202.112.237.0/24

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:         [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

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:         [email protected]
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:         [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

Overlapping Ranges

BGP prefixes that contain 202.112.237.0/24

Range	ASN	Company	Num of IPs
202.112.0.0/15	AS4538	China Education and Research Network	131,072

Nearby Ranges

BGP prefixes that overlap with 202.112.0.0/16

Range	ASN	Company	Num of IPs
202.112.0.0/15	AS4538	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

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Pingable IPs

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

IP Address	ASN	Details
202.112.237.37	AS4538 China Education and Research Network Center	`1.77ms` 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
136.61.36.72	AS16591 Google Fiber Inc.	`7.03ms` from Ashburn, US
99.89.44.8	AS7018 AT&T Enterprises, LLC	`17.90ms` from Chicago, US
216.68.247.24	AS6181 Cincinnati Bell Telephone Company LLC	`0.80ms` from Cincinnati, US
18.223.210.184	AS16509 Amazon.com, Inc.	`0.14ms` from Columbus, US
130.244.115.56	AS1257 Tele2 Sverige AB	`0.38ms` from Goeteborg, SE
58.176.138.168	AS9269 Hong Kong Broadband Network Ltd.	`1.24ms` from Hong Kong, HK
96.0.61.8	AS16509 Amazon.com, Inc.	`0.63ms` from Kolkata, IN
182.180.150.168	AS17557 Pakistan Telecommunication Company Limited	`2.96ms` from Lahore, PK
94.15.222.184	AS5607 Sky UK Limited	`6.47ms` from London, GB
63.206.130.56	AS7018 AT&T Enterprises, LLC	`2.46ms` from Los Angeles, US
73.24.151.72	AS7922 Comcast Cable Communications, LLC	`14.18ms` from Los Angeles, US
92.151.189.168	AS3215 Orange S.A.	`5.52ms` from Marseille, FR
91.175.206.168	AS12322 Free SAS	`2.95ms` from Paris, FR
39.113.83.120	AS9318 SK Broadband Co Ltd	`7.78ms` from Seoul, KR
180.101.196.168	AS138950 Jiangsu Wuxi International IDC network	`5.17ms` from Shanghai, CN
43.165.135.72	AS132203 Tencent Building, Kejizhongyi Avenue	`0.53ms` from Tokyo, JP
72.39.50.104	AS7992 Cogeco Connexion Inc.	`6.31ms` from Toronto, CA
62.45.85.88	AS15435 DELTA Fiber Nederland B.V.	`2.06ms` from Amsterdam, NL
31.220.26.88	AS39572 DataWeb Global Group B.V.	`0.25ms` from Amsterdam, NL
181.12.179.8	AS7303 Telecom Argentina S.A.	`1.45ms` from Buenos Aires, AR
107.5.72.136	AS7922 Comcast Cable Communications, LLC	`7.46ms` from Flint, US
212.58.224.136	AS2818 BBC	`0.20ms` from London, GB
147.147.249.72	AS6871 Plusnet	`2.24ms` from London, GB
108.27.232.168	AS701 Verizon Business	`2.41ms` from New York City, US
179.94.24.168	AS26599 TELEFÔNICA BRASIL S.A	`1.32ms` from Osasco, BR

Traceroute

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

traceroute -a -n -q1 -f3 202.112.237.168

traceroute to 202.112.237.168 (202.112.237.168): 64 hops max, 52 byte packets

3 [AS749] 11.254.129.145 0.968 ms

4 [AS749] 11.62.83.181 1.117 ms

5 *

6 [AS141679] 106.63.0.169 1.355 ms

7 [AS141679] 106.63.121.113 0.826 ms

8 *

9 *

10 *

11 *

12 [AS4538] 101.4.113.218 4.547 ms

13 *

14 [AS4538] 202.112.237.168 3.721 ms

Measurement taken from

IPinfo ProbeNet in Tianjin, CN

On December 6th 2025

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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