202.4.128.0/20

AS4538  ·  China Education and Research Network Center

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Summary

Country China
Domain buct.edu.cn
ASN AS4538
Parent Range 202.4.128.0/19
Registry APNIC
ID BUCT-CN

WHOIS Details

inetnum:        202.4.128.0 - 202.4.159.255
netname:        BUCT-CN
descr:          Beijing University of Chemical Technology
descr:          P. O. Box 70
descr:          100029 Heping Street
descr:          Beijing
country:        CN
admin-c:        XD36-AP
tech-c:         YW213-AP
tech-c:         CER-AP
abuse-c:        AC1685-AP
status:         ALLOCATED PORTABLE
mnt-by:         APNIC-HM
mnt-irt:        IRT-CERNET-AP
last-modified:  2020-09-03T09:15:59Z
source:         APNIC

irt:            IRT-CERNET-AP
address:        Network Research Center,
address:        Main Bldg, Tsinghua Univ
address:        Beijing 100084, China
phone:          +86-10-62784301
fax-no:         +86-10-62785933
e-mail:         abuse@cernet.edu.cn
abuse-mailbox:  abuse@cernet.edu.cn
admin-c:        CER-AP
tech-c:         CER-AP
auth:           # Filtered
remarks:        timezone GMT+8
remarks:        http://www.ccert.edu.cn
remarks:        abuse@cernet.edu.cn was validated on 2025-08-15
mnt-by:         MAINT-CERNET-AP
last-modified:  2025-11-18T00:26:28Z
source:         APNIC

role:           ABUSE CERNETAP
country:        ZZ
address:        Network Research Center,
address:        Main Bldg, Tsinghua Univ
address:        Beijing 100084, China
phone:          +86-10-62784301
e-mail:         abuse@cernet.edu.cn
admin-c:        CER-AP
tech-c:         CER-AP
nic-hdl:        AC1685-AP
remarks:        Generated from irt object IRT-CERNET-AP
remarks:        abuse@cernet.edu.cn was validated on 2025-08-15
abuse-mailbox:  abuse@cernet.edu.cn
mnt-by:         APNIC-ABUSE
last-modified:  2025-08-15T09:38:28Z
source:         APNIC

role:           CERNET Helpdesk
address:        CERNET Center
address:        Beijing 100084, China
country:        CN
phone:          +86-10-6278-4049
fax-no:         +86-10-6278-5933
e-mail:         helpdesk@cernet.edu.cn
remarks:        abuse@cernet.edu.cn
admin-c:        XL1-CN
tech-c:         SZ2-AP
nic-hdl:        CER-AP
mnt-by:         MAINT-CERNET-AP
last-modified:  2020-09-03T09:14:12Z
source:         APNIC

person:         Xiaoguo Dong
address:        Network Center
address:        Beijing University of Chemistry Technology
address:        Beijing, Beijing 100029, China
country:        CN
nic-hdl:        XD36-AP
e-mail:         dongxg@mail.buct.edu.cn
phone:          +86-10-6443-4922
fax-no:         +86-10-6441-4105
mnt-by:         MAINT-CERNET-AP
last-modified:  2011-12-22T05:21:15Z
source:         APNIC

person:         Yanqing Wang
address:        Network Center
address:        Beijing University of Chemistry Technology
address:        Beijing, Beijing 100029, China
country:        CN
nic-hdl:        YW213-AP
e-mail:         dongxg@mail.buct.edu.cn
phone:          +86-10-6443-4922
fax-no:         +86-10-6441-4105
mnt-by:         MAINT-CERNET-AP
last-modified:  2011-12-22T05:21:15Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 202.4.128.0/20

Range ASN Company Num of IPs
202.4.128.0/19 AS4538 Beijing University of Chemical Technology 8,192

