202.204.32.0/20

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 202.204.0.0/16

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
202.204.32.58 fydc973.com 1
202.204.38.124 fangnet.org 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

Pingable IPs

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

IP Address ASN Details
202.204.43.224 AS4538 China Education and Research Network Center 4.54ms from Beijing, CN
202.204.42.208 AS4538 China Education and Research Network Center 4.58ms from Beijing, CN
202.204.38.166 AS4538 China Education and Research Network Center 3.86ms from Beijing, CN
202.204.33.42 AS4538 China Education and Research Network Center 3.93ms from Beijing, CN
202.204.35.214 AS4538 China Education and Research Network Center 5.11ms from Beijing, CN
202.204.46.1 AS4538 China Education and Research Network Center 4.04ms from Beijing, CN
202.204.45.244 AS4538 China Education and Research Network Center 5.22ms from Beijing, CN
202.204.32.165 AS4538 China Education and Research Network Center 5.28ms from Beijing, CN
202.204.47.19 AS4538 China Education and Research Network Center 3.16ms 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
129.190.126.228 AS89 Navy Network Information Center (NNIC) 2.66ms from Ashburn, US
197.96.242.228 AS3741 Dimension Data 0.52ms from Johannesburg, ZA
49.145.190.244 AS9299 Philippine Long Distance Telephone Company 13.85ms from Manila, PH
109.235.108.36 AS15433 Telecom Italia San Marino S.p.A 6.65ms from Milan, IT
80.16.192.180 AS3269 Telecom Italia S.p.A. 0.93ms from Milan, IT
100.50.182.196 AS14618 Amazon.com, Inc. 0.20ms from Reston, US
79.56.137.36 AS3269 Telecom Italia S.p.A. 4.86ms from Rome, IT
116.193.155.4 AS138195 MOACK.Co.LTD 0.99ms from Seoul, KR
125.179.125.244 AS17858 LG POWERCOMM 1.80ms from Seoul, KR
5.20.228.20 AS21412 UAB "Cgates" 0.55ms from Vilnius, LT
91.1.89.212 AS3320 Deutsche Telekom AG 4.22ms from Berlin, DE
99.97.14.228 AS7018 AT&T Enterprises, LLC 16.75ms from Chicago, US
24.2.3.164 AS7922 Comcast Cable Communications, LLC 11.56ms from Chicago, US
34.72.43.244 AS396982 Google LLC 0.11ms from Council Bluffs, US
204.57.68.164 AS46413 Fulair, LLC 12.76ms from Dallas, US
18.201.166.68 AS16509 Amazon.com, Inc. 0.54ms from Dublin, IE
3.124.222.244 AS16509 Amazon.com, Inc. 0.15ms from Frankfurt am Main, DE
154.92.252.100 AS9294 GNET INC. 0.90ms from Hong Kong, HK
3.175.135.180 AS16509 Amazon.com, Inc. 0.12ms from Manama, BH
46.161.7.164 AS212128 LLC "HORIZON" 0.12ms from Saint Petersburg, RU
223.221.244.100 AS140061 Qinghai Telecom 0.27ms from Xining, CN
142.173.128.20 AS7029 Windstream Communications LLC 0.74ms from Ashburn, US
58.136.170.244 AS133481 AIS Fibre 10.54ms from Bangkok, TH
78.137.54.84 AS25133 LLC "McLaut-Invest" 3.09ms from Kyiv, UA
145.221.216.116 AS15625 ING Bank N.V. 8.86ms from London, GB

Traceroute

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

$
traceroute -a -n -q1 -m13 202.204.44.147
traceroute to 202.204.44.147 (202.204.44.147): 13 hops max, 52 byte packets
2 *
3 *
4 [AS3491] 63.218.115.14 210.964 ms
5 *
6 [AS4538] 101.4.114.169 255.664 ms
7 *
8 *
9 *
10 [AS4538] 202.204.47.18 265.535 ms
11 *
12 *
13 *
Measurement taken from IPinfo ProbeNet in London, GB
On

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.

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