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:              +82-2-500-6631
e-mail:             kornet_ip@kt.com
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

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Pingable IPs

71 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
176.205.202.24	AS5384 Emirates Internet	`7.93ms` from Al Fujairah City, AE
81.245.61.200	AS5432 Proximus NV	`1.15ms` from Brussels, BE
81.164.133.184	AS6848 Telenet BV	`7.49ms` from Brussels, BE
222.209.186.40	AS4134 CHINANET-BACKBONE	`3.38ms` from Chengdu, CN
172.94.98.8	AS137409 GSL Networks Pty LTD	`0.17ms` from Frankfurt am Main, DE
86.163.14.104	AS2856 British Telecommunications PLC	`5.61ms` from London, GB
82.34.143.88	AS5089 Virgin Media Limited	`9.40ms` from London, GB
68.52.31.136	AS7922 Comcast Cable Communications, LLC	`5.39ms` from Murfreesboro, US
63.131.143.200	AS14492 DataPipe, Inc.	`2.08ms` from New York City, US
126.59.159.88	AS17676 SoftBank Corp.	`3.46ms` from Osaka, JP
86.244.20.152	AS3215 Orange S.A.	`6.61ms` from Paris, FR
133.218.39.72	AS2497 Internet Initiative Japan Inc.	`3.69ms` from Tokyo, JP
123.5.83.136	AS4837 CHINA UNICOM China169 Backbone	`3.23ms` from Zhengzhou, CN
94.198.125.200	AS49567 Aptus Ltd	`2.56ms` from Dublin, IE
108.244.64.136	AS7018 AT&T Enterprises, LLC	`2.80ms` from Houston, US
182.231.173.216	AS17858 LG POWERCOMM	`2.00ms` from Incheon, KR
165.23.229.40	AS11232 Midcontinent Communications	`4.75ms` from Kansas City, US
178.170.82.72	AS21409 Ikoula Net SAS	`0.56ms` from Reims, FR
59.2.155.136	AS4766 Korea Telecom	`5.38ms` from Seoul, KR
222.118.161.216	AS4766 Korea Telecom	`4.53ms` from Seoul, KR
213.147.179.8	AS8447 A1 Telekom Austria AG	`5.85ms` from Vienna, AT
74.244.124.120	AS14593 Space Exploration Technologies Corporation	`13.97ms` from Washington, US
98.22.147.40	AS7029 Windstream Communications LLC	`12.34ms` from Chicago, US
34.63.48.232	AS396982 Google LLC	`0.11ms` from Council Bluffs, US
70.113.62.72	AS11427 Charter Communications Inc	`11.47ms` from Dallas, US

Traceroute

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

traceroute -a -n -q1 61.251.66.157

traceroute to 61.251.66.157 (61.251.66.157): 64 hops max, 52 byte packets

1 [AS31898] 140.91.214.44 0.075 ms

2 *

3 *

4 *

5 [AS4766] 112.174.58.50 2.042 ms

6 *

7 *

8 [AS4766] 14.63.78.94 1.872 ms

9 [AS4766] 61.251.66.157 1.406 ms

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On January 19th 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.

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