121.195.12.0/23
AS4538 · China Education and Research Network Center
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| Country |
China
|
| Domain | cernet.edu.cn |
| ASN | AS4538 |
| Parent Range | 121.194.0.0/15 |
| Registry | APNIC |
| ID | BJR-CERNET |
WHOIS Details
inetnum: 121.194.0.0 - 121.195.255.255 netname: BJR-CERNET descr: China Education and Research Network descr: Beijing Regional Network country: CN admin-c: CER-AP tech-c: CER-AP abuse-c: AC1685-AP status: ALLOCATED PORTABLE remarks: origin AS4538 remarks: confederation mnt-by: APNIC-HM mnt-lower: MAINT-CERNET-AP mnt-routes: MAINT-CERNET-AP mnt-irt: IRT-CERNET-AP last-modified: 2020-09-03T09:16:22Z 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 route: 121.194.0.0/16 descr: CERNET origin: AS4538 mnt-by: MAINT-CERNET-AP last-modified: 2009-01-05T03:10:57Z source: APNIC
Overlapping Ranges
BGP prefixes that contain 121.195.12.0/23
| Range | ASN | Company | Num of IPs |
|---|---|---|---|
| 121.194.0.0/15 | AS4538 | China Education and Research Network | 131,072 |
Nearby Ranges
BGP prefixes that overlap with 121.195.0.0/16
| Range | ASN | Company | Num of IPs |
|---|---|---|---|
| 121.194.0.0/15 | AS4538 | China Education and Research Network | 131,072 |
Hosted domains
There are no domains currently hosted on this ASN.
Hosted domains API
Pingable IPs
No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.
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 |
|---|---|---|
| 131.106.131.103 |
5.49ms from Ashburn,
US
|
|
| 20.102.65.119 |
0.40ms from Ashburn,
US
|
|
| 91.132.149.199 |
2.20ms from Astana,
KZ
|
|
| 69.73.131.183 |
0.47ms from Atlanta,
US
|
|
| 113.162.248.23 |
1.99ms from Hanoi,
VN
|
|
| 39.59.69.39 |
14.13ms from Lahore,
PK
|
|
| 86.12.229.119 |
5.14ms from London,
GB
|
|
| 73.113.52.103 |
15.10ms from Murfreesboro,
US
|
|
| 74.90.248.39 |
6.91ms from New York City,
US
|
|
| 108.41.154.23 |
2.50ms from New York City,
US
|
|
| 119.216.239.87 |
6.73ms from Seoul,
KR
|
|
| 118.39.188.231 |
7.06ms from Seoul,
KR
|
|
| 1.246.221.103 |
3.13ms from Seoul,
KR
|
|
| 110.13.78.55 |
7.19ms from Seoul,
KR
|
|
| 4.204.224.199 |
0.19ms from Toronto,
CA
|
|
| 52.205.178.71 |
0.55ms from Ashburn,
US
|
|
| 61.128.222.135 |
1.94ms from Chongqing,
CN
|
|
| 87.164.117.103 |
4.84ms from Duesseldorf,
DE
|
|
| 185.230.68.103 |
1.23ms from Frankfurt am Main,
DE
|
|
| 18.134.54.215 |
0.18ms from London,
GB
|
|
| 2.123.40.151 |
13.12ms from London,
GB
|
|
| 34.100.104.183 |
1.14ms from Tokyo,
JP
|
|
| 97.74.102.23 |
0.16ms from Tokyo,
JP
|
|
| 73.87.28.183 |
5.76ms from Ashburn,
US
|
|
| 74.114.119.199 |
0.20ms from Chicago,
US
|
Traceroute
Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.
IPinfo ProbeNet
in Prague, CZ
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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