211.81.0.0/17
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 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 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: [email protected] 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: [email protected] 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: [email protected] nic-hdl: XL1-CN mnt-by: MAINT-CERNET-AP last-modified: 2011-12-22T05:14:25Z source: APNIC
Hosted domains
There are 5 domain names hosted across 5 IP addresses on this ASN. Checkout our API to access full domain hosting information.
| IP Address | Domain | Domains on this IP |
|---|---|---|
| 211.81.36.3 | xn--fiqv8jw4h1r3b.xn--fiqs8s | 1 |
Hosted domains API
Pingable IPs
75 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.
| IP Address | ASN | Details |
|---|---|---|
| 211.81.52.201 |
6.72ms from Beijing,
CN
|
|
| 211.81.63.5 |
6.94ms from Beijing,
CN
|
|
| 211.81.72.254 |
27.66ms from Tianjin,
CN
|
|
| 211.81.41.33 |
6.00ms from Beijing,
CN
|
|
| 211.81.20.200 |
5.03ms from Beijing,
CN
|
|
| 211.81.21.196 |
5.80ms from Beijing,
CN
|
|
| 211.81.31.52 |
5.75ms from Beijing,
CN
|
|
| 211.81.60.5 |
6.24ms from Tianjin,
CN
|
|
| 211.81.49.174 |
5.52ms from Beijing,
CN
|
|
| 211.81.50.162 |
5.68ms from Beijing,
CN
|
|
| 211.81.96.33 |
18.62ms from Tianjin,
CN
|
|
| 211.81.43.31 |
5.71ms from Beijing,
CN
|
|
| 211.81.55.148 |
6.11ms from Beijing,
CN
|
|
| 211.81.40.10 |
5.63ms from Beijing,
CN
|
|
| 211.81.56.26 |
6.05ms from Beijing,
CN
|
|
| 211.81.42.108 |
5.71ms 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 |
|---|---|---|
| 83.87.158.1 |
1.85ms from Amsterdam,
NL
|
|
| 178.84.6.1 |
3.75ms from Amsterdam,
NL
|
|
| 67.145.136.1 |
12.54ms from Ashburn,
US
|
|
| 173.26.34.1 |
10.22ms from Atlanta,
US
|
|
| 168.26.214.1 |
2.86ms from Atlanta,
US
|
|
| 96.61.119.113 |
9.90ms from Atlanta,
US
|
|
| 203.152.18.81 |
0.50ms from Bangkok,
TH
|
|
| 216.7.53.33 |
8.14ms from Bend,
US
|
|
| 190.195.158.1 |
1.52ms from Buenos Aires,
AR
|
|
| 154.236.208.1 |
17.22ms from Cairo,
EG
|
|
| 108.69.116.1 |
6.70ms from Columbus,
US
|
|
| 70.125.249.145 |
6.58ms from Dallas,
US
|
|
| 153.33.212.1 |
9.43ms from Dallas,
US
|
|
| 115.241.183.145 |
9.17ms from Delhi,
IN
|
|
| 87.146.58.113 |
5.66ms from Duesseldorf,
DE
|
|
| 68.36.4.1 |
7.21ms from Flint,
US
|
|
| 93.230.182.49 |
7.13ms from Frankfurt am Main,
DE
|
|
| 195.176.154.129 |
0.70ms from Geneve,
CH
|
|
| 122.237.72.193 |
9.05ms from Hangzhou,
CN
|
|
| 117.147.167.193 |
4.19ms from Hangzhou,
CN
|
|
| 123.18.132.1 |
6.20ms from Hanoi,
VN
|
|
| 111.42.107.129 |
16.08ms from Harbin,
CN
|
|
| 91.197.210.1 |
1.29ms from Helsinki,
FI
|
|
| 207.226.219.97 |
1.03ms from Hong Kong,
HK
|
|
| 203.175.185.1 |
0.85ms from Hyderabad,
IN
|
Traceroute
Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.
IPinfo ProbeNet
in Sandefjord, NO
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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