211.217.18.0/24

AS4961 · Daewoo Information Systems

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Summary

Country	South Korea
Domain	kt.com
ASN	AS4961
Parent Range	211.216.0.0/13
Registry	APNIC
ID	KORNET

WHOIS Details

inetnum:        211.216.0.0 - 211.223.255.255
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:  2025-11-03T08:14:58Z
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:        211.216.0.0 - 211.223.255.255
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

Overlapping Ranges

BGP prefixes that contain 211.217.18.0/24

Range	ASN	Company	Num of IPs
211.216.0.0/13	AS152214	Korea Telecom	524,288
211.216.0.0/13	AS17859	Korea Telecom	524,288
211.216.0.0/13	AS38089	Korea Telecom	524,288
211.216.0.0/13	AS38404	Korea Telecom	524,288
211.216.0.0/13	AS9318	Korea Telecom	524,288
211.216.0.0/13	AS4766	Korea Telecom	524,288
211.216.0.0/13	AS4961	Korea Telecom	524,288

Nearby Ranges

BGP prefixes that overlap with 211.217.0.0/16

Range	ASN	Company	Num of IPs
211.216.0.0/13	AS4961	Korea Telecom	524,288
211.216.0.0/13	AS9318	Korea Telecom	524,288
211.216.0.0/13	AS17859	Korea Telecom	524,288
211.216.0.0/13	AS38089	Korea Telecom	524,288
211.216.0.0/13	AS38404	Korea Telecom	524,288
211.216.0.0/13	AS152214	Korea Telecom	524,288
211.216.0.0/13	AS4766	Korea Telecom	524,288
211.217.201.0/24	AS9967	Korea Telecom	256
211.217.200.0/24	AS45362	Teuseutonjasanunyong(ju)	256
211.217.195.0/24	AS131843	Hanguktujasintakunyong	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

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
34.230.38.168	AS14618 Amazon.com, Inc.	`0.43ms` from Ashburn, US
75.222.149.184	AS6167 Verizon Business	`19.89ms` from Chicago, US
52.123.243.152	AS8075 Microsoft Corporation	`0.14ms` from Johannesburg, ZA
198.182.242.248	AS15116 Pittsburg State University	`4.83ms` from Kansas City, US
176.107.63.24	AS49588 SDS-Vostok Ltd.	`10.27ms` from Kyiv, UA
94.1.174.136	AS5607 Sky UK Limited	`7.84ms` from London, GB
112.227.131.120	AS4837 CHINA UNICOM China169 Backbone	`5.24ms` from Qingdao, CN
87.17.25.216	AS3269 Telecom Italia S.p.A.	`5.15ms` from Rome, IT
43.200.238.104	AS16509 Amazon.com, Inc.	`0.20ms` from Seoul, KR
60.25.145.40	AS4837 CHINA UNICOM China169 Backbone	`6.71ms` from Beijing, CN
99.158.232.56	AS7018 AT&T Enterprises, LLC	`9.95ms` from Columbus, US
207.57.231.120	AS54801 Zillion Network Inc.	`1.54ms` from Hong Kong, HK
37.34.208.56	AS42961 Mobile Telecommunications Company K.S.C.P.	`5.75ms` from Kuwait City, KW
5.134.119.152	AS59432 GINERNET S.L.	`0.19ms` from Madrid, ES
177.160.177.216	AS26599 TELEFÔNICA BRASIL S.A	`2.05ms` from Osasco, BR
105.158.141.56	AS36903 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM	`9.23ms` from Rabat, MA
73.92.87.168	AS7922 Comcast Cable Communications, LLC	`8.33ms` from San Jose, US
125.7.108.120	AS17477 Macquarie Technology Operations Pty Limited	`0.93ms` from Sydney, AU
126.147.60.152	AS17676 SoftBank Corp.	`2.79ms` from Tokyo, JP
197.203.51.104	AS36947 Telecom Algeria	`9.50ms` from Valencia, ES
73.82.225.200	AS7922 Comcast Cable Communications, LLC	`5.22ms` from Atlanta, US
209.55.101.40	AS16857 Central Texas Telecommunications	`7.60ms` from Dallas, US
20.40.167.8	AS8075 Microsoft Corporation	`0.57ms` from Melbourne, AU
91.80.191.88	AS30722 Fastweb SpA	`18.75ms` from Milan, IT
123.48.254.200	AS18126 Chubu Telecommunications Company, Inc.	`4.11ms` from Osaka, JP

Traceroute

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

traceroute -a -n -q1 -m18 211.217.18.15

traceroute to 211.217.18.15 (211.217.18.15): 18 hops max, 52 byte packets

1 [AS17378] 65.99.238.194 1.831 ms

2 [AS17378] 173.237.168.23 1.121 ms

3 [AS17378] 74.114.180.72 1.025 ms

4 [AS3356] 4.16.22.29 1.769 ms

5 [AS3356] 4.69.219.45 41.232 ms

6 [AS3356] 4.68.111.74 54.961 ms

7 [AS3786] 1.208.112.153 46.203 ms

8 [AS3786] 1.208.148.69 181.754 ms

9 *

10 *

11 [AS3786] 1.208.178.46 173.877 ms

12 *

13 [AS3786] 115.90.21.122 164.089 ms

14 [AS4961] 152.149.237.6 164.968 ms

15 [AS4961] 152.149.237.54 172.918 ms

16 *

17 *

18 *

Measurement taken from

IPinfo ProbeNet in Tulsa, US

On March 20th 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.

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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