61.251.66.0/24

AS4766 · Korea Telecom

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Summary

Country	South Korea
Domain	kt.com
ASN	AS4766
Parent Range	61.251.64.0/20
Registry	KRNIC
ID	61.251.66.0-61.251.66.255

WHOIS Details

inetnum:            61.251.66.0 - 61.251.66.255
descr:              KT
network-type:       CUSTOMER
address:            Seocho-Dong Seocho-Gu Seoulteukbyeol-Si
zip-code:           137-070
created:            2025-09-24
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 61.251.66.0/24

Range	ASN	Company	Num of IPs
61.251.64.0/20	AS4766	Korea Telecom	4,096

Nearby Ranges

BGP prefixes that overlap with 61.251.0.0/16

Range	ASN	Company	Num of IPs
61.251.176.0/20	AS202736	ILINKKOREA	4,096
61.251.64.0/20	AS4766	Korea Telecom	4,096
61.251.96.0/20	AS2914	NTT KOREA	4,096
61.251.176.0/20	AS38676	ILINKKOREA	4,096
61.251.65.0/24	AS4766	KT	256
61.251.67.0/24	AS4766	KT	256
61.251.68.0/24	AS4766	KT	256
61.251.69.0/24	AS4766	KT	256
61.251.70.0/24	AS4766	KT	256
61.251.71.0/24	AS4766	KT	256
61.251.72.0/24	AS4766	KT	256
61.251.73.0/24	AS4766	KT	256
61.251.74.0/24	AS4766	KT	256
61.251.75.0/24	AS4766	KT	256
61.251.76.0/24	AS4766	KT	256
61.251.77.0/24	AS4766	KT	256
61.251.162.0/24	AS10160	KDDI KOREA	256
61.251.78.0/24	AS4766	KT	256
61.251.164.0/24	AS10160	Seowoninfor	256
61.251.166.0/24	AS10160	KDDI KOREA	256
61.251.188.0/24	AS4766	ILINKKOREAS	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

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Pingable IPs

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

IP Address	ASN	Details
61.251.66.159	AS4766 Korea Telecom	`1.07ms` 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
40.68.6.8	AS8075 Microsoft Corporation	`0.30ms` from Amsterdam, NL
85.219.42.136	AS6739 VODAFONE ONO, S.A.	`6.32ms` from Barcelona, ES
44.235.188.40	AS16509 Amazon.com, Inc.	`0.17ms` from Boardman, US
81.82.31.248	AS6848 Telenet BV	`5.55ms` from Brussels, BE
31.46.149.136	AS5483 Magyar Telekom Plc.	`6.04ms` from Budapest, HU
123.190.184.120	AS4837 CHINA UNICOM China169 Backbone	`3.96ms` from Liaoyang, CN
109.148.159.56	AS2856 British Telecommunications PLC	`4.04ms` from London, GB
172.167.160.8	AS8075 Microsoft Corporation	`0.20ms` from London, GB
44.218.126.24	AS14618 Amazon.com, Inc.	`0.20ms` from Reston, US
199.45.162.56	AS394646 Eagle Eye Networks, Inc	`12.30ms` from Riyadh, SA
114.31.48.104	AS38690 HyosungITX	`1.09ms` from Seoul, KR
210.59.18.40	AS1659 Taiwan Academic Network (TANet) Information Center	`4.04ms` from Taichung, TW
54.249.189.120	AS16509 Amazon.com, Inc.	`0.19ms` from Tokyo, JP
105.156.20.216	AS36903 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM	`5.54ms` from Casablanca, MA
108.244.64.136	AS7018 AT&T Enterprises, LLC	`2.94ms` from Houston, US
218.23.24.72	AS4134 CHINANET-BACKBONE	`9.93ms` from Huai'an, CN
148.247.44.8	AS3548 Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional	`3.61ms` from Santiago de Queretaro, MX
98.203.178.88	AS7922 Comcast Cable Communications, LLC	`7.99ms` from Seattle, US
14.37.3.8	AS4766 Korea Telecom	`1.32ms` from Seoul, KR
51.84.170.72	AS16509 Amazon.com, Inc.	`2.37ms` from Tel Aviv, IL
34.83.202.88	AS396982 Google LLC	`0.15ms` from The Dalles, US
34.85.120.8	AS396982 Google LLC	`0.15ms` from Tokyo, JP
8.140.210.104	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`1.79ms` from Beijing, CN
151.0.105.136	AS21334 One Hungary Ltd.	`14.85ms` from Budapest, HU
45.234.142.136	AS267382 EXABYTE TECNOLOGIA LTDA. - ME	`9.27ms` from Curitiba, BR

Traceroute

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

traceroute -a -n -q1 61.251.66.217

traceroute to 61.251.66.217 (61.251.66.217): 64 hops max, 52 byte packets

1 [AS15169] 172.253.64.138 1.585 ms

2 *

3 *

4 [AS4766] 112.174.120.70 2.839 ms

5 *

6 *

7 *

8 *

9 [AS4766] 61.251.66.217 2.634 ms

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On December 14th 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.

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