203.223.177.0/24

AS4766 · Korea Telecom

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Summary

Country	South Korea
Domain	korea.kr
ASN	AS4766
Registry	APNIC
ID	UESRI

WHOIS Details

inetnum:        203.223.177.0 - 203.223.177.255
netname:        UESRI
descr:          Ulsan education   Science research institute
country:        KR
admin-c:        IM724-AP
tech-c:         IM724-AP
status:         ALLOCATED PORTABLE
mnt-by:         MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
last-modified:  2019-04-29T07:40:11Z
source:         APNIC

irt:            IRT-KRNIC-KR
address:        Jeollanam-do Naju-si Jinheung-gil
e-mail:         irt@nic.or.kr
abuse-mailbox:  irt@nic.or.kr
admin-c:        IM574-AP
tech-c:         IM574-AP
auth:           # Filtered
remarks:        irt@nic.or.kr was validated on 2020-04-09
mnt-by:         MNT-KRNIC-AP
last-modified:  2021-06-15T06:21:49Z
source:         APNIC

person:         IP Manager
address:        Ulsan Nam-gu Nambusunhwando-ro 111
country:        KR
phone:          +82-52-220-1912
e-mail:         ahnjs7@korea.kr
nic-hdl:        IM724-AP
mnt-by:         MNT-KRNIC-AP
last-modified:  2022-11-01T08:32:02Z
source:         APNIC

inetnum:        203.223.177.0 - 203.223.177.255
netname:        UESRI-KR
descr:          Ulsan education   Science research institute
country:        KR
admin-c:        IM3101-KR
tech-c:         IM3101-KR
status:         ALLOCATED PORTABLE
mnt-by:         MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
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.
changed:        hostmaster@nic.or.kr
source:         KRNIC

person:         IP Manager
address:        Ulsan Nam-gu Nambusunhwando-ro 111
address:        center
country:        KR
phone:          +82-52-220-1912
e-mail:         ahnjs7@korea.kr
nic-hdl:        IM3101-KR
mnt-by:         MNT-KRNIC-AP
changed:        hostmaster@nic.or.kr
source:         KRNIC

Nearby Ranges

BGP prefixes that overlap with 203.223.0.0/16

Range	ASN	Company	Num of IPs
203.223.128.0/19	AS24218	Global Transit Communications, Malaysia, Networks - 203.223.128.0/19	8,192
203.223.96.0/19	AS18313	LG HelloVision Corp.	8,192
203.223.96.0/19	AS38091	LG HelloVision Corp.	8,192
203.223.32.0/20	AS17726	Ministry of Posts and Telecommunication Cambodia(MPTC)	4,096
203.223.48.0/20	AS17955	DENSAN CO., LTD.	4,096
203.223.160.0/20	AS23966	LINKdotNET Telecom Limited	4,096
203.223.24.0/21	AS9999	AT TOKYO Corporation	2,048
203.223.180.0/22	AS17698	COMMUNITY NETWORK CENTER INC.	1,024
203.223.56.0/22	AS17955	Densan Co., Ltd.	1,024
203.223.20.0/24	AS136167	CHINA TELECOM(MACAU) COMPANY LIMITED	256
203.223.32.0/24	AS17726	Telecom Cambodia (T.C.)	256
203.223.33.0/24	AS17726	Telecom Cambodia (T.C.)	256
203.223.34.0/24	AS17726	Telecom Cambodia (T.C.)	256
203.223.35.0/24	AS17726	Telecom Cambodia (T.C.)	256
203.223.36.0/24	AS17726	Telecom Cambodia (T.C.)	256
203.223.37.0/24	AS17726	Telecom Cambodia (T.C.)	256
203.223.38.0/24	AS17726	Telecom Cambodia (T.C.)	256
203.223.39.0/24	AS17726	Telecom Cambodia (T.C.)	256
203.223.40.0/24	AS17726	Telecom Cambodia (T.C.)	256
203.223.41.0/24	AS17726	Telecom Cambodia (T.C.)	256
203.223.42.0/24	AS17726	Telecom Cambodia (T.C.)	256
203.223.43.0/24	AS17726	Telecom Cambodia (T.C.)	256
203.223.44.0/24	AS17726	Telecom Cambodia (T.C.)	256
203.223.45.0/24	AS17726	Telecom Cambodia (T.C.)	256
203.223.46.0/24	AS17726	Telecom Cambodia (T.C.)	256
203.223.47.0/24	AS17726	Telecom Cambodia (T.C.)	256
203.223.176.0/24	AS45636	Videocon d2h Limited	256
203.223.17.0/24	AS136167	CHINA TELECOM(MACAU) COMPANY LIMITED	256
203.223.178.0/24	AS45640	Suite 1301, Chater House	256
203.223.179.0/24	AS151833	Level 5, 355 Spencer Street	256
203.223.18.0/24	AS136167	CHINA TELECOM(MACAU) COMPANY LIMITED	256
203.223.19.0/24	AS136167	CHINA TELECOM(MACAU) COMPANY LIMITED	256

