1. All IP Ranges
  2. 211.0.0.0/8
  3. 211.253.0.0/16
  4. AS45400  | 211.253.149.0/24

211.253.149.0/24

AS45400  ·  Korea Telecom

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Summary

Country South Korea
Domain kt.com
ASN AS45400
Registry APNIC
ID KORNET

WHOIS Details

inetnum:        211.253.144.0 - 211.253.151.255
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:  2025-11-03T08:15:06Z
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:        211.253.144.0 - 211.253.151.255
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

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Useful for Cybersecurity
Read more

Pingable IPs

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

IP Address ASN Details
211.253.149.9 AS45400 Korea Telecom 4.21ms 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
207.172.138.120 AS6079 RCN 8.84ms from Ashburn, US
40.138.190.104 AS7029 Windstream Communications LLC 3.43ms from Atlanta, US
119.53.153.72 AS4837 CHINA UNICOM China169 Backbone 1.57ms from Changchun, CN
65.25.210.152 AS10796 Charter Communications Inc 10.08ms from Chicago, US
79.144.55.24 AS3352 TELEFONICA DE ESPANA S.A.U. 11.03ms from Madrid, ES
79.201.33.104 AS3320 Deutsche Telekom AG 1.82ms from Nuernberg, DE
106.249.148.104 AS3786 LG DACOM Corporation 1.85ms from Seoul, KR
175.201.22.184 AS4766 Korea Telecom 5.66ms from Seoul, KR
61.198.19.184 AS17689 Hokuden Information Technology,Inc. 13.53ms from Tokyo, JP
161.29.152.120 AS9790 Two Degrees Networks Limited 9.57ms from Auckland, NZ
34.210.169.184 AS16509 Amazon.com, Inc. 0.17ms from Boardman, US
35.167.133.232 AS16509 Amazon.com, Inc. 0.23ms from Boardman, US
96.109.59.88 AS7922 Comcast Cable Communications, LLC 0.72ms from Boston, US
94.196.187.120 AS206067 Hutchison 3G UK Limited 14.23ms from Dublin, IE
62.155.218.72 AS3320 Deutsche Telekom AG 8.42ms from Frankfurt am Main, DE
149.81.225.152 AS36351 IBM Cloud 0.55ms from Frankfurt am Main, DE
90.199.40.8 AS5607 Sky UK Limited 3.59ms from London, GB
197.136.144.40 AS36914 Kenya Education Network 0.94ms from Nairobi, KE
176.148.7.216 AS5410 Bouygues Telecom SA 3.34ms from Paris, FR
162.240.92.168 AS46606 Unified Layer 1.94ms from Salt Lake City, US
15.220.176.136 AS16509 Amazon.com, Inc. 0.53ms from Santiago de Queretaro, MX
115.140.103.104 AS17858 LG POWERCOMM 1.85ms from Seoul, KR
84.144.109.120 AS3320 Deutsche Telekom AG 4.21ms from Frankfurt am Main, DE
51.49.86.56 AS16509 Amazon.com, Inc. 5.59ms from Madrid, ES
185.202.109.216 AS25515 PJSC Rostelecom 1.14ms from Moscow, RU

Traceroute

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

$
traceroute -a -n -q1 211.253.149.129
traceroute to 211.253.149.129 (211.253.149.129): 64 hops max, 52 byte packets
2 [AS199524] 92.223.1.73 0.112 ms
3 *
4 *
5 [AS4766] 112.190.76.81 1.003 ms
6 *
7 [AS4766] 112.174.9.34 1.333 ms
9 *
10 *
11 *
12 [] 211.255.110.70 4.184 ms
13 [] 211.255.110.82 4.416 ms
14 [] 211.255.120.142 4.904 ms
15 *
16 [AS45400] 211.253.149.129 24.954 ms
Measurement taken from IPinfo ProbeNet in Incheon, 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.

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