202.117.200.0/21

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:         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:  2025-11-18T00:26:28Z
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:         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

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

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Pingable IPs

No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

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
20.42.116.37	AS8075 Microsoft Corporation	`0.55ms` from Ashburn, US
89.195.253.53	AS8011 MongoDB, Inc.	`0.10ms` from Boardman, US
4.152.219.165	AS8075 Microsoft Corporation	`0.18ms` from Boydton, US
198.169.8.165	AS395404 SEAKR Engineering, LLC	`1.51ms` from Denver, US
3.74.176.197	AS16509 Amazon.com, Inc.	`0.19ms` from Frankfurt am Main, DE
37.24.143.101	AS3209 Vodafone GmbH	`7.58ms` from Frankfurt am Main, DE
189.162.218.101	AS8151 UNINET	`4.20ms` from Guadalajara, MX
58.216.86.245	AS4134 CHINANET-BACKBONE	`5.45ms` from Huai'an, CN
109.251.1.229	AS31148 Freenet LTD	`0.54ms` from Kyiv, UA
81.148.206.5	AS2856 British Telecommunications PLC	`3.67ms` from London, GB
65.124.43.53	AS209 CenturyLink Communications, LLC	`5.05ms` from Miami, US
5.23.51.101	AS9123 JSC "TIMEWEB"	`0.39ms` from Saint Petersburg, RU
23.252.60.165	AS54858 Wave Broadband	`0.21ms` from Seattle, US
126.36.109.149	AS17676 SoftBank Corp.	`7.45ms` from Tokyo, JP
194.36.28.197	AS201735 PROPHASE ELECTRONICS, S.L.	`4.61ms` from Valencia, ES
73.10.134.133	AS7922 Comcast Cable Communications, LLC	`7.76ms` from Ashburn, US
102.185.220.53	AS24835 Vodafone Data	`10.10ms` from Cairo, EG
129.250.45.181	AS2914 NTT America, Inc.	`0.21ms` from Dallas, US
130.131.169.5	AS8075 Microsoft Corporation	`0.17ms` from Des Moines, US
84.172.110.69	AS3320 Deutsche Telekom AG	`5.79ms` from Frankfurt am Main, DE
8.223.55.229	AS45102 Alibaba (US) Technology Co., Ltd.	`0.96ms` from Hong Kong, HK
82.13.206.149	AS5089 Virgin Media Limited	`10.80ms` from London, GB
92.150.8.245	AS3215 Orange S.A.	`2.60ms` from Marseille, FR
178.20.239.213	AS49063 Data Storage Center JSC	`0.87ms` from Moscow, RU
13.203.230.69	AS16509 Amazon.com, Inc.	`0.40ms` from Mumbai, IN

Traceroute

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

traceroute -a -n -q1 -f2 -m13 202.117.200.236

traceroute to 202.117.200.236 (202.117.200.236): 13 hops max, 52 byte packets

2 [AS140599] 103.150.220.2 0.054 ms

3 [AS9658] 116.50.176.233 21.792 ms

4 [AS9658] 120.89.7.154 17.647 ms

5 [] 123.255.91.118 18.756 ms

6 *

7 *

8 [AS4538] 101.4.117.81 55.47 ms

9 [AS4538] 101.4.115.249 74.015 ms

10 [AS4538] 101.4.112.14 97.003 ms

11 *

12 *

13 *

Measurement taken from

IPinfo ProbeNet in Angeles City, PH

On November 14th 2025

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