211.253.238.0/23

AS9955 · Baekseok University

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Summary

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

WHOIS Details

inetnum:        211.253.224.0 - 211.253.251.255
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
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

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

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
51.81.30.23	AS16276 OVH SAS	`1.22ms` from Ashburn, US
97.140.74.199	AS6167 Verizon Business	`14.60ms` from Atlanta, US
138.117.41.119	AS272812 FASTNET COMUNICACIONES ISP SAS	`6.58ms` from Bogota, CO
68.38.51.23	AS7922 Comcast Cable Communications, LLC	`12.35ms` from Chicago, US
188.176.51.135	AS3292 TDC Holding A/S	`7.46ms` from Copenhagen, DK
95.93.92.215	AS2860 NOS COMUNICACOES, S.A.	`10.76ms` from Lisbon, PT
86.176.114.39	AS2856 British Telecommunications PLC	`1.83ms` from London, GB
89.88.135.183	AS5410 Bouygues Telecom SA	`7.08ms` from Marseille, FR
47.192.86.55	AS5650 Frontier Communications of America, Inc.	`12.58ms` from Miami, US
177.197.102.199	AS26599 TELEFÔNICA BRASIL S.A	`3.58ms` from Sao Paulo, BR
61.110.253.231	AS38107 CDNetworks	`1.15ms` from Seoul, KR
1.161.139.39	AS3462 Data Communication Business Group	`2.44ms` from Taipei, TW
223.82.238.87	AS9808 China Mobile Communications Group Co., Ltd.	`11.93ms` from Wuhan, CN
77.174.215.199	AS1136 KPN B.V.	`0.84ms` from Amsterdam, NL
23.13.180.119	AS16625 Akamai Technologies, Inc.	`0.16ms` from Ashburn, US
203.223.18.151	AS136167 CHINA TELECOM (MACAU) COMPANY LIMITED	`3.42ms` from Hong Kong, HK
39.32.217.7	AS17557 Pakistan Telecommunication Company Limited	`10.63ms` from Islamabad, PK
51.94.61.119	AS16509 Amazon.com, Inc.	`6.09ms` from Madrid, ES
15.185.45.215	AS16509 Amazon.com, Inc.	`0.35ms` from Manama, BH
221.224.36.119	AS4134 CHINANET-BACKBONE	`4.02ms` from Nanjing, CN
219.115.106.55	AS9617 JCOM Co., Ltd.	`11.32ms` from Osaka, JP
80.188.23.199	AS5610 O2 Czech Republic, a.s.	`0.84ms` from Prague, CZ
60.215.42.183	AS4837 CHINA UNICOM China169 Backbone	`8.00ms` from Qingdao, CN
34.201.62.183	AS14618 Amazon.com, Inc.	`0.45ms` from Reston, US
36.225.73.71	AS3462 Data Communication Business Group	`0.94ms` from Taipei, TW

Traceroute

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

traceroute -a -n -q1 -m7 211.253.239.238

traceroute to 211.253.239.238 (211.253.239.238): 7 hops max, 52 byte packets

1 [AS63023] 167.17.64.1 0.248 ms

2 *

3 *

4 [AS28917] 62.140.255.110 10.016 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Paris, FR

On September 4th 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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