202.121.64.0/20
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 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 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 is 1 domain name hosted across 2 IP addresses on this ASN. Checkout our API to access full domain hosting information.
| IP Address | Domain | Domains on this IP |
|---|---|---|
| 202.121.64.7 | shou.edu.cn | 1 |
| 202.121.64.9 | shou.edu.cn | 1 |
Hosted domains API
Pingable IPs
43 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.
| IP Address | ASN | Details |
|---|---|---|
| 202.121.64.114 |
3.43ms from Shanghai,
CN
|
|
| 202.121.66.72 |
3.65ms 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 |
|---|---|---|
| 130.161.252.4 |
1.57ms from Amsterdam,
NL
|
|
| 13.224.195.100 |
0.16ms from Athens,
GR
|
|
| 207.50.52.68 |
11.31ms from Atlanta,
US
|
|
| 94.189.231.148 |
8.85ms from Belgrade,
RS
|
|
| 73.2.140.212 |
12.63ms from Dallas,
US
|
|
| 116.19.201.196 |
4.67ms from Guangzhou,
CN
|
|
| 204.62.111.180 |
7.84ms from Los Angeles,
US
|
|
| 216.209.188.84 |
4.79ms from Montreal,
CA
|
|
| 180.101.101.20 |
5.79ms from Nanjing,
CN
|
|
| 128.253.115.196 |
6.19ms from New York City,
US
|
|
| 114.150.42.116 |
11.60ms from Osaka,
JP
|
|
| 91.238.194.4 |
0.28ms from Piscataway,
US
|
|
| 54.215.93.180 |
0.16ms from San Jose,
US
|
|
| 126.217.91.68 |
3.00ms from Tokyo,
JP
|
|
| 98.85.180.84 |
0.47ms from Ashburn,
US
|
|
| 24.2.115.196 |
11.70ms from Ashburn,
US
|
|
| 120.5.1.36 |
10.36ms from Beijing,
CN
|
|
| 104.46.112.100 |
0.29ms from Boydton,
US
|
|
| 122.140.33.52 |
6.84ms from Changchun,
CN
|
|
| 50.102.71.244 |
12.38ms from Chicago,
US
|
|
| 123.26.87.116 |
2.93ms from Da Nang,
VN
|
|
| 135.196.135.116 |
0.26ms from Dallas,
US
|
|
| 208.190.238.196 |
17.99ms from Dallas,
US
|
|
| 173.29.214.196 |
10.89ms from Fremont,
US
|
|
| 113.1.50.148 |
8.07ms from Harbin,
CN
|
Traceroute
Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.
IPinfo ProbeNet
in Medan, ID
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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