1. All IP Ranges
  2. 221.0.0.0/8
  3. 221.157.0.0/16
  4. AS4766  | 221.157.116.0/24

221.157.116.0/24

AS4766  ·  Korea Telecom

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Summary

Country South Korea
Domain kt.com
ASN AS4766
Parent Range 221.144.0.0/12
Registry APNIC
ID KORNET-KR

WHOIS Details

inetnum:        221.144.0.0 - 221.159.255.255
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:  2025-11-03T08:15:09Z
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:        221.144.0.0 - 221.159.255.255
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 221.157.116.0/24

Range ASN Company Num of IPs
221.144.0.0/12 AS9856 Korea Telecom 1,048,576
221.144.0.0/12 AS10185 Korea Telecom 1,048,576
221.144.0.0/12 AS152214 Korea Telecom 1,048,576
221.144.0.0/12 AS17576 Korea Telecom 1,048,576
221.144.0.0/12 AS17851 Korea Telecom 1,048,576
221.144.0.0/12 AS38405 Korea Telecom 1,048,576
221.144.0.0/12 AS38697 Korea Telecom 1,048,576
221.144.0.0/12 AS45360 Korea Telecom 1,048,576
221.144.0.0/12 AS45400 Korea Telecom 1,048,576
221.144.0.0/12 AS4766 Korea Telecom 1,048,576
221.144.0.0/12 AS10184 Korea Telecom 1,048,576
221.144.0.0/12 AS55622 Korea Telecom 1,048,576
221.144.0.0/12 AS9526 Korea Telecom 1,048,576
221.144.0.0/12 AS9850 Korea Telecom 1,048,576

Nearby Ranges

BGP prefixes that overlap with 221.157.0.0/16

Range ASN Company Num of IPs
221.144.0.0/12 AS10184 Korea Telecom 1,048,576
221.144.0.0/12 AS10185 Korea Telecom 1,048,576
221.144.0.0/12 AS152214 Korea Telecom 1,048,576
221.144.0.0/12 AS17576 Korea Telecom 1,048,576
221.144.0.0/12 AS17851 Korea Telecom 1,048,576
221.144.0.0/12 AS38405 Korea Telecom 1,048,576
221.144.0.0/12 AS38697 Korea Telecom 1,048,576
221.144.0.0/12 AS45360 Korea Telecom 1,048,576
221.144.0.0/12 AS45400 Korea Telecom 1,048,576
221.144.0.0/12 AS4766 Korea Telecom 1,048,576
221.144.0.0/12 AS55622 Korea Telecom 1,048,576
221.144.0.0/12 AS9526 Korea Telecom 1,048,576
221.144.0.0/12 AS9850 Korea Telecom 1,048,576
221.144.0.0/12 AS9856 Korea Telecom 1,048,576

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
207.135.205.56 AS400072 THUNDERBOX INC 2.31ms from Ashburn, US
76.131.234.72 AS7922 Comcast Cable Communications, LLC 5.36ms from Denver, US
18.194.116.40 AS16509 Amazon.com, Inc. 0.14ms from Frankfurt am Main, DE
61.142.28.152 AS4134 CHINANET-BACKBONE 3.80ms from Guangzhou, CN
95.93.90.200 AS2860 NOS COMUNICACOES, S.A. 10.20ms from Lisbon, PT
68.115.102.168 AS20115 Charter Communications LLC 12.60ms from Minneapolis, US
218.71.29.40 AS4134 CHINANET-BACKBONE 10.10ms from Ningbo, CN
217.128.230.248 AS3215 Orange S.A. 2.62ms from Paris, FR
40.138.82.8 AS7029 Windstream Communications LLC 0.28ms from San Jose, US
189.168.155.56 AS8151 UNINET 11.15ms from Santiago de Queretaro, MX
64.18.8.88 AS394699 ZenFi Networks LLC 0.55ms from Secaucus, US
121.172.149.136 AS4766 Korea Telecom 1.72ms from Seoul, KR
79.181.162.56 AS6810 "Bezeq"- THE ISRAEL TELECOMMUNICATION CORP. LTD. 0.22ms from Tel Aviv, IL
197.2.238.56 AS37705 TOPNET 2.26ms from Tunis, TN
95.110.113.200 AS28812 PJSC "Bashinformsvyaz" 9.08ms from Yekaterinburg, RU
93.139.89.232 AS5391 Hrvatski Telekom d.d. 19.54ms from Zagreb, HR
202.49.135.152 AS24324 Kordia Limited 0.41ms from Auckland, NZ
196.70.124.8 AS36903 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM 8.25ms from Casablanca, MA
75.244.45.104 AS6167 Verizon Business 9.32ms from Chicago, US
27.42.219.200 AS17816 China Unicom IP network China169 Guangdong province 5.71ms from Guangzhou, CN
176.56.170.56 AS41095 IPTP LTD 1.46ms from Larnaca, CY
218.61.89.40 AS4837 CHINA UNICOM China169 Backbone 8.41ms from Liaoyang, CN
2.216.169.136 AS5607 Sky UK Limited 1.75ms from London, GB
151.30.148.24 AS1267 WIND TRE S.P.A. 2.34ms from Milan, IT
69.116.13.200 AS6128 Cablevision Systems Corp. 8.47ms from Piscataway, US

Traceroute

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

$
traceroute -a -n -q1 -f3 -m16 221.157.116.222
traceroute to 221.157.116.222 (221.157.116.222): 16 hops max, 52 byte packets
5 [AS55805] 27.123.212.49 140.403 ms
6 *
7 *
8 [AS4766] 112.174.80.253 220.732 ms
9 *
10 *
11 *
12 *
13 [AS4766] 121.150.184.10 221.466 ms
14 *
15 *
16 *
Measurement taken from IPinfo ProbeNet in Ulan Bator, MN
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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