121.48.240.0/20
AS4538 · China Education and Research Network Center
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| Country |
China
|
| Domain | cernet.edu.cn |
| ASN | AS4538 |
| Parent Range | 121.48.0.0/15 |
| Registry | APNIC |
| ID | CDR-CERNET |
WHOIS Details
inetnum: 121.48.0.0 - 121.49.255.255 netname: CDR-CERNET descr: China Education and Research Network descr: Chengdu 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: 2020-09-03T09:16:00Z 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: 121.49.0.0/16 descr: CERNET origin: AS4538 mnt-by: MAINT-CERNET-AP last-modified: 2009-01-05T03:10:57Z source: APNIC
Overlapping Ranges
BGP prefixes that contain 121.48.240.0/20
| Range | ASN | Company | Num of IPs |
|---|---|---|---|
| 121.48.0.0/15 | AS4538 | China Education and Research Network | 131,072 |
Nearby Ranges
BGP prefixes that overlap with 121.48.0.0/16
| Range | ASN | Company | Num of IPs |
|---|---|---|---|
| 121.48.0.0/15 | 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 |
|---|---|---|
| 23.109.3.164 |
0.23ms from Amsterdam,
NL
|
|
| 62.234.29.84 |
1.76ms from Beijing,
CN
|
|
| 104.245.248.52 |
11.48ms from Chicago,
US
|
|
| 5.103.172.4 |
3.33ms from Copenhagen,
DK
|
|
| 86.45.119.164 |
2.52ms from Dublin,
IE
|
|
| 78.35.92.164 |
2.26ms from Duesseldorf,
DE
|
|
| 96.52.233.68 |
5.71ms from Edmonton,
CA
|
|
| 207.81.110.36 |
1.81ms from Kelowna,
CA
|
|
| 82.52.198.52 |
1.81ms from Milan,
IT
|
|
| 193.69.22.20 |
0.87ms from Oslo,
NO
|
|
| 99.10.119.116 |
6.33ms from San Antonio,
US
|
|
| 1.105.202.116 |
1.52ms from Seoul,
KR
|
|
| 223.143.76.52 |
7.15ms from Taipei,
TW
|
|
| 143.55.132.164 |
10.97ms from Atlanta,
US
|
|
| 44.225.223.132 |
0.18ms from Boardman,
US
|
|
| 170.51.44.4 |
18.74ms from Buenos Aires,
AR
|
|
| 47.223.143.36 |
9.11ms from Dallas,
US
|
|
| 52.138.238.196 |
0.20ms from Dublin,
IE
|
|
| 93.196.133.132 |
5.32ms from Frankfurt am Main,
DE
|
|
| 49.71.14.100 |
5.22ms from Huai'an,
CN
|
|
| 103.13.137.36 |
11.52ms from Jakarta,
ID
|
|
| 86.168.76.244 |
4.91ms from London,
GB
|
|
| 104.175.43.52 |
4.88ms from Los Angeles,
US
|
|
| 88.21.152.148 |
9.66ms from Madrid,
ES
|
|
| 193.49.103.4 |
5.27ms from Paris,
FR
|
Traceroute
Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.
IPinfo ProbeNet
in Dalian, CN
What are IP address ranges?
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