Nearby Ranges

BGP prefixes that overlap with 202.4.0.0/16

Range ASN Company Num of IPs
202.4.32.0/19 AS17993 Vodafone Samoa Limited 8,192
202.4.192.0/19 AS4760 Hong Kong Telecommunications (HKT) Limited 8,192
202.4.96.0/19 AS23956 Amber IT Limited 8,192
202.4.128.0/19 AS4538 Beijing University of Chemical Technology 8,192
202.4.64.0/19 AS9443 VOCUS PTY LTD 8,192
202.4.192.0/19 AS9444 Hong Kong Telecommunications (HKT) Limited 8,192
202.4.224.0/20 AS55803 Hostopia Australia Web Pty Ltd 4,096
202.4.252.0/22 AS4808 Beijing Teletron Telecom Engineering Co., Ltd. 1,024
202.4.170.0/23 AS45726 PT Lion Mentari Airlines 512
202.4.160.0/23 AS18355 PT Kiwoom Sekuritas Indonesia 512
202.4.248.0/23 AS24291 MITSUI & CO., LTD. 512
202.4.250.0/24 AS23642 OBIS-IX,Internet Exchange Point,Okayama,Japan 256
202.4.47.0/24 AS23657 Bear System Range Allocation 256
202.4.182.0/24 AS38233 Gurudas Heritage, 3rd floor 256
202.4.189.0/24 AS38320 Yayasan Indonesia Memberi Solusi 256
202.4.181.0/24 AS1221 GPO Box 2142 256
202.4.251.0/24 AS45495 Interchange Limited 256
202.4.178.0/24 AS45526 Ugam Solutions Pvt Ltd 256
202.4.168.0/24 AS45901 Vietnam Export Import Commercial Joint stock Bank 256
202.4.176.0/24 AS45902 Hai Phong Securities Company 256
202.4.173.0/24 AS45925 Teletalk Bangladesh Ltd. 256
202.4.175.0/24 AS45937 Brisbane Airport Corporation 256
202.4.167.0/24 AS45939 Ground Floor, Bahria Complex II, 256
202.4.179.0/24 AS46017 Badan Informasi Geospasial 256
202.4.177.0/24 AS4755 SQS INDIA BFSI LIMITED 256
202.4.31.0/24 AS4764 G. P. STERN PTY LTD 256
202.4.191.0/24 AS55343 Conduent Business Services Philippines Inc. 256
202.4.186.0/24 AS63510 Syiah Kuala University (Unsyiah) 256
202.4.172.0/24 AS45154 Appnomic Systems 256
202.4.180.0/24 AS131265 TCS eServe Limited 256
202.4.188.0/24 AS131268 Sunshine Coast Regional Council 256
202.4.169.0/24 AS137085 Starnet Broaband Services private limited 256
202.4.183.0/24 AS17477 1144 NEPEAN HIGHWAY 256
202.4.190.0/24 AS17535 Ebix Australia Pty Ltd 256
202.4.42.0/24 AS17993 Bear System Samoa 256
202.4.43.0/24 AS17993 Bear System Range Allocation 256
202.4.46.0/24 AS17993 Bear System Range Allocation 256
202.4.52.0/24 AS17993 Ipasifika Samoa Ltd 256
202.4.53.0/24 AS17993 Ipasifika Samoa Ltd 256

Hosted domains

There are no domains currently hosted on this ASN.

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

Pingable IPs

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

IP Address ASN Details
202.4.130.134 AS4538 China Education and Research Network Center 5.01ms from Beijing, CN
202.4.128.209 AS4538 China Education and Research Network Center 3.04ms from Beijing, CN

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
188.226.136.4 AS14061 DigitalOcean, LLC 0.18ms from Amsterdam, NL
9.163.137.180 AS8075 Microsoft Corporation 0.27ms from Amsterdam, NL
208.196.103.212 AS701 Verizon Business 0.50ms from Ashburn, US
75.90.51.68 AS7029 Windstream Communications LLC 13.18ms from Atlanta, US
73.227.35.164 AS7922 Comcast Cable Communications, LLC 8.58ms from Boston, US
181.102.241.100 AS7303 Telecom Argentina S.A. 11.93ms from Buenos Aires, AR
61.2.161.100 AS9829 National Internet Backbone 8.57ms from Chennai, IN
81.246.24.68 AS5432 Proximus NV 4.12ms from Gravelines, FR
193.167.177.52 AS1741 CSC - Tieteen tietotekniikan keskus Oy 0.68ms from Helsinki, FI
98.39.154.68 AS7922 Comcast Cable Communications, LLC 7.91ms from Houston, US
221.203.15.180 AS4837 CHINA UNICOM China169 Backbone 4.93ms from Liaoyang, CN
86.166.207.20 AS2856 British Telecommunications PLC 1.81ms from London, GB
20.90.234.100 AS8075 Microsoft Corporation 0.20ms from London, GB
213.78.53.180 AS13285 TalkTalk Communications Limited 2.51ms from Manchester, GB
24.159.231.20 AS20115 Charter Communications LLC 19.12ms from Minneapolis, US
208.217.1.68 AS22234 The Related Companies, Inc. 2.85ms from Secaucus, US
58.76.91.4 AS3786 LG DACOM Corporation 3.61ms from Seoul, KR
211.211.241.196 AS9318 SK Broadband Co Ltd 3.66ms from Seoul, KR
118.87.193.36 AS4721 JCOM Co., Ltd. 12.30ms from Tokyo, JP
91.146.29.228 AS3226 OOO NI 7.63ms from Yekaterinburg, RU
177.250.44.68 AS27768 COMPAÑIA PARAGUAYA DE COMUNICACIONES S.A. (COPACO S.A.) 7.39ms from Asuncion, PY
73.7.27.132 AS7922 Comcast Cable Communications, LLC 3.84ms from Atlanta, US
76.118.3.132 AS7922 Comcast Cable Communications, LLC 8.67ms from Boston, US
149.106.197.132 AS394161 Tesla Motors, Inc. 0.21ms from Dallas, US
121.40.70.68 AS37963 Hangzhou Alibaba Advertising Co.,Ltd. 2.19ms from Hangzhou, CN

Traceroute

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

$
traceroute -a -n -q1 -f3 -m14 202.4.134.69
traceroute to 202.4.134.69 (202.4.134.69): 14 hops max, 52 byte packets
3 [AS749] 11.95.20.9 0.4 ms
4 *
5 *
6 *
7 *
8 [] 103.16.102.71 63.531 ms
9 *
10 [AS174] 38.150.75.1 65.624 ms
11 [AS4538] 101.4.114.181 98.996 ms
12 *
13 *
14 *
Measurement taken from IPinfo ProbeNet in Manila, PH
On

What are IP address ranges?

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