121.251.52.0/24
AS4538 · China Education and Research Network Center
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| Country |
China
|
| Domain | cernet.edu.cn |
| ASN | AS4538 |
| Parent Range | 121.248.0.0/14 |
| Registry | APNIC |
| ID | NJR-CERNET |
WHOIS Details
inetnum: 121.248.0.0 - 121.251.255.255 netname: NJR-CERNET descr: China Education and Research Network descr: Nanjing Regional Network country: CN admin-c: CER-AP tech-c: CER-AP abuse-c: AC1685-AP status: ALLOCATED PORTABLE remarks: origin AS4538 remarks: confederation remarks: -------------------------------------------------------- remarks: To report network abuse, please contact mnt-irt remarks: For troubleshooting, please contact tech-c and admin-c remarks: Report invalid contact via www.apnic.net/invalidcontact remarks: -------------------------------------------------------- mnt-by: APNIC-HM mnt-lower: MAINT-CERNET-AP mnt-routes: MAINT-CERNET-AP mnt-irt: IRT-CERNET-AP last-modified: 2020-09-03T09:15:58Z 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: 121.248.0.0/15 descr: CERNET origin: AS4538 mnt-by: MAINT-CERNET-AP last-modified: 2009-01-05T03:10:57Z source: APNIC
Overlapping Ranges
BGP prefixes that contain 121.251.52.0/24
| Range | ASN | Company | Num of IPs |
|---|---|---|---|
| 121.248.0.0/14 | AS4538 | China Education and Research Network | 262,144 |
Nearby Ranges
BGP prefixes that overlap with 121.251.0.0/16
| Range | ASN | Company | Num of IPs |
|---|---|---|---|
| 121.248.0.0/14 | AS4538 | China Education and Research Network | 262,144 |
Hosted domains
There are no domains currently hosted on this ASN.
Hosted domains API
Pingable IPs
11 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.
| IP Address | ASN | Details |
|---|---|---|
| 121.251.52.5 |
14.21ms 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 |
|---|---|---|
| 72.246.96.24 |
0.33ms from Boston,
US
|
|
| 104.231.104.104 |
7.65ms from Cleveland,
US
|
|
| 70.124.56.88 |
8.83ms from Houston,
US
|
|
| 105.244.68.136 |
2.80ms from Johannesburg,
ZA
|
|
| 103.207.26.152 |
0.25ms from Los Angeles,
US
|
|
| 151.51.133.8 |
7.38ms from Milan,
IT
|
|
| 104.246.92.136 |
6.82ms from New York City,
US
|
|
| 210.237.33.168 |
11.51ms from Osaka,
JP
|
|
| 88.58.116.216 |
3.90ms from Rome,
IT
|
|
| 200.89.78.136 |
0.76ms from Santiago,
CL
|
|
| 123.51.219.40 |
0.88ms from Taipei,
TW
|
|
| 61.137.224.56 |
6.32ms from Tieling,
CN
|
|
| 142.186.45.120 |
1.64ms from Toronto,
CA
|
|
| 23.214.255.56 |
0.18ms from Ashburn,
US
|
|
| 217.92.198.136 |
5.60ms from Berlin,
DE
|
|
| 78.108.20.152 |
3.69ms from Budapest,
HU
|
|
| 3.76.92.72 |
0.18ms from Frankfurt am Main,
DE
|
|
| 121.41.62.24 |
4.68ms from Hangzhou,
CN
|
|
| 223.230.52.248 |
2.09ms from Hyderabad,
IN
|
|
| 1.245.244.8 |
3.52ms from Incheon,
KR
|
|
| 86.189.191.232 |
2.32ms from London,
GB
|
|
| 34.160.214.120 |
0.07ms from Melbourne,
AU
|
|
| 36.161.19.72 |
7.16ms from Nanjing,
CN
|
|
| 88.124.252.24 |
8.66ms from Paris,
FR
|
|
| 52.23.130.168 |
0.15ms from Reston,
US
|
Traceroute
Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.
IPinfo ProbeNet
in Chisinau, MD
What are IP address ranges?
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