221.145.178.0/24

AS45400 · Korea Telecom

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Summary

Country	South Korea
Domain	kt.com
ASN	AS45400
Parent Range	221.144.0.0/12
Registry	KRNIC
ID	221.145.178.0-221.145.178.255

WHOIS Details

inetnum:            221.145.178.0 - 221.145.178.255
descr:              Korea Telecom
network-type:       CUSTOMER
address:            90 Buljeongro Bundang-Gu Seongnam-Si Gyeonggi-Do
zip-code:           13606
created:            2025-10-08
admin:              GENERATED-KRNIC-IP-MANAGER-KORNETIP
country:            KR
source:             KRNIC

nic-hdl:            GENERATED-KRNIC-IP-MANAGER-KORNETIP
person:             IP Manager
name:               IP Manager
phone:              +82-2-500-6630
e-mail:             [email protected]
source:             KRNIC

Overlapping Ranges

BGP prefixes that contain 221.145.178.0/24

Range	ASN	Company	Num of IPs
221.144.0.0/12	AS152214	Korea Telecom	1,048,576
221.144.0.0/12	AS4766	Korea Telecom	1,048,576
221.144.0.0/12	AS9856	Korea Telecom	1,048,576

Nearby Ranges

BGP prefixes that overlap with 221.145.0.0/16

Range	ASN	Company	Num of IPs
221.144.0.0/12	AS152214	Korea Telecom	1,048,576
221.144.0.0/12	AS4766	Korea Telecom	1,048,576
221.144.0.0/12	AS9856	Korea Telecom	1,048,576
221.145.224.0/24	AS4766	(hak)toldaehakgyodaejeonseongmobyeongwon	256

Hosted domains

There is 1 domain name hosted across 1 IP address on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
221.145.178.240	nhc.go.kr	1

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

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

IP Address	ASN	Details
221.145.178.1	AS45400 Korea Telecom	`5.18ms` 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
52.157.72.232	AS8075 Microsoft Corporation	`0.27ms` from Amsterdam, NL
75.210.114.104	AS6167 Verizon Business	`10.64ms` from Chicago, US
89.168.120.56	AS31898 Oracle Corporation	`0.28ms` from Frankfurt am Main, DE
115.129.191.168	AS7545 TPG Telecom Limited	`1.38ms` from Melbourne, AU
46.141.119.72	AS49524 Wolnet SRL	`8.22ms` from Milan, IT
24.152.149.248	AS10242 US Internet Corp	`0.70ms` from Minneapolis, US
85.91.101.56	AS8641 BACKBONE AS of Nauka-Svyaz	`3.00ms` from Moscow, RU
47.18.211.232	AS6128 Cablevision Systems Corp.	`2.19ms` from New York City, US
168.195.161.24	AS53078 Acesse Comunicação Ltda	`5.68ms` from Rio de Janeiro, BR
45.236.163.104	AS268241 DIGITUS INFORMATICA LTDA - ME	`15.26ms` from Sao Paulo, BR
153.171.9.40	AS4713 NTT DOCOMO BUSINESS,Inc.	`7.07ms` from Tokyo, JP
204.186.200.88	AS3737 PenTeleData Inc.	`5.71ms` from Allentown, US
193.245.93.232	AS15953 KBC GLOBAL SERVICES NV	`4.93ms` from Budapest, HU
96.40.34.168	AS20115 Charter Communications LLC	`6.88ms` from Dallas, US
108.130.93.232	AS16509 Amazon.com, Inc.	`0.40ms` from Dublin, IE
147.148.167.216	AS2856 British Telecommunications PLC	`6.63ms` from Erith, GB
79.220.136.248	AS3320 Deutsche Telekom AG	`3.88ms` from Frankfurt am Main, DE
47.89.43.184	AS45102 Alibaba (US) Technology Co., Ltd.	`0.65ms` from Hong Kong, HK
174.48.6.200	AS7922 Comcast Cable Communications, LLC	`3.99ms` from Miami, US
217.251.29.216	AS3320 Deutsche Telekom AG	`5.95ms` from Nuernberg, DE
88.160.165.40	AS12322 Free SAS	`10.23ms` from Paris, FR
54.156.155.88	AS14618 Amazon.com, Inc.	`0.19ms` from Reston, US
171.117.122.168	AS4837 CHINA UNICOM China169 Backbone	`2.93ms` from Taiyuan, CN
69.159.58.72	AS577 Bell Canada	`4.74ms` from Toronto, CA
213.162.153.40	AS9136 Wobcom GmbH	`3.98ms` from Berlin, DE

Traceroute

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

traceroute -a -n -q1 -f3 221.145.178.1

traceroute to 221.145.178.1 (221.145.178.1): 64 hops max, 52 byte packets

3 [] 80.81.193.16 1.138 ms

4 *

5 *

6 *

7 [AS3786] 203.233.86.226 243.17 ms

8 *

9 *

10 *

11 [] 211.255.110.66 264.362 ms

12 [] 211.255.110.74 240.71 ms

13 [] 211.255.120.142 242.623 ms

14 [AS45400] 221.145.178.1 252.323 ms

Measurement taken from

IPinfo ProbeNet in Frankfurt am Main, DE

On December 6th 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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