61.72.230.0/24

AS17841 · NATIONAL INFORMATION RESOURCES SERVICE

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Summary

Country	South Korea
Domain	kt.com
ASN	AS17841
Registry	APNIC
ID	KORNET

WHOIS Details

inetnum:        61.72.0.0 - 61.77.255.255
netname:        KORNET
descr:          Korea Telecom
admin-c:        IM667-AP
tech-c:         IM667-AP
country:        KR
status:         ALLOCATED PORTABLE
mnt-by:         MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
changed:        hostmaster@nic.or.kr 20170203
source:         APNIC

irt:            IRT-KRNIC-KR
address:        Seoul Songpa-gu Jungdae-ro 135
e-mail:         hostmaster@nic.or.kr
abuse-mailbox:  hostmaster@nic.or.kr
admin-c:        IM574-AP
tech-c:         IM574-AP
auth:           # Filtered
mnt-by:         MNT-KRNIC-AP
changed:        hostmaster@nic.or.kr 20150513
source:         APNIC

person:         IP Manager
address:        Gyeonggi-do Bundang-gu, Seongnam-si Buljeong-ro 90
country:        KR
phone:          +82-2-500-6630
e-mail:         kornet_ip@kt.com
nic-hdl:        IM667-AP
mnt-by:         MNT-KRNIC-AP
changed:        hostmaster@nic.or.kr 20170328
source:         APNIC

inetnum:        61.72.0.0 - 61.77.255.255
netname:        KORNET-KR
descr:          Korea Telecom
country:        KR
admin-c:        IA9-KR
tech-c:         IM9-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.krnic.net.
changed:        hostmaster@nic.or.kr
source:         KRNIC

person:         IP Manager
address:        Gyeonggi-do Bundang-gu, Seongnam-si Buljeong-ro 90
address:        
country:        KR
phone:          +82-2-500-6630
e-mail:         kornet_ip@kt.com
nic-hdl:        IA9-KR
mnt-by:         MNT-KRNIC-AP
changed:        hostmaster@nic.or.kr
source:         KRNIC

person:         IP Manager
address:        Gyeonggi-do Bundang-gu, Seongnam-si Buljeong-ro 90
address:        
country:        KR
phone:          +82-2-500-6630
e-mail:         kornet_ip@kt.com
nic-hdl:        IM9-KR
mnt-by:         MNT-KRNIC-AP
changed:        hostmaster@nic.or.kr
source:         KRNIC

Nearby Ranges

BGP prefixes that overlap with 61.72.0.0/16

No nearby ranges found.

Hosted domains

There are no domains currently hosted on this ASN.

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

No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

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
174.105.159.104	AS10796 Charter Communications Inc	`8.16ms` from Columbus, US
66.241.106.104	AS14929 Vitelity, LLC	`1.10ms` from Denver, US
46.201.246.24	AS6849 JSC "Ukrtelecom"	`0.48ms` from Kyiv, UA
76.167.57.152	AS20001 Charter Communications Inc	`10.58ms` from Los Angeles, US
5.180.59.8	AS56987 ABACLOUDA SAS	`0.33ms` from Paris, FR
159.121.119.8	AS1798 State of Oregon	`2.18ms` from Portland, US
154.20.22.56	AS852 TELUS Communications Inc.	`4.88ms` from Seattle, US
220.134.110.168	AS3462 Data Communication Business Group	`2.81ms` from Taichung, TW
178.216.107.56	AS197049 INTERNET SERWIS WOJCIECH BANDUROWSKI	`6.84ms` from Warsaw, PL
79.189.122.72	AS5617 Orange Polska Spolka Akcyjna	`3.28ms` from Warsaw, PL
73.33.110.56	AS7922 Comcast Cable Communications, LLC	`9.23ms` from Ashburn, US
83.45.154.200	AS3352 TELEFONICA DE ESPANA S.A.U.	`2.79ms` from Barcelona, ES
80.158.61.88	AS6878 T-Systems International GmbH	`2.49ms` from Berlin, DE
181.56.123.72	AS10620 Telmex Colombia S.A.	`11.72ms` from Bogota, CO
20.161.164.72	AS8075 Microsoft Corporation	`0.30ms` from Boydton, US
206.74.240.72	AS2711 Spirit Communications	`3.03ms` from Charlotte, US
3.146.108.120	AS16509 Amazon.com, Inc.	`0.16ms` from Columbus, US
134.19.60.184	AS57353 vitroconnect GmbH	`0.95ms` from Duesseldorf, DE
217.81.52.72	AS3320 Deutsche Telekom AG	`1.61ms` from Hamburg, DE
31.120.76.200	AS2856 British Telecommunications PLC	`2.50ms` from London, GB
124.105.6.72	AS9299 Philippine Long Distance Telephone Company	`1.27ms` from Manila, PH
67.240.177.248	AS11351 Charter Communications Inc	`19.80ms` from New York City, US
100.29.177.216	AS14618 Amazon.com, Inc.	`0.23ms` from Reston, US
34.193.15.40	AS14618 Amazon.com, Inc.	`0.21ms` from Reston, US
38.95.68.136	AS174 Cogent Communications, LLC	`1.42ms` from San Diego, US

Traceroute

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

traceroute -a -n -q1 -f2 -m6 61.72.230.235

traceroute to 61.72.230.235 (61.72.230.235): 6 hops max, 52 byte packets

2 [AS20278] 64.44.164.129 0.137 ms

3 [] 206.123.7.25 0.557 ms

4 *

5 *

6 *

Measurement taken from

IPinfo ProbeNet in Jacksonville, US

On October 17th 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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