1.233.236.0/23

AS4665 · Yonsei University

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Summary

Country	South Korea
Domain	yonsei.ac.kr
ASN	AS4665
Registry	KRNIC
ID	YONSEI-NET-KR

WHOIS Details

inetnum:        1.233.236.0 - 1.233.236.255
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

Nearby Ranges

BGP prefixes that overlap with 1.233.0.0/16

Range	ASN	Company	Num of IPs
1.233.2.0/24	AS38123	SK Broadband Co Ltd	256
1.233.226.0/24	AS4665	Yonsei University	256
1.233.238.0/24	AS4665	Yonsei University	256
1.233.239.0/24	AS4665	Yonsei University	256
1.233.240.0/24	AS4665	Yonsei University	256
1.233.241.0/24	AS4665	Yonsei University	256
1.233.242.0/24	AS4665	Yonsei University	256
1.233.243.0/24	AS4665	Yonsei University	256
1.233.244.0/24	AS4665	Yonsei University	256
1.233.245.0/24	AS4665	Yonsei University	256
1.233.246.0/24	AS4665	Yonsei University	256
1.233.247.0/24	AS4665	Yonsei University	256
1.233.248.0/24	AS4665	Yonsei University	256
1.233.249.0/24	AS4665	Yonsei University	256
1.233.250.0/24	AS4665	Yonsei University	256
1.233.251.0/24	AS4665	Yonsei University	256
1.233.252.0/24	AS4665	Yonsei University	256
1.233.253.0/24	AS4665	Yonsei University	256
1.233.254.0/24	AS4665	Yonsei University	256
1.233.255.0/24	AS4665	Yonsei University	256

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

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
45.153.218.7	AS60781 LeaseWeb Netherlands B.V.	`0.30ms` from Amsterdam, NL
102.184.89.103	AS24835 Vodafone Data	`15.14ms` from Cairo, EG
96.176.197.39	AS53297 Comcast Cable Communications, LLC	`0.94ms` from Chicago, US
98.55.62.23	AS7922 Comcast Cable Communications, LLC	`2.76ms` from Denver, US
35.32.69.167	AS27274 Central Michigan University	`4.51ms` from Detroit, US
23.120.223.167	AS7018 AT&T Enterprises, LLC	`5.04ms` from Houston, US
39.130.142.87	AS9808 China Mobile Communications Group Co., Ltd.	`2.68ms` from Kunming, CN
185.210.0.23	AS3303 Swisscom (Switzerland) Ltd	`1.03ms` from Lausanne, CH
38.148.250.7	AS8796 FASTNET DATA INC	`0.45ms` from Los Angeles, US
82.225.118.23	AS12322 Free SAS	`8.04ms` from Paris, FR
93.93.162.135	AS44701 Software Design srl	`4.45ms` from Rome, IT
112.87.186.103	AS4837 CHINA UNICOM China169 Backbone	`4.51ms` from Shanghai, CN
106.13.2.167	AS38365 Beijing Baidu Netcom Science and Technology Co., Ltd.	`5.02ms` from Shenzhen, CN
46.194.84.119	AS8434 Telenor Sverige AB	`19.17ms` from Stockholm, SE
126.218.5.199	AS17676 SoftBank Corp.	`3.15ms` from Tokyo, JP
106.202.251.119	AS24560 Bharti Airtel Ltd., Telemedia Services	`9.97ms` from Delhi, IN
1.95.17.55	AS55990 Huawei Cloud Service data center	`1.01ms` from Guiyang, CN
209.177.115.87	AS5650 Frontier Communications of America, Inc.	`10.71ms` from Los Angeles, US
86.202.73.7	AS3215 Orange S.A.	`2.12ms` from Lyon, FR
212.183.213.135	AS6739 VODAFONE ONO, S.A.	`8.55ms` from Madrid, ES
18.229.234.7	AS16509 Amazon.com, Inc.	`0.17ms` from Osasco, BR
124.132.125.7	AS4837 CHINA UNICOM China169 Backbone	`5.29ms` from Qingdao, CN
156.47.84.151	AS14051 Fidium	`4.41ms` from Santa Clara, US
110.180.145.183	AS4134 CHINANET-BACKBONE	`6.37ms` from Taiyuan, CN
5.107.74.167	AS5384 Emirates Internet	`2.64ms` from Al Fujairah City, AE

Traceroute

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

traceroute -a -n -q1 -f2 -m14 1.233.237.158

traceroute to 1.233.237.158 (1.233.237.158): 14 hops max, 52 byte packets

2 [] 91.200.241.196 32.067 ms

3 [] 91.200.241.188 9.62 ms

4 *

5 *

6 *

7 *

8 *

9 *

10 [AS9318] 211.117.205.74 233.928 ms

11 [AS4665] 1.233.206.27 217.516 ms

12 *

13 *

14 *

Measurement taken from

IPinfo ProbeNet in Amsterdam, NL

On March 13th 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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