202.205.208.0/20

AS4538 · China Education and Research Network Center

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Summary

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

WHOIS Details

inetnum:        202.204.0.0 - 202.207.255.255
netname:        BJR-CERNET
descr:          China Education and Research Network
descr:          Beijing Regional Network
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:  2020-09-03T09:16:26Z
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 202.205.0.0/16

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

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

IP Address	ASN	Details
202.205.208.45	AS4538 China Education and Research Network Center	`8.64ms` from Jining, 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
68.33.87.132	AS7922 Comcast Cable Communications, LLC	`8.81ms` from Ashburn, US
16.144.51.84	AS16509 Amazon.com, Inc.	`0.18ms` from Boardman, US
189.36.244.196	AS270795 LD telecom	`2.33ms` from Curitiba, BR
217.85.153.180	AS3320 Deutsche Telekom AG	`8.17ms` from Frankfurt am Main, DE
213.173.160.84	AS8220 COLT Technology Services Group Limited	`0.52ms` from Geneve, CH
154.223.234.84	AS214143 SKYDIGITAL TELECOM LTD	`0.30ms` from Kuala Lumpur, MY
152.232.57.4	AS55286 B2 Net Solutions Inc.	`0.47ms` from Los Angeles, US
68.232.237.68	AS12042 Fidium	`6.29ms` from Minneapolis, US
71.212.38.84	AS209 CenturyLink Communications, LLC	`1.77ms` from Seattle, US
196.51.230.228	AS400463 DynaNode LLC	`0.63ms` from Seattle, US
211.169.68.212	AS3786 LG DACOM Corporation	`1.56ms` from Seoul, KR
151.234.2.228	AS58224 Iran Telecommunication Company PJS	`11.33ms` from Yerevan, AM
170.84.172.4	AS263717 SOL TELECOMUNICACIONES S.A.	`5.90ms` from Asuncion, PY
193.161.7.4	AS25460 The Networking People (TNP) Limited	`7.43ms` from London, GB
16.26.24.244	AS16509 Amazon.com, Inc.	`0.56ms` from Melbourne, AU
80.117.81.52	AS3269 Telecom Italia S.p.A.	`3.70ms` from Milan, IT
173.61.155.36	AS701 Verizon Business	`3.67ms` from New York City, US
70.66.137.212	AS6327 Shaw Communications	`5.52ms` from Seattle, US
24.22.237.132	AS7922 Comcast Cable Communications, LLC	`4.45ms` from Seattle, US
114.46.228.132	AS3462 Data Communication Business Group	`3.31ms` from Taichung, TW
31.146.14.244	AS35805 JSC Silknet	`4.18ms` from Tbilisi, GE
57.180.31.52	AS16509 Amazon.com, Inc.	`0.17ms` from Tokyo, JP
75.88.107.20	AS7029 Windstream Communications LLC	`10.73ms` from Atlanta, US
67.191.136.116	AS7922 Comcast Cable Communications, LLC	`5.35ms` from Atlanta, US
41.38.37.84	AS8452 TE-AS	`3.50ms` from Cairo, EG

Traceroute

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

traceroute -a -n -q1 -f6 -m17 202.205.214.62

traceroute to 202.205.214.62 (202.205.214.62): 17 hops max, 52 byte packets

6 [AS6939] 184.105.65.35 8.34 ms

7 *

8 *

9 *

10 [] 123.255.91.118 266.737 ms

11 [AS4538] 101.4.114.181 268.912 ms

12 *

13 *

14 [AS4538] 101.4.112.98 270.434 ms

15 *

16 *

17 *

Measurement taken from

IPinfo ProbeNet in Amsterdam, NL

On December 28th 2025

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