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 2025-01-22
mnt-by:         MAINT-CERNET-AP
last-modified:  2025-01-22T13:47:43Z
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 2025-01-22
abuse-mailbox:  abuse@cernet.edu.cn
mnt-by:         APNIC-ABUSE
last-modified:  2025-01-22T16:25:45Z
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

BGP prefixes that are contained by 202.4.128.0/20

Range ASN Company Num of IPs
202.4.136.0/24 AS4538 Beijing University of Chemical Technology 256
202.4.135.0/24 AS4538 Beijing University of Chemical Technology 256
202.4.130.0/24 AS4538 Beijing University of Chemical Technology 256
202.4.134.0/24 AS4538 Beijing University of Chemical Technology 256

Nearby Ranges

BGP prefixes that overlap with 202.4.0.0/16

Range ASN Company Num of IPs
202.4.64.0/19 AS9443 VOCUS PTY LTD 8,192
202.4.192.0/19 AS9444 Hong Kong Telecommunications (HKT) Limited 8,192
202.4.96.0/19 AS23956 DhakaCom Limited 8,192
202.4.128.0/19 AS4538 Beijing University of Chemical Technology 8,192
202.4.32.0/19 AS17993 Vodafone Samoa Limited 8,192
202.4.224.0/20 AS55803 Hostopia Australia Web Pty Ltd 4,096
202.4.144.0/20 AS4538 Beijing University of Chemical Technology 4,096
202.4.0.0/21 AS7306 Asian Development Bank 2,048
202.4.0.0/22 AS7306 Asian Development Bank 1,024
202.4.4.0/22 AS7306 Asian Development Bank 1,024
202.4.252.0/22 AS4808 Beijing Teletron Telecom Engineering Co., Ltd. 1,024
202.4.10.0/23 AS7306 Asian Development Bank 512
202.4.202.0/23 AS9444 Hong Kong Telecommunications (HKT) Limited 512
202.4.216.0/23 AS9444 Hong Kong Telecommunications (HKT) Limited 512
202.4.160.0/23 AS18355 PT Kiwoom Sekuritas Indonesia 512
202.4.248.0/23 AS24291 MITSUI & CO., LTD. 512
202.4.8.0/23 AS7306 Asian Development Bank 512
202.4.204.0/23 AS9444 Hong Kong Telecommunications (HKT) Limited 512
202.4.218.0/23 AS9444 Hong Kong Telecommunications (HKT) Limited 512
202.4.37.0/24 AS17993 Vodafone Samoa Limited 256
202.4.179.0/24 AS46017 Badan Informasi Geospasial 256
202.4.166.0/24 AS55326 22 Delhi Street 256
202.4.175.0/24 AS45937 Brisbane Airport Corporation 256
202.4.51.0/24 AS17993 Vodafone Samoa Limited 256
202.4.47.0/24 AS23657 Bear System Range Allocation 256
202.4.103.0/24 AS23956 DhakaCom Limited 256
202.4.110.0/24 AS23956 DhakaCom Limited 256
202.4.33.0/24 AS17993 Vodafone Samoa Limited 256
202.4.106.0/24 AS23956 DhakaCom Limited 256
202.4.48.0/24 AS17993 Vodafone Samoa Limited 256
202.4.191.0/24 AS55343 Conduent Business Services Philippines Inc. 256
202.4.251.0/24 AS45495 Interchange Limited 256
202.4.98.0/24 AS23956 DhakaCom Limited 256
202.4.57.0/24 AS17993 Vodafone Samoa Limited 256
202.4.41.0/24 AS17993 Vodafone Samoa Limited 256
202.4.100.0/24 AS23956 DhakaCom Limited 256
202.4.127.0/24 AS23956 DhakaCom Limited 256
202.4.38.0/24 AS17993 Vodafone Samoa Limited 256
202.4.112.0/24 AS23956 DhakaCom Limited 256
202.4.115.0/24 AS23956 DhakaCom Limited 256
202.4.108.0/24 AS23956 DhakaCom Limited 256
202.4.56.0/24 AS17993 Vodafone Samoa Limited 256
202.4.196.0/24 AS9444 Hong Kong Telecommunications (HKT) Limited 256
202.4.61.0/24 AS17993 Vodafone Samoa Limited 256
202.4.46.0/24 AS23657 Bear System Range Allocation 256
202.4.173.0/24 AS45925 Teletalk Bangladesh Ltd. 256
202.4.114.0/24 AS23956 DhakaCom Limited 256
202.4.101.0/24 AS23956 DhakaCom Limited 256
202.4.168.0/24 AS45901 Vietnam Export Import Commercial Joint stock Bank 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.
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Pingable IPs

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

IP Address ASN Details
202.4.130.200 AS4538 China Education and Research Network Center 5.34ms from Beijing, CN
202.4.128.209 AS4538 China Education and Research Network Center 3.17ms 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
188.42.247.212 AS7979 Servers.com, Inc. 0.12ms from Amsterdam, NL
62.159.97.116 AS3320 Deutsche Telekom AG 1.53ms from Berlin, DE
190.231.244.244 AS7303 Telecom Argentina S.A. 1.55ms from Buenos Aires, AR
89.32.90.148 AS56595 Fluency Communications Ltd 0.55ms from Manchester, GB
121.117.123.228 AS4713 NTT Communications Corporation 4.28ms from Tokyo, JP
2.176.53.228 AS58224 Iran Telecommunication Company PJS 15.37ms from Yerevan, AM
83.36.134.36 AS3352 TELEFONICA DE ESPANA S.A.U. 3.28ms from Madrid, ES
186.203.25.180 AS26615 TIM S/A 2.38ms from Osasco, BR
14.44.187.84 AS4766 Korea Telecom 1.95ms from Seoul, KR
37.234.234.244 AS213155 Yettel Hungary Ltd. 16.66ms from Budapest, HU
152.160.234.68 AS54163 AHOSTING 0.28ms from Detroit, US
84.203.88.84 AS31122 Digiweb ltd 1.61ms from Dublin, IE
218.13.146.132 AS4134 CHINANET-BACKBONE 3.36ms from Guangzhou, CN
175.167.20.132 AS4837 CHINA UNICOM China169 Backbone 6.03ms from Liaoyang, CN
173.254.226.196 AS36352 HostPapa 0.26ms from Los Angeles, US
77.51.17.244 AS12389 PJSC Rostelecom 4.03ms from Moscow, RU
205.123.126.100 AS210 Utah Education Network 4.89ms from Salt Lake City, US
64.52.167.116 AS212581 SGX FX SYSTEMS UK LIMITED 0.31ms from Singapore, SG
85.148.116.180 AS5390 Euronet Communications B.V. 1.30ms from Amsterdam, NL
180.17.154.148 AS4713 NTT Communications Corporation 4.08ms from Osaka, JP
142.215.186.36 AS15830 Equinix (EMEA) Acquisition Enterprises B.V. 0.30ms from Secaucus, US
208.217.1.68 AS22234 The Related Companies, Inc. 1.86ms from Secaucus, US
58.76.91.4 AS3786 LG DACOM Corporation 3.48ms from Seoul, KR
2.71.176.20 AS44034 Hi3G Access AB 6.13ms from Stockholm, SE
157.65.116.116 AS2514 NTT PC Communications, Inc. 3.34ms from Tokyo, JP

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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