121.139.137.0/24

AS3786 · LG DACOM Corporation

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Summary

Country	South Korea
Domain	kt.com
ASN	AS3786
Parent Range	121.128.0.0/11
Registry	KRNIC
ID	121.139.137.0-121.139.137.255

WHOIS Details

inetnum:            121.139.137.0 - 121.139.137.255
descr:              Eseuaitissi jusikhoesa
network-type:       CUSTOMER
address:            23 Anajiro213beongil Gyeyang-Gu Incheongwangyeok-Si
zip-code:           21112
created:            2024-02-16
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 121.139.137.0/24

Range	ASN	Company	Num of IPs
121.128.0.0/11	AS17588	Korea Telecom	2,097,152
121.128.0.0/11	AS18333	Korea Telecom	2,097,152
121.128.0.0/11	AS38122	Korea Telecom	2,097,152
121.128.0.0/11	AS4766	Korea Telecom	2,097,152
121.128.0.0/11	AS9647	Korea Telecom	2,097,152
121.128.0.0/11	AS9856	Korea Telecom	2,097,152

Nearby Ranges

BGP prefixes that overlap with 121.139.0.0/16

Range	ASN	Company	Num of IPs
121.128.0.0/11	AS38122	Korea Telecom	2,097,152
121.128.0.0/11	AS18333	Korea Telecom	2,097,152
121.128.0.0/11	AS9856	Korea Telecom	2,097,152
121.128.0.0/11	AS17588	Korea Telecom	2,097,152
121.128.0.0/11	AS4766	Korea Telecom	2,097,152
121.128.0.0/11	AS9647	Korea Telecom	2,097,152

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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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
121.139.137.149	AS3786 LG DACOM Corporation	`7.04ms` 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
134.128.125.184	AS11377 SendGrid, Inc.	`0.38ms` from Ashburn, US
81.70.100.120	AS45090 Shenzhen Tencent Computer Systems Company Limited	`1.78ms` from Beijing, CN
35.92.22.232	AS16509 Amazon.com, Inc.	`0.25ms` from Boardman, US
44.247.89.56	AS16509 Amazon.com, Inc.	`0.49ms` from Boardman, US
181.104.23.8	AS7303 Telecom Argentina S.A.	`1.19ms` from Buenos Aires, AR
105.159.155.152	AS36903 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM	`5.45ms` from Casablanca, MA
50.82.167.232	AS30036 Mediacom Communications Corp	`13.32ms` from Chicago, US
93.131.239.248	AS6805 Telefonica Germany GmbH & Co.OHG	`3.63ms` from Duesseldorf, DE
102.161.1.152	AS30999 EMTEL LIMITED	`12.63ms` from Ebene, MU
86.154.135.56	AS2856 British Telecommunications PLC	`5.64ms` from Erith, GB
188.150.237.56	AS1257 Tele2 Sverige AB	`4.21ms` from Falkenberg, SE
182.93.76.120	AS4007 Subisu Cablenet (Pvt) Ltd, Baluwatar, Kathmandu, Nepal	`0.56ms` from Kathmandu, NP
24.205.154.248	AS20115 Charter Communications LLC	`3.82ms` from Los Angeles, US
79.220.38.24	AS3320 Deutsche Telekom AG	`6.30ms` from Nuernberg, DE
121.83.254.88	AS17511 OPTAGE Inc.	`1.20ms` from Osaka, JP
94.239.63.200	AS5410 Bouygues Telecom SA	`2.81ms` from Paris, FR
13.125.241.232	AS16509 Amazon.com, Inc.	`0.92ms` from Seoul, KR
61.106.81.8	AS17839 LG HelloVision Corp.	`2.10ms` from Seoul, KR
121.132.54.24	AS4766 Korea Telecom	`1.93ms` from Seoul, KR
112.105.71.88	AS4780 Digital United Inc.	`6.54ms` from Taipei, TW
112.138.21.200	AS10010 TOKAI Communications Corporation	`6.58ms` from Tokyo, JP
92.130.211.168	AS3215 Orange S.A.	`18.91ms` from Antananarivo, MG
82.21.194.104	AS5065 Bunny Communications	`0.23ms` from Ashburn, US
39.105.175.232	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`1.96ms` from Beijing, CN
92.117.141.56	AS8881 1&1 Versatel GmbH	`2.93ms` from Duesseldorf, DE

Traceroute

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

traceroute -a -n -q1 -m8 121.139.137.211

traceroute to 121.139.137.211 (121.139.137.211): 8 hops max, 52 byte packets

1 [AS49544] 109.200.214.195 0.255 ms

2 *

3 [AS3356] 4.69.227.2 127.47 ms

4 [AS3356] 4.68.75.254 113.084 ms

5 [AS3786] 1.208.148.117 112.919 ms

6 *

7 *

8 *

Measurement taken from

IPinfo ProbeNet in Sydney, AU

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.

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