1. All IP Ranges
  2. 211.0.0.0/8
  3. 211.253.0.0/16
  4. AS4766  | 211.253.48.0/21

211.253.48.0/21

AS4766  ·  Korea Telecom

Need more data or want to access it via API or data downloads? Sign up to get free access

Sign up for free ›

Summary

Country South Korea
Domain kt.com
ASN AS4766
Registry APNIC
ID KORNET-KR

WHOIS Details

inetnum:        211.253.48.0 - 211.253.63.255
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:  2025-11-03T08:15:05Z
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:        211.253.48.0 - 211.253.63.255
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 2 domain names hosted across 1 IP address on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
211.253.48.218 seoil.kr 2

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

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

IP Address ASN Details
211.253.54.20 AS4766 Korea Telecom 1.31ms from Seoul, KR
211.253.55.209 AS4766 Korea Telecom 1.23ms from Seoul, KR
211.253.48.198 AS4766 Korea Telecom 1.24ms from Seoul, KR
211.253.50.122 AS4766 Korea Telecom 1.54ms 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
44.209.238.37 AS14618 Amazon.com, Inc. 0.53ms from Ashburn, US
40.117.35.181 AS8075 Microsoft Corporation 0.47ms from Ashburn, US
121.98.233.181 AS9790 Two Degrees Networks Limited 5.20ms from Christchurch, NZ
72.49.213.149 AS6181 Cincinnati Bell Telephone Company LLC 1.71ms from Cincinnati, US
87.179.65.117 AS3320 Deutsche Telekom AG 2.31ms from Duesseldorf, DE
36.97.151.69 AS4134 CHINANET-BACKBONE 13.15ms from Harbin, CN
206.119.0.213 AS140224 Nebula Global LLC 0.79ms from Hong Kong, HK
36.50.112.245 AS63859 PT. Eka Mas Republik 1.82ms from Jakarta, ID
152.89.62.85 AS30860 Virtual Systems LLC 0.34ms from Kyiv, UA
18.133.192.165 AS16509 Amazon.com, Inc. 0.16ms from London, GB
47.146.148.197 AS5650 Frontier Communications of America, Inc. 3.16ms from Los Angeles, US
89.83.53.213 AS5410 Bouygues Telecom SA 7.53ms from Marseille, FR
178.20.235.165 AS49063 Data Storage Center JSC 0.92ms from Moscow, RU
182.87.41.53 AS4134 CHINANET-BACKBONE 4.27ms from Nanchang, CN
27.214.23.69 AS4837 CHINA UNICOM China169 Backbone 7.63ms from Qingdao, CN
209.245.121.53 AS3356 Level 3 Parent, LLC 0.95ms from San Diego, US
200.178.222.53 AS4230 CLARO S.A. 5.47ms from Sao Paulo, BR
73.178.169.53 AS7922 Comcast Cable Communications, LLC 7.77ms from Secaucus, US
180.169.199.85 AS4812 China Telecom (Group) 3.34ms from Shanghai, CN
195.198.165.5 AS3301 Telia Company AB 0.83ms from Stockholm, SE
153.224.161.165 AS4713 NTT DOCOMO BUSINESS,Inc. 16.10ms from Tokyo, JP
41.96.31.245 AS36947 Telecom Algeria 9.23ms from Valencia, ES
35.169.184.245 AS14618 Amazon.com, Inc. 0.47ms from Ashburn, US
2.84.218.229 AS6799 Ote SA (Hellenic Telecommunications Organisation) 0.94ms from Athens, GR
150.125.160.133 AS668 United States Department of Defense (DoD) 0.62ms from Atlanta, US

Traceroute

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

$
traceroute -a -n -q1 211.253.54.20
traceroute to 211.253.54.20 (211.253.54.20): 64 hops max, 52 byte packets
3 *
4 *
5 [AS4766] 112.174.70.78 1.933 ms
6 *
7 [AS4766] 221.146.2.30 2.497 ms
9 *
10 [AS4766] 211.253.54.20 2.287 ms
Measurement taken from IPinfo ProbeNet in Seoul, KR
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.

An API built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

Get Started for Free Contact Sales
IPinfo for all your IP geolocation needs

Our IP tools

Explore all tools
What is my IP

What is my IP

Test our data accuracy by viewing insights from your IP address.

See your IP address
Map IPs

Map IPs

Paste up to 500,000 IPs to see where they're located on a map.

Try Map IPs
Summarize IPs

Summarize IPs

Use our data visualization tool to create a visual overview of multiple IPs.

Try Summarize IPs