Hosted domains

There are 233 domain names hosted across 3 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
203.223.177.51	joongnam.es.kr	231
203.223.177.64	usm.go.kr	1
203.223.177.86	bigtreepg.kr	1

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

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

IP Address	ASN	Details
203.223.177.163	AS4766 Korea Telecom	`7.36ms` 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
197.164.137.184	AS24863 Link Egypt (Link.NET)	`5.41ms` from Cairo, EG
102.222.194.24	AS329153 ISWCORP (PTY) LTD	`4.15ms` from Cape Town, ZA
154.125.200.248	AS8346 SONATEL-AS Autonomous System	`2.55ms` from Dakar, SN
149.233.193.232	AS15943 wilhelm.tel GmbH	`0.49ms` from Hamburg, DE
68.102.75.152	AS22773 Cox Communications Inc.	`9.04ms` from Kansas City, US
4.250.46.72	AS8075 Microsoft Corporation	`0.20ms` from London, GB
164.215.4.24	AS35432 Cablenet Communication Systems plc	`0.96ms` from Nicosia, CY
175.253.83.56	AS4766 Korea Telecom	`5.29ms` from Seoul, KR
115.4.205.248	AS4766 Korea Telecom	`1.52ms` from Seoul, KR
1.168.224.104	AS3462 Data Communication Business Group	`2.16ms` from Taichung, TW
34.83.194.216	AS396982 Google LLC	`0.15ms` from The Dalles, US
40.118.11.8	AS8075 Microsoft Corporation	`0.24ms` from Amsterdam, NL
174.79.6.248	AS22773 Cox Communications Inc.	`6.21ms` from Atlanta, US
27.10.173.232	AS4837 CHINA UNICOM China169 Backbone	`2.08ms` from Chongqing, CN
2.106.52.152	AS3292 TDC Holding A/S	`0.72ms` from Copenhagen, DK
9.141.35.232	AS8075 Microsoft Corporation	`1.15ms` from Frankfurt am Main, DE
122.241.39.200	AS4134 CHINANET-BACKBONE	`9.82ms` from Hangzhou, CN
81.159.195.72	AS2856 British Telecommunications PLC	`4.28ms` from London, GB
195.80.18.104	AS34442 BNW TECHNOLOGY LTD	`10.23ms` from London, GB
84.65.229.104	AS5378 Vodafone Limited	`5.87ms` from London, GB
93.149.73.72	AS30722 Vodafone Italia S.p.A.	`11.18ms` from Milan, IT
110.66.178.8	AS2527 Sony Network Communications Inc.	`2.16ms` from Osaka, JP
187.255.53.72	AS28573 Claro NXT Telecomunicacoes Ltda	`7.19ms` from Osasco, BR
81.254.211.56	AS3215 Orange S.A.	`8.47ms` from Paris, FR
211.48.181.72	AS4766 Korea Telecom	`6.69ms` from Seoul, KR

Traceroute

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

traceroute -a -n -q1 203.223.177.163

traceroute to 203.223.177.163 (203.223.177.163): 64 hops max, 52 byte packets

1 [AS202422] 92.223.79.2 0.107 ms

2 *

3 *

4 *

5 [AS6762] 195.22.195.25 189.042 ms

6 [AS6762] 195.22.206.145 193.441 ms

7 [AS4766] 112.174.87.13 309.307 ms

8 [AS4766] 112.174.86.189 309.159 ms

9 *

10 *

11 [AS4766] 211.220.241.98 305.942 ms

12 *

13 [AS4766] 203.223.177.163 317.952 ms

Measurement taken from

IPinfo ProbeNet in Milan, IT

On September 11th 2025

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