211.253.236.0/23

AS9955  ·  Baekseok University

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Summary

Country South Korea
Domain kt.com
ASN AS9955
Registry APNIC
ID KORNET-KR

WHOIS Details

inetnum:        211.253.224.0 - 211.253.239.255
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:  2025-11-03T08:15:07Z
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:        211.253.224.0 - 211.253.239.255
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 211.253.0.0/16

Range ASN Company Num of IPs
211.253.176.0/20 AS10176 Korea Telecom 4,096
211.253.72.0/21 AS9531 Korea Telecom 2,048
211.253.68.0/22 AS9531 Gwangjugwangyeoksigyoyukcheong 1,024
211.253.61.0/24 AS17574 KT 256
211.253.61.0/24 AS17574 KT 256
211.253.60.0/24 AS17841 KT 256
211.253.60.0/24 AS17841 KT 256
211.253.61.0/24 AS17841 KT 256
211.253.61.0/24 AS17841 KT 256
211.253.62.0/24 AS17841 Korea Telecom 256
211.253.65.0/24 AS45400 Korea Telecom 256
211.253.67.0/24 AS45400 Korea Telecom 256
211.253.56.0/24 AS4766 Korea Telecom 256
211.253.59.0/24 AS4766 Baekseokyesuldaehakgyo 256
211.253.60.0/24 AS17574 KT 256
211.253.60.0/24 AS17574 KT 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

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
50.43.174.231 AS5650 Frontier Communications of America, Inc. 11.14ms from Ashburn, US
24.182.89.103 AS20115 Charter Communications LLC 6.00ms from Atlanta, US
207.7.82.167 AS63410 PrivateSystems Networks 0.37ms from Atlanta, US
38.56.192.247 AS269813 COOP DE ELECTRICIDAD OBRAS Y SERVICIOS PUB LTDA DE CORONEL MOLDES 9.77ms from Buenos Aires, AR
208.97.61.87 AS30247 Voonami, Inc. 0.69ms from Salt Lake City, US
39.25.132.7 AS4766 Korea Telecom 2.02ms from Seoul, KR
222.117.93.151 AS4766 Korea Telecom 1.58ms from Seoul, KR
218.212.183.55 AS55430 Starhub Ltd 2.24ms from Singapore, SG
4.194.3.7 AS8075 Microsoft Corporation 0.58ms from Singapore, SG
213.89.132.119 AS1257 Tele2 Sverige AB 5.00ms from Stockholm, SE
73.174.14.7 AS7922 Comcast Cable Communications, LLC 13.05ms from Ashburn, US
186.28.142.87 AS19429 ETB - Colombia 1.06ms from Bogota, CO
135.232.59.7 AS8075 Microsoft Corporation 0.19ms from Boydton, US
76.185.199.103 AS11427 Charter Communications Inc 9.52ms from Dallas, US
113.170.144.231 AS45899 VNPT Corp 4.07ms from Ho Chi Minh City, VN
58.221.240.199 AS4134 CHINANET-BACKBONE 6.40ms from Huai'an, CN
46.63.50.119 AS51784 "X-City" Ltd. 0.74ms from Khmelnytskyi, UA
194.63.253.183 AS12996 Domeneshop AS 0.35ms from Oslo, NO
54.81.216.247 AS14618 Amazon.com, Inc. 0.21ms from Reston, US
178.68.10.167 AS12389 PJSC Rostelecom 10.06ms from Stockholm, SE
73.253.219.183 AS7922 Comcast Cable Communications, LLC 9.10ms from Boston, US
42.193.8.55 AS45090 Shenzhen Tencent Computer Systems Company Limited 0.78ms from Chengdu, CN
84.171.81.87 AS3320 Deutsche Telekom AG 5.51ms from Frankfurt am Main, DE
39.135.136.23 AS132525 HeiLongJiang Mobile Communication Company Limited 7.23ms from Harbin, CN
95.70.80.103 AS12389 PJSC Rostelecom 0.95ms from Khabarovsk, RU

Traceroute

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

$
traceroute -a -n -q1 -m5 211.253.237.187
traceroute to 211.253.237.187 (211.253.237.187): 5 hops max, 52 byte packets
2 [AS8932] 185.48.242.92 0.204 ms
3 *
4 *
5 *
Measurement taken from IPinfo ProbeNet in Yerevan, AM
On

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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