202.113.128.0/20

AS4538  ·  China Education and Research Network Center

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Summary

Country China
Domain cernet.edu.cn
ASN AS4538
Parent Range 202.112.0.0/15
Registry APNIC
ID BJR-CERNET

WHOIS Details

inetnum:        202.112.0.0 - 202.113.255.255
netname:        BJR-CERNET
descr:          China Education and Research Network
descr:          Beijing Regional Network
country:        CN
org:            ORG-CEAR1-AP
admin-c:        CER-AP
tech-c:         CER-AP
abuse-c:        AC1685-AP
status:         ALLOCATED PORTABLE
remarks:        origin AS4538
mnt-by:         APNIC-HM
mnt-lower:      MAINT-CERNET-AP
mnt-routes:     MAINT-CERNET-AP
mnt-irt:        IRT-CERNET-AP
last-modified:  2020-05-28T02:35:51Z
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:  2025-09-04T00:59:41Z
source:         APNIC

organisation:   ORG-CEAR1-AP
org-name:       China Education and Research Network (CERNET)
country:        CN
address:        FIT 3-220,
address:        Tsinghua University
phone:          +86-10-62785983
fax-no:         +86-10-62785933
e-mail:         hostmaster@cernic.net
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2018-09-13T12:56:34Z
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

Overlapping Ranges

BGP prefixes that contain 202.113.128.0/20

Range ASN Company Num of IPs
202.112.0.0/15 AS24350 China Education and Research Network 131,072
202.112.0.0/15 AS4538 China Education and Research Network 131,072
202.112.0.0/15 AS24369 China Education and Research Network 131,072
202.112.0.0/15 AS24364 China Education and Research Network 131,072
202.112.0.0/15 AS24361 China Education and Research Network 131,072
202.112.0.0/15 AS24358 China Education and Research Network 131,072
202.112.0.0/15 AS24357 China Education and Research Network 131,072
202.112.0.0/15 AS24355 China Education and Research Network 131,072
202.112.0.0/15 AS24352 China Education and Research Network 131,072
202.112.0.0/15 AS24348 China Education and Research Network 131,072
202.112.0.0/15 AS24349 China Education and Research Network 131,072

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

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

IP Address ASN Details
202.113.136.218 AS4538 China Education and Research Network Center 4.27ms from Beijing, CN
202.113.128.253 AS4538 China Education and Research Network Center 5.12ms from Beijing, CN
202.113.129.38 AS4538 China Education and Research Network Center 4.65ms from Beijing, CN
202.113.135.227 AS4538 China Education and Research Network Center 4.23ms from Beijing, CN
202.113.140.65 AS4538 China Education and Research Network Center 4.79ms from Beijing, CN
202.113.139.1 AS4538 China Education and Research Network Center 6.20ms from Beijing, CN
202.113.137.43 AS4538 China Education and Research Network Center 4.18ms 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
4.180.80.164 AS8075 Microsoft Corporation 0.29ms from Amsterdam, NL
185.71.31.36 AS51621 Infoself Sistemes SL 0.17ms from Barcelona, ES
111.165.84.68 AS4837 CHINA UNICOM China169 Backbone 5.52ms from Beijing, CN
18.8.202.100 AS3 Massachusetts Institute of Technology 0.37ms from Boston, US
63.45.165.20 AS6167 Verizon Business 19.63ms from Chicago, US
34.132.233.244 AS396982 Google LLC 0.13ms from Council Bluffs, US
104.188.174.212 AS7018 AT&T Enterprises, LLC 7.82ms from Dallas, US
98.43.3.4 AS7922 Comcast Cable Communications, LLC 6.95ms from Denver, US
116.31.145.196 AS140308 CHINATELECOM Guangdong province Zhuhai 5G network 10.48ms from Guangzhou, CN
145.79.165.84 AS399073 BUNNY TECHNOLOGY LLC 0.35ms from Hong Kong, HK
77.44.26.116 AS5413 Wavenet Limited 5.08ms from London, GB
77.51.187.148 AS25515 PJSC Rostelecom 1.63ms from Moscow, RU
14.193.181.180 AS4721 JCOM Co., Ltd. 12.79ms from Tokyo, JP
134.194.254.36 AS289 Headquarters, USAISC 2.55ms from Ashburn, US
13.247.174.244 AS16509 Amazon.com, Inc. 0.11ms from Cape Town, ZA
24.208.161.100 AS10796 Charter Communications Inc 6.66ms from Columbus, US
85.226.240.52 AS2119 Telenor Norge AS 1.62ms from Copenhagen, DK
104.239.126.164 AS205659 UAB code200 0.55ms from Dallas, US
123.158.170.212 AS4837 CHINA UNICOM China169 Backbone 10.79ms from Hangzhou, CN
202.20.107.244 AS133166 PT Pertamina (Persero) 0.81ms from Jakarta, ID
103.154.196.20 AS141008 EFU LIFE Assurance Ltd 1.81ms from Karachi, PK
75.74.137.52 AS7922 Comcast Cable Communications, LLC 7.45ms from Miami, US
45.233.83.132 AS268192 WSNET Internet e Dados Ltda - EPP 1.17ms from Novo Hamburgo, BR
217.75.175.116 AS50624 Outscale SASU 1.28ms from Paris, FR
156.154.225.148 AS19905 Vercara, LLC 0.76ms from Sao Paulo, BR

Traceroute

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

$
traceroute -a -n -q1 -f4 -m17 202.113.134.175
traceroute to 202.113.134.175 (202.113.134.175): 17 hops max, 52 byte packets
4 [AS30475] 68.71.128.92 0.806 ms
5 *
6 *
7 *
8 [AS6939] 184.105.64.129 160.552 ms
9 [] 123.255.91.118 166.036 ms
10 [AS4538] 101.4.114.181 200.117 ms
11 *
12 *
13 [AS4538] 202.127.216.78 203.177 ms
14 [AS4538] 101.4.115.26 203.978 ms
15 *
16 *
17 *
Measurement taken from IPinfo ProbeNet in Greenwood Village, US
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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