61.100.0.0/17

AS9848 · SEJONG NETWORKS

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Summary

Country	South Korea
Domain	sejongnetworks.com
ASN	AS9848
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 are contained by 61.100.0.0/17

Range	ASN	Company	Num of IPs
61.100.29.0/24	AS38676	FLEXNET	256
61.100.25.0/24	AS38676	FLEXNET	256
61.100.26.0/24	AS38676	FLEXNET	256
61.100.27.0/24	AS38676	FLEXNET	256
61.100.28.0/24	AS38676	FLEXNET	256
61.100.12.0/24	AS9952	Hostway	256
61.100.13.0/24	AS9952	Hostway	256
61.100.40.0/21	AS131866	Digital Edge Korea	2,048
61.100.48.0/21	AS131866	Digital Edge Korea	2,048

Nearby Ranges

BGP prefixes that overlap with 61.100.0.0/16

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

Hosted domains

There are 1,302 domain names hosted across 191 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
61.100.16.132	kccworld.net	13
61.100.80.13	chamsaju.net	7
61.100.80.12	bilab.kr	2
61.100.122.3	dopco.co.kr	1
61.100.80.11	ksaju.kr	1
61.100.80.15	bestplan.kr	1
61.100.80.14	xpe.kr	1

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

1,379 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
61.100.29.136	AS38676 flexnetworks	`1.00ms` from Seoul, KR
61.100.123.225	AS9848 SEJONG NETWORKS	`2.37ms` from Seoul, KR
61.100.10.233	AS9952 Hostway IDC	`1.02ms` from Seoul, KR
61.100.2.37	AS9952 Hostway IDC	`0.99ms` from Seoul, KR
61.100.122.34	AS9848 SEJONG NETWORKS	`1.40ms` from Seoul, KR
61.100.61.224	AS9848 SEJONG NETWORKS	`6.37ms` from Seoul, KR
61.100.33.250	AS9848 SEJONG NETWORKS	`6.81ms` from Seoul, KR
61.100.70.254	AS9848 SEJONG NETWORKS	`0.87ms` from Seoul, KR
61.100.48.17	AS131866 Digital Edge Korea	`1.16ms` from Seoul, KR
61.100.27.1	AS38676 flexnetworks	`1.13ms` from Seoul, KR
61.100.17.103	AS9848 SEJONG NETWORKS	`1.07ms` from Seoul, KR
61.100.36.223	AS9848 SEJONG NETWORKS	`6.68ms` from Seoul, KR
61.100.40.14	AS131866 Digital Edge Korea	`0.78ms` from Seoul, KR
61.100.18.164	AS9848 SEJONG NETWORKS	`5.04ms` from Seoul, KR
61.100.32.10	AS9848 SEJONG NETWORKS	`0.85ms` from Seoul, KR
61.100.1.148	AS9952 Hostway IDC	`1.07ms` from Seoul, KR
61.100.9.222	AS9952 Hostway IDC	`1.05ms` from Seoul, KR
61.100.0.100	AS9952 Hostway IDC	`0.99ms` from Seoul, KR
61.100.11.206	AS9952 Hostway IDC	`1.14ms` from Seoul, KR
61.100.26.254	AS38676 flexnetworks	`1.08ms` from Seoul, KR
61.100.12.218	AS9952 Hostway IDC	`0.99ms` from Seoul, KR
61.100.14.7	AS9952 Hostway IDC	`1.08ms` from Seoul, KR
61.100.38.1	AS9848 SEJONG NETWORKS	`1.61ms` from Seoul, KR
61.100.5.30	AS9952 Hostway IDC	`1.12ms` from Seoul, KR
61.100.39.244	AS9848 SEJONG NETWORKS	`6.47ms` 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
37.251.28.97	AS1136 KPN B.V.	`2.10ms` from Amsterdam, NL
217.100.16.225	AS33915 Vodafone Libertel B.V.	`0.48ms` from Amsterdam, NL
204.93.105.1	AS26827 EPB Fiber Optics	`3.43ms` from Atlanta, US
12.201.56.129	AS7018 AT&T Enterprises, LLC	`1.10ms` from Atlanta, US
98.230.13.17	AS7922 Comcast Cable Communications, LLC	`9.86ms` from Atlanta, US
171.96.150.1	AS17552 True Online	`1.57ms` from Bangkok, TH
61.90.21.1	AS17552 True Online	`8.93ms` from Bangkok, TH
77.191.3.17	AS6805 Telefonica Germany GmbH & Co.OHG	`5.19ms` from Berlin, DE
200.118.224.1	AS10620 Telmex Colombia S.A.	`3.51ms` from Bogota, CO
188.80.134.1	AS3243 MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A.	`0.56ms` from Braga, PT
94.199.54.1	AS30836 23VNet Kft.	`0.17ms` from Budapest, HU
162.191.68.17	AS21928 T-Mobile USA, Inc.	`17.39ms` from Chicago, US
12.214.244.33	AS7018 AT&T Enterprises, LLC	`6.93ms` from Chicago, US
92.115.130.1	AS8926 Moldtelecom SA	`2.73ms` from Chisinau, MD
157.182.91.33	AS12118 West Virginia University	`10.24ms` from Columbus, US
38.194.100.1	AS15081 Omni Fiber	`3.32ms` from Columbus, US
141.217.58.177	AS237 Merit Network Inc.	`1.24ms` from Detroit, US
66.84.127.1	AS27216 Air Advantage LLC	`3.09ms` from Detroit, US
37.50.0.1	AS3320 Deutsche Telekom AG	`3.67ms` from Frankfurt am Main, DE
175.44.68.1	AS4837 CHINA UNICOM China169 Backbone	`12.16ms` from Fuzhou, CN
52.124.86.81	AS11260 EastLink	`1.08ms` from Halifax, CA
12.19.203.49	AS7018 AT&T Enterprises, LLC	`6.70ms` from Kansas City, US
174.134.64.1	AS33363 Charter Communications, Inc	`5.50ms` from Los Angeles, US
93.25.134.1	AS15557 Societe Francaise Du Radiotelephone - SFR SA	`11.95ms` from Lyon, FR
216.70.29.193	AS47096 Compudyne, Inc.	`3.88ms` from Minneapolis, US

Traceroute

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

traceroute -a -n -q1 61.100.1.158

traceroute to 61.100.1.158 (61.100.1.158): 64 hops max, 52 byte packets

1 [AS15169] 72.14.239.92 174.66 ms

2 [AS9848] 61.109.130.121 212.04 ms

3 [AS9848] 211.239.201.170 196.279 ms

4 [AS9848] 61.250.127.106 190.283 ms

5 [AS9952] 150.107.71.218 188.999 ms

6 *

7 *

8 [AS9952] 61.100.1.158 190.072 ms

Measurement taken from

IPinfo ProbeNet in Dallas, US

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.

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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