202.204.192.0/20

AS4538 · China Education and Research Network Center

Need more data or want to access it via API or data downloads? Sign up to get free access

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 2 domain names hosted across 2 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
202.204.194.16	cupacm.com	1
202.204.193.84	xn--fhqx9kxqhs8tltno74b.com	1

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

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

IP Address	ASN	Details
202.204.196.222	AS4538 China Education and Research Network Center	`3.74ms` from Beijing, CN
202.204.200.103	AS4538 China Education and Research Network Center	`3.49ms` from Beijing, CN
202.204.194.22	AS4538 China Education and Research Network Center	`3.79ms` from Beijing, CN
202.204.199.90	AS4538 China Education and Research Network Center	`3.76ms` from Beijing, CN
202.204.192.141	AS4538 China Education and Research Network Center	`3.66ms` from Beijing, CN
202.204.193.84	AS4538 China Education and Research Network Center	`3.76ms` 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
195.35.254.244	AS33915 Vodafone Libertel B.V.	`1.80ms` from Amsterdam, NL
51.225.127.20	AS16509 Amazon.com, Inc.	`1.04ms` from Berlin, DE
117.162.58.196	AS56045 China Mobile communications corporation	`6.76ms` from Changsha, CN
79.212.9.148	AS3320 Deutsche Telekom AG	`2.34ms` from Frankfurt am Main, DE
70.173.247.68	AS22773 Cox Communications Inc.	`9.61ms` from Los Angeles, US
128.186.50.4	AS2553 Florida State University	`10.37ms` from Miami, US
130.245.163.20	AS5719 State University of New York at Stony Brook	`2.92ms` from New York City, US
91.46.18.228	AS3320 Deutsche Telekom AG	`5.81ms` from Nuernberg, DE
150.31.164.148	AS2497 Internet Initiative Japan Inc.	`1.50ms` from Osaka, JP
177.54.156.36	AS262287 Latitude.sh LTDA	`0.10ms` from Sao Paulo, BR
121.218.141.68	AS1221 Telstra Limited	`3.90ms` from Sydney, AU
14.3.33.68	AS4685 Asahi Net	`3.28ms` from Tokyo, JP
178.226.158.116	AS50266 Odido Netherlands B.V.	`5.12ms` from Amsterdam, NL
216.206.222.244	AS209 CenturyLink Communications, LLC	`12.59ms` from Ashburn, US
69.138.94.212	AS7922 Comcast Cable Communications, LLC	`8.58ms` from Ashburn, US
52.34.10.132	AS16509 Amazon.com, Inc.	`0.19ms` from Boardman, US
213.214.56.100	AS6848 Telenet BV	`1.74ms` from Brussels, BE
188.182.242.36	AS3292 TDC Holding A/S	`1.18ms` from Copenhagen, DK
115.97.114.132	AS17488 Hathway IP Over Cable Internet	`1.60ms` from Delhi, IN
24.5.255.4	AS7922 Comcast Cable Communications, LLC	`6.93ms` from Fremont, US
195.80.24.4	AS34442 BNW TECHNOLOGY LTD	`0.30ms` from London, GB
212.195.222.4	AS5410 Bouygues Telecom SA	`7.79ms` from Marseille, FR
76.68.161.68	AS577 Bell Canada	`2.46ms` from Montreal, CA
58.215.106.244	AS23650 AS Number for CHINANET jiangsu province backbone	`3.58ms` from Nanjing, CN
68.133.74.228	AS701 Verizon Business	`9.75ms` from New York City, US

Traceroute

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

traceroute -a -n -q1 -f8 202.204.193.10

traceroute to 202.204.193.10 (202.204.193.10): 64 hops max, 52 byte packets

8 [AS4538] 101.4.116.90 4.248 ms

9 [AS4808] 61.50.142.26 4.205 ms

10 *

11 [AS4538] 202.204.193.10 4.947 ms

Measurement taken from

IPinfo ProbeNet in Beijing, CN

On March 21st 2026

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.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

An API built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

Get Started for Free Contact Sales