210.99.25.0/24

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:        210.99.24.0 - 210.99.27.255
netname:        KORNET
descr:          Korea Telecom
country:        KR
admin-c:        IM667-AP
tech-c:         IM667-AP
status:         ALLOCATED PORTABLE
mnt-by:         MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
last-modified:  2025-11-03T08:14:17Z
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:        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
last-modified:  2017-03-28T06:37:04Z
source:         APNIC

inetnum:        210.99.24.0 - 210.99.27.255
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.kisa.or.kr.
source:         KRNIC

person:         IP Manager
address:        Gyeonggi-do Bundang-gu, Seongnam-si Buljeong-ro 90
address:        KT Head Office
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 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:        Gyeonggi-do Bundang-gu, Seongnam-si Buljeong-ro 90
address:        KT Head Office
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 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

Nearby Ranges

BGP prefixes that overlap with 210.99.0.0/16

Range	ASN	Company	Num of IPs
210.99.177.0/24	AS4766	Korea Telecom	256

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

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

IP Address	ASN	Details
210.99.25.3	AS17841 NATIONAL INFORMATION RESOURCES SERVICE	`8.80ms` 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
74.33.168.168	AS5650 Frontier Communications of America, Inc.	`12.02ms` from Chicago, US
108.129.63.248	AS16509 Amazon.com, Inc.	`0.27ms` from Dublin, IE
77.96.245.40	AS5089 Virgin Media Limited	`6.60ms` from Erith, GB
182.245.0.216	AS4134 CHINANET-BACKBONE	`0.46ms` from Kunming, CN
116.50.140.152	AS18190 SunValley New Oriental	`0.80ms` from Manila, PH
68.95.51.184	AS7018 AT&T Enterprises, LLC	`11.26ms` from Miami, US
86.253.111.248	AS3215 Orange S.A.	`7.71ms` from Paris, FR
179.137.194.88	AS28573 Claro NXT Telecomunicacoes Ltda	`5.96ms` from Rio de Janeiro, BR
179.213.152.104	AS28573 Claro NXT Telecomunicacoes Ltda	`4.67ms` from Sao Paulo, BR
186.220.233.104	AS28573 Claro NXT Telecomunicacoes Ltda	`4.50ms` from Sao Paulo, BR
27.237.11.168	AS4766 Korea Telecom	`7.11ms` from Seoul, KR
117.90.145.216	AS4134 CHINANET-BACKBONE	`5.17ms` from Huai'an, CN
178.150.136.184	AS13188 CONTENT DELIVERY NETWORK LTD	`7.14ms` from Kharkiv, UA
185.179.15.104	AS202596 G.Network Communications Limited	`1.18ms` from London, GB
100.1.10.152	AS701 Verizon Business	`1.44ms` from New York City, US
109.94.50.120	AS39886 STELOGY INFRASTRUCTURE	`5.21ms` from Paris, FR
177.24.155.72	AS26599 TELEFÔNICA BRASIL S.A	`13.56ms` from Porto Alegre, BR
206.87.84.216	AS16462 University of Victoria	`4.08ms` from Seattle, US
66.183.80.24	AS852 TELUS Communications Inc.	`4.32ms` from Seattle, US
84.40.86.248	AS8866 Vivacom Bulgaria EAD	`0.56ms` from Sofia, BG
35.230.210.248	AS396982 Google LLC	`0.43ms` from Tokyo, JP
78.3.79.168	AS5391 Hrvatski Telekom d.d.	`1.86ms` from Zagreb, HR
193.8.167.120	AS202656 Ivanov Vitaliy Sergeevich	`0.44ms` from Amsterdam, NL
78.92.225.88	AS5483 Magyar Telekom Plc.	`7.01ms` from Budapest, HU
204.13.218.8	AS16524 MetTel	`0.49ms` from Chicago, US

Traceroute

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

traceroute -a -n -q1 210.99.25.35

traceroute to 210.99.25.35 (210.99.25.35): 64 hops max, 52 byte packets

1 [AS31898] 140.91.214.42 0.069 ms

2 [AS9318] 1.255.14.55 0.986 ms

3 [AS9318] 1.255.14.54 2.452 ms

4 [AS9318] 1.255.23.126 4.107 ms

5 *

6 *

7 *

8 *

9 [AS17841] 210.99.25.35 9.273 ms

Measurement taken from

IPinfo ProbeNet in Seoul, KR

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.

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