202.204.144.0/20

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 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

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

IP Address	ASN	Details
202.204.144.255	AS4538 China Education and Research Network Center	`2.12ms` 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
87.208.17.228	AS50266 Odido Netherlands B.V.	`4.49ms` from Amsterdam, NL
47.134.206.148	AS20115 Charter Communications LLC	`12.59ms` from Atlanta, US
172.172.80.36	AS8075 Microsoft Corporation	`0.34ms` from Boydton, US
113.247.238.132	AS4134 CHINANET-BACKBONE	`1.23ms` from Changsha, CN
72.107.242.4	AS6167 Verizon Business	`16.73ms` from Dallas, US
152.117.75.116	AS30600 Metronet	`1.90ms` from Indianapolis, US
86.152.7.20	AS2856 British Telecommunications PLC	`7.06ms` from London, GB
81.106.205.68	AS5089 Virgin Media Limited	`9.29ms` from London, GB
94.5.69.212	AS5607 Sky UK Limited	`9.33ms` from London, GB
79.59.28.4	AS3269 Telecom Italia S.p.A.	`2.04ms` from Milan, IT
128.75.253.244	AS3216 PJSC "Vimpelcom"	`0.39ms` from Moscow, RU
154.62.114.180	AS215596 KISSGROUP SAS	`0.28ms` from Paris, FR
82.22.235.196	AS395092 Shock Hosting LLC	`0.15ms` from Piscataway, US
27.198.206.164	AS4837 CHINA UNICOM China169 Backbone	`7.59ms` from Qingdao, CN
125.154.114.132	AS4766 Korea Telecom	`2.25ms` from Seoul, KR
39.24.115.132	AS4766 Korea Telecom	`7.19ms` from Seoul, KR
20.58.150.52	AS8075 Microsoft Corporation	`0.67ms` from Sydney, AU
69.166.183.132	AS40749 CLARKSVILLE DEPARTMENT OF ELECTRICITY	`6.79ms` from Atlanta, US
123.243.238.116	AS7545 TPG Telecom Limited	`1.64ms` from Brisbane, AU
72.190.87.196	AS11427 Charter Communications Inc	`6.21ms` from Dallas, US
168.215.5.52	AS10753 Level 3 Parent, LLC	`1.51ms` from Denver, US
187.140.75.228	AS8151 UNINET	`5.55ms` from Guadalajara, MX
213.172.252.148	AS3212 Telemach Slovenija d.o.o.	`1.75ms` from Ljubljana, SI
104.0.169.132	AS7018 AT&T Enterprises, LLC	`2.27ms` from Miami, US
103.151.96.100	AS140641 YOTTA NETWORK SERVICES PRIVATE LIMITED	`0.17ms` 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 -m15 202.204.148.147

traceroute to 202.204.148.147 (202.204.148.147): 15 hops max, 52 byte packets

2 [AS53340] 192.228.109.93 337.278 ms

3 [AS53667] 198.251.87.1 0.26 ms

4 *

5 [AS6939] 184.104.193.177 8.581 ms

6 *

7 [] 123.255.91.118 158.353 ms

8 *

9 *

10 *

11 [AS4538] 101.4.112.98 165.619 ms

12 [AS4538] 101.4.113.229 174.459 ms

13 *

14 *

15 *

Measurement taken from

IPinfo ProbeNet in Las Vegas, US

On March 20th 2026

What are IP address ranges?

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