211.81.40.0/22
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: 211.81.0.0 - 211.82.255.255 netname: CERNET-CN descr: China Education and Research Network descr: Beijing Regional Network country: CN admin-c: JW1-CN tech-c: XL1-CN tech-c: SZ2-AP abuse-c: AC1685-AP status: ALLOCATED PORTABLE mnt-by: APNIC-HM mnt-lower: MAINT-CERNET-AP mnt-routes: MAINT-CERNET-AP mnt-irt: IRT-CERNET-AP last-modified: 2020-10-20T00:56:14Z 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 person: Jianping Wu address: China Education and Research Network Center address: Room 225, Main Building, Tsinghua University address: Beijing 100084 address: CN country: CN phone: +86-10-6278-5983 fax-no: +86-10-6278-5933 e-mail: jianping@cernet.edu.cn nic-hdl: JW1-CN mnt-by: MAINT-CERNET-AP last-modified: 2011-12-22T05:14:25Z source: APNIC person: Shuang Zhu address: China Education and Research Network Information Center address: Room 225, Main Building, Tsinghua University address: Beijing 100084, China country: CN phone: +86-10-6278-5931 fax-no: +86-10-6278-5933 e-mail: szhu@cernet.edu.cn nic-hdl: SZ2-AP mnt-by: MAINT-CERNET-AP last-modified: 2011-12-22T05:14:36Z source: APNIC person: Xing Li address: China Education and Research Network Center address: Room 225, Main Building, Tsinghua University address: Beijing 100084 address: CN country: CN phone: +86-10-6278-5983 fax-no: +86-10-6278-5933 e-mail: xing@cernet.edu.cn nic-hdl: XL1-CN mnt-by: MAINT-CERNET-AP last-modified: 2011-12-22T05:14:25Z 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 |
|---|---|---|
| 211.81.41.33 |
5.98ms from Beijing,
CN
|
|
| 211.81.43.31 |
5.71ms from Beijing,
CN
|
|
| 211.81.40.170 |
5.71ms from Beijing,
CN
|
|
| 211.81.42.80 |
5.75ms 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 |
|---|---|---|
| 114.31.144.150 |
7.61ms from Ahmedabad,
IN
|
|
| 41.36.23.214 |
7.02ms from Cairo,
EG
|
|
| 65.71.231.22 |
2.59ms from Dallas,
US
|
|
| 104.48.136.246 |
3.82ms from Dallas,
US
|
|
| 12.252.232.198 |
4.97ms from Durham,
US
|
|
| 43.100.28.198 |
0.64ms from Hong Kong,
HK
|
|
| 35.242.152.70 |
0.10ms from London,
GB
|
|
| 82.36.0.246 |
2.31ms from London,
GB
|
|
| 4.158.69.38 |
0.20ms from London,
GB
|
|
| 194.207.138.70 |
3.23ms from Manchester,
GB
|
|
| 51.155.20.38 |
0.98ms from Manchester,
GB
|
|
| 58.178.106.182 |
1.55ms from Melbourne,
AU
|
|
| 87.15.196.246 |
6.24ms from Milan,
IT
|
|
| 95.79.149.246 |
6.80ms from Moscow,
RU
|
|
| 60.181.63.150 |
8.08ms from Ningbo,
CN
|
|
| 73.131.75.70 |
17.57ms from Orlando,
US
|
|
| 112.248.0.134 |
7.61ms from Qingdao,
CN
|
|
| 195.189.30.150 |
0.74ms from Almaty,
KZ
|
|
| 24.41.43.86 |
0.46ms from Atlanta,
US
|
|
| 96.73.212.118 |
4.53ms from Atlanta,
US
|
|
| 121.18.33.22 |
9.52ms from Beijing,
CN
|
|
| 196.31.59.198 |
1.55ms from Johannesburg,
ZA
|
|
| 141.51.122.230 |
0.63ms from Kassel,
DE
|
|
| 156.252.158.38 |
0.33ms from Los Angeles,
US
|
|
| 86.51.188.214 |
2.92ms from Manama,
BH
|
Traceroute
Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.
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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