165.132.40.0/21

AS4665 · Yonsei University

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Summary

Country	South Korea
Domain	yonsei.ac.kr
ASN	AS4665
Parent Range	165.132.0.0/16
Registry	KRNIC
ID	YONSEI-NET-KR

WHOIS Details

inetnum:        165.132.0.0 - 165.132.255.255
netname:        YONSEI-NET-KR
descr:          Yonsei University
country:        KR
admin-c:        WS177-KR
tech-c:         WS177-KR
status:         ALLOCATED PORTABLE
mnt-by:         MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
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:        Seoul Seodaemun-gu Yonsei-ro 50
address:        Yonsei University
country:        KR
phone:          +82-2-2123-3411
e-mail:         network@yonsei.ac.kr
nic-hdl:        WS177-KR
mnt-by:         MNT-KRNIC-AP
changed:        hostmaster@nic.or.kr
source:         KRNIC

Overlapping Ranges

BGP prefixes that contain 165.132.40.0/21

Range	ASN	Company	Num of IPs
165.132.0.0/16	AS131856	Yonsei University	65,536
165.132.0.0/16	AS4665	Yonsei University	65,536

Nearby Ranges

BGP prefixes that overlap with 165.132.0.0/16

Range	ASN	Company	Num of IPs
165.132.0.0/16	AS131856	Yonsei University	65,536
165.132.0.0/16	AS4665	Yonsei University	65,536

Hosted domains

There are 7 domain names hosted across 1 IP address on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
165.132.43.136	decodebiome.com	7

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

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

IP Address	ASN	Details
165.132.45.109	AS4665 Yonsei University	`1.42ms` from Seoul, KR
165.132.46.146	AS4665 Yonsei University	`2.10ms` from Seoul, KR
165.132.43.138	AS4665 Yonsei University	`2.41ms` from Incheon, 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
152.194.3.69	AS701 Verizon Business	`1.14ms` from Ashburn, US
110.168.69.181	AS17552 True Online	`13.48ms` from Bangkok, TH
223.155.95.85	AS4134 CHINANET-BACKBONE	`5.61ms` from Chenzhou, CN
23.28.237.5	AS12083 WideOpenWest Finance LLC	`13.77ms` from Chicago, US
72.32.58.101	AS33070 Rackspace Hosting	`0.95ms` from Dallas, US
103.239.255.21	AS63526 Systems Solutions & development Technologies Limited	`0.40ms` from Dhaka, BD
50.65.199.69	AS6327 Shaw Communications	`7.00ms` from Edmonton, CA
14.240.46.213	AS45899 VNPT Corp	`5.18ms` from Ho Chi Minh City, VN
88.22.175.53	AS3352 TELEFONICA DE ESPANA S.A.U.	`5.26ms` from Madrid, ES
185.3.117.133	AS50563 Onlycable Comunicaciones S.L.	`8.24ms` from Madrid, ES
82.22.70.229	AS3356 Level 3 Parent, LLC	`0.14ms` from Milan, IT
98.246.10.69	AS7922 Comcast Cable Communications, LLC	`4.80ms` from Portland, US
43.216.21.213	AS16509 Amazon.com, Inc.	`0.47ms` from Sepang, MY
193.40.224.181	AS3221 EENet	`0.33ms` from Tallinn, EE
194.65.124.165	AS3243 MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A.	`0.79ms` from Braga, PT
64.28.96.245	AS11320 LightEdge Solutions	`6.78ms` from Dallas, US
86.209.133.5	AS3215 Orange S.A.	`9.57ms` from Frankfurt am Main, DE
118.70.166.149	AS18403 FPT Telecom Company	`1.38ms` from Hanoi, VN
211.194.176.37	AS4766 Korea Telecom	`4.98ms` from Incheon, KR
58.225.107.133	AS9318 SK Broadband Co Ltd	`1.53ms` from Incheon, KR
192.195.65.21	AS25932 Disney Worldwide Services, Inc.	`1.55ms` from Los Angeles, US
79.215.200.149	AS3320 Deutsche Telekom AG	`2.72ms` from Nuernberg, DE
75.1.97.85	AS7018 AT&T Enterprises, LLC	`19.50ms` from San Antonio, US
187.225.221.85	AS8151 UNINET	`7.51ms` from Santiago de Queretaro, MX
186.204.78.165	AS28573 Claro NXT Telecomunicacoes Ltda	`6.95ms` from Vinhedo, BR

Traceroute

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

traceroute -a -n -q1 -m7 165.132.44.181

traceroute to 165.132.44.181 (165.132.44.181): 7 hops max, 52 byte packets

1 [AS26383] 23.164.240.1 0.469 ms

2 *

3 *

4 [AS6939] 184.105.80.36 9.213 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Helsinki, FI

On February 7th 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.

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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