202.4.128.0/19

AS4538  ·  China Education and Research Network Center

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Summary

Country China
Domain buct.edu.cn
ASN AS4538
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:         [email protected]
abuse-mailbox:  [email protected]
admin-c:        CER-AP
tech-c:         CER-AP
auth:           # Filtered
remarks:        timezone GMT+8
remarks:        http://www.ccert.edu.cn
remarks:        [email protected] 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:         [email protected]
admin-c:        CER-AP
tech-c:         CER-AP
nic-hdl:        AC1685-AP
remarks:        Generated from irt object IRT-CERNET-AP
remarks:        [email protected] was validated on 2025-08-15
abuse-mailbox:  [email protected]
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:         [email protected]
remarks:        [email protected]
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:         [email protected]
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:         [email protected]
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

Nearby Ranges

BGP prefixes that overlap with 202.4.0.0/16

Range ASN Company Num of IPs
202.4.192.0/19 AS9444 Hong Kong Telecommunications (HKT) Limited 8,192
202.4.32.0/19 AS17993 Vodafone Samoa Limited 8,192
202.4.96.0/19 AS23956 Amber IT Limited 8,192
202.4.192.0/19 AS4760 Hong Kong Telecommunications (HKT) Limited 8,192
202.4.64.0/19 AS9443 VOCUS PTY LTD 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
202.4.248.0/23 AS24291 MITSUI & CO., LTD. 512
202.4.170.0/23 AS45726 PT Lion Mentari Airlines 512
202.4.160.0/23 AS18355 PT Kiwoom Sekuritas Indonesia 512
202.4.53.0/24 AS17993 Ipasifika Samoa Ltd 256
202.4.250.0/24 AS23642 OBIS-IX,Internet Exchange Point,Okayama,Japan 256
202.4.182.0/24 AS38233 Gurudas Heritage, 3rd floor 256
202.4.189.0/24 AS38320 Yayasan Indonesia Memberi Solusi 256
202.4.172.0/24 AS45154 Appnomic Systems 256
202.4.186.0/24 AS63510 Syiah Kuala University (Unsyiah) 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
202.4.181.0/24 AS1221 GPO Box 2142 256
202.4.31.0/24 AS4764 G. P. STERN PTY LTD 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
202.4.191.0/24 AS55343 Conduent Business Services Philippines Inc. 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

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
202.4.128.209 AS4538 China Education and Research Network Center 3.09ms from Beijing, CN
202.4.130.200 AS4538 China Education and Research Network Center 5.25ms 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
213.126.187.147 AS33915 Vodafone Libertel B.V. 1.16ms from Amsterdam, NL
149.51.58.195 AS7029 Windstream Communications LLC 0.49ms from Ashburn, US
181.26.205.51 AS22927 Telefonica de Argentina 2.25ms from Buenos Aires, AR
102.41.76.99 AS8452 TE-AS 3.34ms from Cairo, EG
79.233.127.99 AS3320 Deutsche Telekom AG 3.52ms from Duesseldorf, DE
81.158.52.67 AS2856 British Telecommunications PLC 4.31ms from Erith, GB
69.136.241.67 AS7922 Comcast Cable Communications, LLC 9.62ms from New York City, US
218.71.181.83 AS4134 CHINANET-BACKBONE 3.52ms from Ningbo, CN
27.207.6.243 AS4837 CHINA UNICOM China169 Backbone 9.44ms from Qingdao, CN
201.105.42.115 AS8151 UNINET 11.70ms from Santiago de Queretaro, MX
220.254.191.3 AS18268 Naganoken Kyodou Densan Co.Ltd. 5.00ms from Tokyo, JP
31.7.78.147 AS43754 Asiatech Data Transmission company 15.08ms from Yerevan, AM
171.8.95.19 AS4134 CHINANET-BACKBONE 9.33ms from Zhengzhou, CN
96.30.92.195 AS24097 CSLOXINFO Project for Magnecomp Precision 3.15ms from Bangkok, TH
86.126.134.147 AS8708 DIGI ROMANIA S.A. 0.66ms from Bucharest, RO
87.155.221.115 AS3320 Deutsche Telekom AG 4.11ms from Frankfurt am Main, DE
198.22.125.3 AS398434 Internet 3.14 0.21ms from Fremont, US
192.149.47.195 AS36511 Dauphin Telecom Guadeloupe 10.49ms from Le Lamentin, MQ
82.32.170.179 AS5089 Virgin Media Limited 4.89ms from London, GB
82.31.75.35 AS5089 Virgin Media Limited 10.73ms from London, GB
75.220.130.163 AS6167 Verizon Business 10.30ms from Miami, US
24.230.141.3 AS11232 Midcontinent Communications 10.82ms from Minneapolis, US
200.54.236.3 AS16629 CTC. CORP S.A. (TELEFONICA EMPRESAS) 1.34ms from Santiago, CL
189.234.52.3 AS8151 UNINET 4.29ms from Santiago de Queretaro, MX
68.218.97.195 AS8075 Microsoft Corporation 0.70ms from Sydney, AU

Traceroute

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

$
traceroute -a -n -q1 -f2 -m16 202.4.158.215
traceroute to 202.4.158.215 (202.4.158.215): 16 hops max, 52 byte packets
3 *
4 [AS9658] 180.232.5.41 5.902 ms
5 *
6 [AS9002] 87.245.232.4 54.078 ms
7 [AS9002] 87.245.241.17 98.936 ms
8 *
9 [AS174] 38.150.75.1 40.758 ms
10 *
11 *
12 [AS4538] 101.4.117.81 74.871 ms
13 [AS4538] 101.4.116.94 86.328 ms
14 *
15 *
16 *
Measurement taken from IPinfo ProbeNet in Angeles City, PH
On

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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