211.81.40.0/24
AS4538 · China Education and Research Network Center
Need more data or want to access it via API or data downloads? Sign up to get free access
Sign up for free ›Summary
| 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
1 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.
| IP Address | ASN | Details |
|---|---|---|
| 211.81.40.121 |
5.76ms 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 |
|---|---|---|
| 104.182.207.248 |
1.21ms from Atlanta,
US
|
|
| 201.176.220.184 |
1.82ms from Buenos Aires,
AR
|
|
| 192.77.115.72 |
5.80ms from Frankfurt am Main,
DE
|
|
| 1.238.181.136 |
1.74ms from Incheon,
KR
|
|
| 81.158.203.104 |
10.86ms from London,
GB
|
|
| 216.87.238.40 |
13.15ms from Seattle,
US
|
|
| 186.210.103.152 |
5.71ms from Uberlandia,
BR
|
|
| 79.185.222.200 |
19.23ms from Warsaw,
PL
|
|
| 101.75.106.104 |
12.77ms from Beijing,
CN
|
|
| 97.118.70.136 |
8.34ms from Denver,
US
|
|
| 91.53.4.168 |
3.36ms from Frankfurt am Main,
DE
|
|
| 79.220.90.232 |
2.32ms from Frankfurt am Main,
DE
|
|
| 178.254.2.152 |
0.35ms from Frankfurt am Main,
DE
|
|
| 1.55.115.120 |
3.84ms from Ho Chi Minh City,
VN
|
|
| 14.183.66.248 |
6.31ms from Ho Chi Minh City,
VN
|
|
| 157.245.125.24 |
0.33ms from New York City,
US
|
|
| 54.162.213.232 |
0.22ms from Reston,
US
|
|
| 75.132.153.136 |
6.40ms from St. Louis,
US
|
|
| 34.76.20.56 |
0.15ms from Brussels,
BE
|
|
| 186.57.130.248 |
1.99ms from Buenos Aires,
AR
|
|
| 187.147.148.184 |
12.25ms from Cancún,
MX
|
|
| 82.9.77.8 |
9.66ms from Dublin,
IE
|
|
| 128.171.159.248 |
3.43ms from Honolulu,
US
|
|
| 182.214.90.200 |
1.73ms from Incheon,
KR
|
|
| 14.80.28.184 |
6.00ms from Incheon,
KR
|
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.
An API built with users in mind: reliable, accurate, and easy-to-use
Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.
Our IP tools
Explore all toolsSummarize IPs
Use our data visualization tool to create a visual overview of multiple IPs.
Try Summarize IPs