202.117.240.0/20

AS4538 · China Education and Research Network Center

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Summary

Country	China
Domain	cernet.edu.cn
ASN	AS4538
Registry	APNIC
ID	CERNET-CN

WHOIS Details

inetnum:        202.112.0.0 - 202.121.255.255
netname:        CERNET-CN
descr:          China Education and Research Network
descr:          China Education and Research Network Center
descr:          Tsinghua University
descr:          Beijing, 100084
country:        CN
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:  2020-09-03T09:16:29Z
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

Nearby Ranges

BGP prefixes that overlap with 202.117.0.0/16

No nearby ranges found.

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

Read more

Pingable IPs

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

IP Address	ASN	Details
202.117.240.18	AS4538 China Education and Research Network Center	`20.12ms` 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
104.165.206.164	AS214238 HOST TELECOM LTD	`1.95ms` from Amsterdam, NL
175.29.13.132	AS29802 HIVELOCITY, Inc.	`0.63ms` from Amsterdam, NL
190.183.166.180	AS20207 Gigared S.A.	`15.17ms` from Buenos Aires, AR
175.6.120.68	AS63835 CT-HuNan-Changsha-IDC	`0.21ms` from Changsha, CN
52.212.31.4	AS16509 Amazon.com, Inc.	`0.11ms` from Dublin, IE
91.212.103.148	AS202656 Ivanov Vitaliy Sergeevich	`0.22ms` from Frankfurt am Main, DE
120.41.249.164	AS4134 CHINANET-BACKBONE	`6.59ms` from Fuzhou, CN
122.170.255.52	AS24560 Bharti Airtel Ltd., Telemedia Services	`1.61ms` from Lohogaon, IN
101.186.188.164	AS1221 Telstra Limited	`7.04ms` from Melbourne, AU
76.26.173.164	AS7922 Comcast Cable Communications, LLC	`8.93ms` from Miami, US
80.93.135.116	AS21056 Vianova S.p.A	`15.06ms` from Milan, IT
217.61.51.180	AS31034 Aruba S.p.A.	`1.17ms` from Milan, IT
212.183.171.148	AS41497 INTRED S.P.A.	`2.38ms` from Milan, IT
61.194.10.84	AS2514 NTT PC Communications, Inc.	`2.36ms` from Osaka, JP
213.6.181.244	AS12975 PALTEL Autonomous System	`0.40ms` from Ramallah, PS
39.114.212.4	AS9318 SK Broadband Co Ltd	`9.62ms` from Seoul, KR
122.121.221.20	AS3462 Data Communication Business Group	`4.18ms` from Taichung, TW
86.84.239.20	AS1136 KPN B.V.	`2.27ms` from Amsterdam, NL
63.67.161.68	AS701 Verizon Business	`10.47ms` from Ashburn, US
188.4.187.180	AS1241 Forthnet	`1.36ms` from Athens, GR
195.37.175.52	AS680 Verein zur Foerderung eines Deutschen Forschungsnetzes e.V.	`2.37ms` from Berlin, DE
41.44.106.228	AS8452 TE-AS	`6.34ms` from Cairo, EG
20.25.211.68	AS8075 Microsoft Corporation	`0.35ms` from Chicago, US
57.150.98.4	AS8075 Microsoft Corporation	`0.38ms` from Dublin, IE
2.223.30.164	AS5607 Sky UK Limited	`4.47ms` from Erith, GB

Traceroute

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

traceroute -a -n -q1 -f8 202.117.240.4

traceroute to 202.117.240.4 (202.117.240.4): 64 hops max, 52 byte packets

8 [AS4538] 101.4.112.14 20.162 ms

9 *

10 *

11 [AS4538] 202.200.29.130 20.105 ms

12 *

13 *

14 *

15 [AS4538] 202.117.240.2 21.063 ms

16 [AS4538] 202.117.240.4 21.014 ms

Measurement taken from

IPinfo ProbeNet in Beijing, CN

On December 14th 2025

What are IP address ranges?

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