AS9952	Hostway	256
61.100.186.0/24	AS9952	Hostway	256
61.100.27.0/24	AS38676	FLEXNET	256

Hosted domains

There are 1,272 domain names hosted across 182 IP addresses 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

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

IP Address	ASN	Details
61.100.5.31	AS9952 Hostway IDC	`1.02ms` from Seoul, KR
61.100.4.84	AS9952 Hostway IDC	`1.04ms` from Seoul, KR
61.100.0.100	AS9952 Hostway IDC	`1.01ms` from Seoul, KR
61.100.2.37	AS9952 Hostway IDC	`1.04ms` from Seoul, KR
61.100.6.7	AS9952 Hostway IDC	`1.07ms` from Seoul, KR
61.100.9.88	AS9952 Hostway IDC	`1.02ms` from Seoul, KR
61.100.10.233	AS9952 Hostway IDC	`1.07ms` from Seoul, KR
61.100.15.34	AS9952 Hostway IDC	`0.95ms` from Seoul, KR
61.100.11.196	AS9952 Hostway IDC	`1.16ms` from Seoul, KR
61.100.3.139	AS9952 Hostway IDC	`1.03ms` from Seoul, KR
61.100.7.149	AS9952 Hostway IDC	`1.02ms` from Seoul, KR
61.100.1.149	AS9952 Hostway IDC	`1.05ms` from Seoul, KR
61.100.13.231	AS9952 Hostway IDC	`1.08ms` from Seoul, KR
61.100.14.65	AS9952 Hostway IDC	`1.10ms` from Seoul, KR
61.100.12.218	AS9952 Hostway IDC	`0.99ms` 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
84.84.10.68	AS1136 KPN B.V.	`0.92ms` from Amsterdam, NL
77.172.179.148	AS1136 KPN B.V.	`2.16ms` from Amsterdam, NL
83.212.4.212	AS5408 National Infrastructures for Research and Technology S.A.	`1.18ms` from Athens, GR
171.7.121.132	AS45758 Triple T Broadband Public Company Limited	`2.86ms` from Bangkok, TH
111.200.21.244	AS4808 China Unicom Beijing Province Network	`3.16ms` from Beijing, CN
79.132.246.4	AS9031 EDPNETapp	`1.39ms` from Brussels, BE
197.64.70.20	AS12091 MTN SA	`18.69ms` from Centurion, ZA
70.123.186.132	AS11427 Charter Communications Inc	`4.74ms` from Dallas, US
74.244.152.116	AS14593 Space Exploration Technologies Corporation	`14.25ms` from Miami, US
134.199.98.100	AS23089 Hotwire Communications	`3.14ms` from Miami, US
95.248.20.228	AS3269 Telecom Italia S.p.A.	`2.71ms` from Milan, IT
82.29.162.68	AS47583 Hostinger International Limited	`0.34ms` from Mumbai, IN
4.227.110.100	AS8075 Microsoft Corporation	`0.37ms` from Phoenix, US
3.213.128.212	AS14618 Amazon.com, Inc.	`0.17ms` from Reston, US
218.110.202.36	AS2527 Sony Network Communications Inc.	`2.61ms` from Tokyo, JP
153.177.116.180	AS4713 NTT DOCOMO BUSINESS,Inc.	`3.48ms` from Tokyo, JP
59.106.4.212	AS9370 SAKURA Internet Inc.	`0.65ms` from Tokyo, JP
95.97.83.36	AS33915 Vodafone Libertel B.V.	`5.66ms` from Amsterdam, NL
58.136.243.164	AS133481 AIS Fibre	`3.56ms` from Bangkok, TH
76.223.120.132	AS16509 Amazon.com, Inc.	`0.04ms` from Bangkok, TH
186.98.74.148	AS3816 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC	`2.49ms` from Bogota, CO
179.38.6.228	AS22927 Telefonica de Argentina	`1.32ms` from Buenos Aires, AR
209.44.242.116	AS17306 JAB Wireless, INC.	`9.74ms` from Dallas, US
62.128.186.180	AS12440 Hughes Network Systems GmbH	`0.33ms` from Frankfurt am Main, DE
91.61.36.228	AS3320 Deutsche Telekom AG	`6.67ms` from Frankfurt am Main, DE

Traceroute

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

traceroute -a -n -q1 -f3 61.100.10.131

traceroute to 61.100.10.131 (61.100.10.131): 64 hops max, 52 byte packets

3 [AS23764] 5.154.154.229 10.664 ms

4 *

5 *

6 *

7 [AS9848] 211.239.201.2 229.459 ms

8 [AS9848] 61.250.127.106 229.319 ms

9 [AS9952] 150.107.71.242 233.905 ms

10 *

11 [AS9952] 61.100.180.205 229.071 ms

12 [AS9952] 61.100.10.131 229.281 ms

Measurement taken from

IPinfo ProbeNet in Luxembourg, LU

On March 29th 2026

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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