202.204.244.0/22

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 Center,
address:        FIT-3-220, 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:        abuse@cernet.edu.cn was validated on 2026-03-05
mnt-by:         MAINT-CERNET-AP
last-modified:  2026-03-05T06:39:56Z
source:         APNIC

role:           ABUSE CERNETAP
country:        ZZ
address:        Network Center,
address:        FIT-3-220, 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 2026-03-05
abuse-mailbox:  abuse@cernet.edu.cn
mnt-by:         APNIC-ABUSE
last-modified:  2026-03-05T06:40:20Z
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 202.204.0.0/16

No nearby ranges found.

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

Read more

Pingable IPs

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

IP Address	ASN	Details
202.204.245.155	AS4538 China Education and Research Network Center	`2.08ms` 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
49.50.230.198	AS55853 Megatel	`1.03ms` from Auckland, NZ
34.72.177.214	AS396982 Google LLC	`0.12ms` from Council Bluffs, US
113.187.73.134	AS45899 VNPT Corp	`2.27ms` from Ho Chi Minh City, VN
172.2.223.150	AS7018 AT&T Enterprises, LLC	`7.59ms` from Miami, US
77.244.90.6	AS42818 Axitea S.p.A.	`0.39ms` from Milan, IT
60.236.39.22	AS2518 BIGLOBE Inc.	`5.49ms` from Osaka, JP
185.97.146.134	AS47583 Hostinger International Limited	`0.51ms` from Paris, FR
46.109.55.22	AS12578 SIA Tet	`0.89ms` from Riga, LV
73.11.202.86	AS7922 Comcast Cable Communications, LLC	`11.99ms` from Seattle, US
123.140.222.22	AS3786 LG DACOM Corporation	`1.19ms` from Seoul, KR
14.200.43.230	AS7545 TPG Telecom Limited	`0.53ms` from Sydney, AU
126.150.38.118	AS17676 SoftBank Corp.	`3.22ms` from Tokyo, JP
180.23.208.6	AS4713 NTT DOCOMO BUSINESS,Inc.	`17.94ms` from Tokyo, JP
81.163.10.38	AS201725 Firma Tonetic Krzysztof Adamczyk	`8.18ms` from Warsaw, PL
62.141.162.22	AS20588 Forschungsverbund Berlin e.V.	`1.63ms` from Berlin, DE
73.211.174.54	AS7922 Comcast Cable Communications, LLC	`4.69ms` from Chicago, US
93.167.171.86	AS3292 TDC Holding A/S	`1.50ms` from Copenhagen, DK
122.231.1.38	AS4134 CHINANET BACKBONE	`3.95ms` from Hangzhou, CN
103.94.179.6	AS150869 National Citizen Commercial Joint stock bank	`0.49ms` from Hanoi, VN
109.157.92.214	AS2856 British Telecommunications PLC	`8.37ms` from London, GB
51.191.15.230	AS5607 Sky UK Limited	`8.53ms` from London, GB
170.10.146.6	AS33538 Mimecast North America Inc	`0.64ms` from Montreal, CA
142.105.209.6	AS11351 Charter Communications Inc	`14.47ms` from New York City, US
108.189.14.246	AS33363 Charter Communications, Inc	`9.56ms` from Orlando, US
79.18.116.54	AS3269 Telecom Italia S.p.A.	`7.51ms` from Rende, IT

Traceroute

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

traceroute -a -n -q1 -f2 -m12 202.204.246.27

traceroute to 202.204.246.27 (202.204.246.27): 12 hops max, 52 byte packets

2 [AS140599] 103.150.220.2 0.104 ms

3 *

4 [AS9658] 180.232.5.41 18.651 ms

5 [] 123.255.91.118 18.472 ms

6 *

7 *

8 *

9 [AS4538] 101.4.116.94 51.739 ms

10 *

11 *

12 *

Measurement taken from

IPinfo ProbeNet in Angeles City, PH

On April 13th 2026

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