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	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 190 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.net	13
61.100.80.13	jabcd.com	7
61.100.80.12	bilab.kr	2
61.100.80.14	xpe.kr	1
61.100.80.11	ksaju.kr	1
61.100.80.15	bestplan.kr	1
61.100.122.3	dopco.co.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
61.100.48.17	AS131866 Digital Edge Korea	`1.19ms` from Seoul, KR
61.100.28.1	AS38676 flexnetworks	`0.82ms` from Incheon, KR
61.100.2.84	AS9952 Hostway IDC	`1.04ms` from Seoul, KR
61.100.11.193	AS9952 Hostway IDC	`1.29ms` from Seoul, KR
61.100.34.239	AS9848 SEJONG NETWORKS	`6.43ms` from Seoul, KR
61.100.6.126	AS9952 Hostway IDC	`1.02ms` from Seoul, KR
61.100.60.80	AS9848 SEJONG NETWORKS	`0.85ms` from Seoul, KR
61.100.32.161	AS9848 SEJONG NETWORKS	`0.94ms` from Seoul, KR
61.100.7.147	AS9952 Hostway IDC	`1.02ms` from Seoul, KR
61.100.122.95	AS9848 SEJONG NETWORKS	`1.49ms` from Seoul, KR
61.100.0.69	AS9952 Hostway IDC	`1.04ms` from Seoul, KR
61.100.18.182	AS9848 SEJONG NETWORKS	`5.04ms` from Seoul, KR
61.100.13.149	AS9952 Hostway IDC	`1.15ms` from Seoul, KR
61.100.5.30	AS9952 Hostway IDC	`1.08ms` from Seoul, KR
61.100.17.104	AS9848 SEJONG NETWORKS	`1.10ms` from Seoul, KR
61.100.80.21	AS9848 SEJONG NETWORKS	`5.60ms` from Seoul, KR
61.100.3.139	AS9952 Hostway IDC	`1.05ms` from Seoul, KR
61.100.123.225	AS9848 SEJONG NETWORKS	`3.10ms` from Seoul, KR
61.100.35.84	AS9848 SEJONG NETWORKS	`6.27ms` from Seoul, KR
61.100.26.85	AS38676 flexnetworks	`0.72ms` from Incheon, KR
61.100.71.21	AS9947 kt cloud Co., Ltd	`1.31ms` from Incheon, KR
61.100.29.1	AS38676 flexnetworks	`0.84ms` from Incheon, KR
61.100.36.63	AS9848 SEJONG NETWORKS	`6.63ms` from Seoul, KR
61.100.10.165	AS9952 Hostway IDC	`1.13ms` from Seoul, KR
61.100.40.22	AS131866 Digital Edge Korea	`0.77ms` 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
184.186.142.1	AS22773 Cox Communications Inc.	`5.30ms` from Ashburn, US
69.134.94.1	AS7843 Charter Communications Inc	`7.72ms` from Ashburn, US
4.4.10.225	AS3356 Level 3 Parent, LLC	`0.92ms` from Atlanta, US
70.159.33.1	AS6389 AT&T Enterprises, LLC	`13.70ms` from Atlanta, US
161.246.235.1	AS9486 King Mongkut's Institute of Technology Ladkrabang	`2.24ms` from Bangkok, TH
125.39.101.33	AS4837 CHINA UNICOM China169 Backbone	`6.32ms` from Beijing, CN
152.170.140.1	AS7303 Telecom Argentina S.A.	`7.71ms` from Buenos Aires, AR
181.229.117.1	AS7303 Telecom Argentina S.A.	`1.31ms` from Buenos Aires, AR
24.83.4.97	AS6327 Shaw Communications	`0.84ms` from Calgary, CA
218.77.56.97	AS4134 CHINANET-BACKBONE	`1.46ms` from Changsha, CN
139.200.53.1	AS4134 CHINANET-BACKBONE	`11.28ms` from Chengdu, CN
118.185.149.1	AS55410 Vodafone Idea Ltd	`1.95ms` from Chennai, IN
173.203.45.97	AS19994 Rackspace Hosting	`1.26ms` from Chicago, US
96.172.151.209	AS53297 Comcast Cable Communications, LLC	`0.07ms` from Chicago, US
74.93.58.113	AS7922 Comcast Cable Communications, LLC	`4.69ms` from Chicago, US
59.89.99.1	AS9829 National Internet Backbone	`5.17ms` from Delhi, IN
207.241.140.65	AS26271 CMSInter.net LLC	`3.59ms` from Detroit, US
103.204.200.1	AS134983 BDPEER	`0.51ms` from Dhaka, BD
103.180.54.241	AS139611 Bharari.net	`0.82ms` from Dhaka, BD
82.129.31.1	AS174 Cogent Communications, LLC	`1.73ms` from Frankfurt am Main, DE
27.45.233.193	AS17816 China Unicom IP network China169 Guangdong province	`3.21ms` from Guangzhou, CN
120.32.120.1	AS4134 CHINANET-BACKBONE	`16.03ms` from Guangzhou, CN
186.70.16.1	AS14522 SERVICIOS DE TELECOMUNICACIONES SETEL S.A. (XTRIM EC)	`1.49ms` from Guayaquil, EC
61.167.230.225	AS4837 CHINA UNICOM China169 Backbone	`4.05ms` from Harbin, CN
137.118.242.1	AS21891 Buggs Island Telephone Cooperative	`5.88ms` from Herndon, US

Traceroute

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

traceroute -a -n -q1 -f3 -m7 61.100.98.13

traceroute to 61.100.98.13 (61.100.98.13): 7 hops max, 52 byte packets

3 [AS3356] 4.69.219.45 54.674 ms

4 [AS3356] 4.71.141.82 161.147 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Charlotte, US

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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