202.204.128.0/20
AS4538 · China Education and Research Network Center
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| 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: 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: http://www.ccert.edu.cn remarks: abuse@cernet.edu.cn 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: 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 2025-08-15 abuse-mailbox: abuse@cernet.edu.cn 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: 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
Hosted domains
There are 6 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 |
|---|---|---|
| 202.204.128.161 | bfsucestudies.com | 5 |
| 202.204.128.97 | bfsutw.com.cn | 1 |
Hosted domains API
Pingable IPs
278 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.
| IP Address | ASN | Details |
|---|---|---|
| 202.204.139.33 |
1.95ms from Beijing,
CN
|
|
| 202.204.129.161 |
2.73ms from Beijing,
CN
|
|
| 202.204.128.139 |
3.18ms 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 |
|---|---|---|
| 107.127.96.4 |
3.19ms from Ashburn,
US
|
|
| 73.236.25.100 |
9.02ms from Ashburn,
US
|
|
| 172.206.71.20 |
0.35ms from Boydton,
US
|
|
| 75.189.243.52 |
12.13ms from Charlotte,
US
|
|
| 65.28.178.148 |
6.72ms from Chicago,
US
|
|
| 3.252.129.20 |
0.48ms from Dublin,
IE
|
|
| 88.206.212.68 |
3.86ms from Goeteborg,
SE
|
|
| 72.174.144.84 |
7.79ms from Greenwood Village,
US
|
|
| 82.181.62.164 |
4.02ms from Helsinki,
FI
|
|
| 221.1.37.20 |
4.47ms from Jinan,
CN
|
|
| 3.174.136.36 |
0.14ms from Johannesburg,
ZA
|
|
| 84.68.184.68 |
3.52ms from London,
GB
|
|
| 23.225.149.52 |
0.28ms from Los Angeles,
US
|
|
| 97.238.86.228 |
11.52ms from Manassas,
US
|
|
| 212.104.16.132 |
0.32ms from Milan,
IT
|
|
| 203.206.251.244 |
1.06ms from Perth,
AU
|
|
| 151.53.182.148 |
4.78ms from Rome,
IT
|
|
| 13.72.224.20 |
0.71ms from Sydney,
AU
|
|
| 68.189.245.52 |
11.00ms from Washington,
US
|
|
| 62.54.13.100 |
0.57ms from Berlin,
DE
|
|
| 35.166.71.52 |
0.12ms from Boardman,
US
|
|
| 34.210.7.68 |
0.16ms from Boardman,
US
|
|
| 209.85.199.116 |
0.22ms from Chang-hua,
TW
|
|
| 75.186.73.180 |
12.66ms from Cleveland,
US
|
|
| 66.218.182.68 |
1.98ms from Cleveland,
US
|
Traceroute
Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.
IPinfo ProbeNet
in Abu Dhabi, AE
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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