121.48.20.0/22
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 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 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 121.48.20.0/22
| 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
2 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.
| IP Address | ASN | