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:         [email protected]
abuse-mailbox:  [email protected]
admin-c:        IM574-AP
tech-c:         IM574-AP
auth:           # Filtered
remarks:        [email protected] 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:         [email protected]
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:         [email protected]
nic-hdl:        IA10-KR
mnt-by:         MNT-KRNIC-AP
changed:        [email protected] 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:         [email protected]
nic-hdl:        IM10-KR
mnt-by:         MNT-KRNIC-AP
changed:        [email protected] 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	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
61.100.40.0/21	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 1,303 domain names hosted across 189 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	welltztower.com	13
61.100.80.13	duok.kr	7
61.100.80.12	bilab.kr	2
61.100.122.3	dopco.co.kr	1
61.100.80.15	bestplan.kr	1
61.100.80.11	ksaju.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

1,202 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
61.100.27.1	AS38676 flexnetworks	`1.17ms` from Seoul, KR
61.100.28.1	AS38676 flexnetworks	`0.82ms` from Incheon, KR
61.100.41.42	AS131866 Digital Edge Korea	`0.86ms` from Seoul, KR
61.100.48.17	AS131866 Digital Edge Korea	`1.19ms` from Seoul, KR
61.100.31.137	AS9848 SEJONG NETWORKS	`6.38ms` from Seoul, KR
61.100.71.21	AS9947 kt cloud Co., Ltd	`1.31ms` from Incheon, KR
61.100.122.95	AS9848 SEJONG NETWORKS	`1.49ms` from Seoul, KR
61.100.16.105	AS9848 SEJONG NETWORKS	`1.07ms` from Seoul, KR
61.100.26.85	AS38676 flexnetworks	`0.72ms` from Incheon, KR
61.100.60.80	AS9848 SEJONG NETWORKS	`0.85ms` from Seoul, KR
61.100.123.225	AS9848 SEJONG NETWORKS	`3.10ms` from Seoul, KR
61.100.0.69	AS9952 Hostway IDC	`1.04ms` from Seoul, KR
61.100.15.34	AS9952 Hostway IDC	`0.98ms` from Seoul, KR
61.100.10.165	AS9952 Hostway IDC	`1.13ms` from Seoul, KR
61.100.32.161	AS9848 SEJONG NETWORKS	`0.94ms` from Seoul, KR
61.100.25.1	AS38676 flexnetworks	`0.82ms` from Incheon, KR
61.100.3.139	AS9952 Hostway IDC	`1.05ms` from Seoul, KR
61.100.5.30	AS9952 Hostway IDC	`1.08ms` from Seoul, KR
61.100.40.22	AS131866 Digital Edge Korea	`0.77ms` from Seoul, KR
61.100.70.201	AS9848 SEJONG NETWORKS	`0.92ms` from Seoul, KR
61.100.14.7	AS9952 Hostway IDC	`1.09ms` from Seoul, KR
61.100.9.33	AS9952 Hostway IDC	`1.04ms` from Seoul, KR
61.100.11.193	AS9952 Hostway IDC	`1.29ms` from Seoul, KR
61.100.29.1	AS38676 flexnetworks	`0.84ms` from Incheon, KR
61.100.68.10	AS9848 SEJONG NETWORKS	`1.11ms` 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
185.35.137.1	AS212477 RoyaleHosting BV	`0.66ms` from Amsterdam, NL
62.163.172.1	AS33915 Vodafone Libertel B.V.	`6.44ms` from Amsterdam, NL
178.84.95.1	AS33915 Vodafone Libertel B.V.	`3.12ms` from Amsterdam, NL
45.148.155.65	AS43350 NForce Entertainment B.V.	`0.52ms` from Amsterdam, NL
151.250.196.1	AS34984 Superonline Iletisim Hizmetleri A.S.	`2.45ms` from Ankara, TR
152.3.1.97	AS13371 Duke University	`10.75ms` from Atlanta, US
146.85.116.1	AS400186 Singing River Connect, LLC	`12.81ms` from Atlanta, US
115.25.60.193	AS4538 China Education and Research Network Center	`3.21ms` from Beijing, CN
61.55.231.1	AS4837 CHINA UNICOM China169 Backbone	`8.58ms` from Beijing, CN
94.199.54.1	AS30836 23VNet Kft.	`0.19ms` from Budapest, HU
186.182.94.1	AS11664 Techtel LMDS Comunicaciones Interactivas S.A.	`12.68ms` from Buenos Aires, AR
190.108.19.1	AS20255 Tecnowind S.A.	`7.47ms` from Buenos Aires, AR
190.195.247.1	AS7303 Telecom Argentina S.A.	`1.20ms` from Buenos Aires, AR
186.138.108.1	AS7303 Telecom Argentina S.A.	`2.90ms` from Buenos Aires, AR
134.68.118.193	AS87 Indiana University	`4.18ms` from Chicago, US
80.199.58.1	AS3292 TDC Holding A/S	`1.17ms` from Copenhagen, DK
173.207.37.1	AS11492 CABLE ONE, INC.	`19.01ms` from Dallas, US
66.194.92.1	AS3549 Level 3 Parent, LLC	`6.28ms` from Dallas, US
98.43.33.129	AS7922 Comcast Cable Communications, LLC	`5.58ms` from Denver, US
212.80.238.193	AS8881 1&1 Versatel GmbH	`4.82ms` from Duesseldorf, DE
27.156.99.1	AS4134 CHINANET-BACKBONE	`1.94ms` from Fuzhou, CN
218.14.207.209	AS4134 CHINANET-BACKBONE	`9.55ms` from Guangzhou, CN
121.8.103.1	AS4134 CHINANET-BACKBONE	`4.75ms` from Guangzhou, CN
124.71.218.145	AS55990 Huawei Cloud Service data center	`1.55ms` from Guangzhou, CN
115.79.64.225	AS7552 Viettel Group	`1.40ms` from Ho Chi Minh City, VN

Traceroute

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

traceroute -a -n -q1 -f5 61.100.4.129

traceroute to 61.100.4.129 (61.100.4.129): 64 hops max, 52 byte packets

5 [AS9848] 211.239.201.14 38.272 ms

6 [AS9848] 61.250.127.106 39.062 ms

7 [AS9952] 150.107.71.218 37.286 ms

8 *

9 [AS9952] 61.100.4.129 38.141 ms

Measurement taken from

IPinfo ProbeNet in Hong Kong, HK

On January 19th 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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