202.121.81.0/24
AS4538 · China Education and Research Network Center
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| Country |
China
|
| Domain | cernet.edu.cn |
| ASN | AS4538 |
| Registry | APNIC |
| ID | CERNET-CN |
WHOIS Details
inetnum: 202.112.0.0 - 202.121.255.255 netname: CERNET-CN descr: China Education and Research Network descr: China Education and Research Network Center descr: Tsinghua University descr: Beijing, 100084 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: 2020-09-03T09:16:29Z 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 no domains currently hosted on this ASN.
Hosted domains API
Pingable IPs
14 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.
| IP Address | ASN | Details |
|---|---|---|
| 202.121.81.198 |
2.52ms from Shanghai,
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 |
|---|---|---|
| 190.51.175.72 |
2.15ms from Buenos Aires,
AR
|
|
| 67.215.252.24 |
0.17ms from Buffalo,
US
|
|
| 14.174.93.152 |
5.82ms from Da Nang,
VN
|
|
| 125.177.142.24 |
2.22ms from Incheon,
KR
|
|
| 111.61.115.136 |
6.75ms from Jinan,
CN
|
|
| 213.177.239.184 |
0.37ms from London,
GB
|
|
| 45.87.124.152 |
0.23ms from Los Angeles,
US
|
|
| 121.171.189.72 |
0.99ms from Seoul,
KR
|
|
| 74.226.246.152 |
0.16ms from Tokyo,
JP
|
|
| 73.40.117.88 |
8.90ms from Ashburn,
US
|
|
| 73.22.37.216 |
5.52ms from Chicago,
US
|
|
| 66.68.138.216 |
11.22ms from Dallas,
US
|
|
| 89.252.159.248 |
0.13ms from Denizli,
TR
|
|
| 103.108.144.248 |
4.98ms from Dhaka,
BD
|
|
| 79.227.162.40 |
4.01ms from Duesseldorf,
DE
|
|
| 191.10.18.24 |
7.47ms from Fortaleza,
BR
|
|
| 84.132.5.72 |
7.53ms from Frankfurt am Main,
DE
|
|
| 191.98.185.104 |
0.29ms from Lima,
PE
|
|
| 79.169.49.56 |
7.07ms from Lisbon,
PT
|
|
| 217.16.210.40 |
14.16ms from London,
GB
|
|
| 138.73.110.152 |
16.03ms from Montreal,
CA
|
|
| 109.161.118.200 |
11.16ms from Moscow,
RU
|
|
| 79.248.98.168 |
6.22ms from Nuernberg,
DE
|
|
| 103.210.87.168 |
7.85ms from Osaka,
JP
|
|
| 153.215.249.216 |
7.11ms from Osaka,
JP
|
Traceroute
Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.
IPinfo ProbeNet
in Santo Domingo, DO
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.
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