121.251.132.0/22
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: 121.250.0.0/15 descr: CERNET origin: AS4538 mnt-by: MAINT-CERNET-AP last-modified: 2009-01-05T03:10:57Z source: APNIC
Overlapping Ranges
BGP prefixes that contain 121.251.132.0/22
| 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
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 |
|---|---|---|
| 12.245.209.70 |
7.82ms from Chicago,
US
|
|
| 3.137.25.6 |
0.17ms from Columbus,
US
|
|
| 151.74.223.118 |
10.04ms from Crotone,
IT
|
|
| 67.173.255.6 |
4.43ms from Denver,
US
|
|
| 94.199.64.134 |
1.60ms from Krasnoyarsk,
RU
|
|
| 93.108.224.166 |
0.86ms from Lisbon,
PT
|
|
| 92.29.164.86 |
6.52ms from Manchester,
GB
|
|
| 207.65.89.150 |
2.10ms from Nashville,
US
|
|
| 34.226.195.86 |
0.51ms from Reston,
US
|
|
| 136.59.150.86 |
1.27ms from Salt Lake City,
US
|
|
| 207.225.223.86 |
2.47ms from Salt Lake City,
US
|
|
| 125.242.18.166 |
9.20ms from Seoul,
KR
|
|
| 139.219.238.150 |
1.88ms from Shanghai,
CN
|
|
| 20.213.167.246 |
0.70ms from Sydney,
AU
|
|
| 102.29.155.230 |
18.45ms from Tunis,
TN
|
|
| 92.190.3.6 |
6.49ms from Zaragoza,
ES
|
|
| 154.246.130.86 |
13.12ms from Algiers,
DZ
|
|
| 170.223.59.134 |
0.23ms from Ashburn,
US
|
|
| 73.238.164.166 |
7.80ms from Boston,
US
|
|
| 91.209.10.246 |
1.62ms from Brno,
CZ
|
|
| 74.36.129.182 |
13.86ms from Chicago,
US
|
|
| 92.35.34.150 |
1.02ms from Goeteborg,
SE
|
|
| 47.57.124.38 |
1.25ms from Hong Kong,
HK
|
|
| 114.107.5.230 |
9.32ms from Huai'an,
CN
|
|
| 178.61.95.22 |
2.18ms from Kuwait City,
KW
|
Traceroute
Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.
IPinfo ProbeNet
in Denpasar, ID
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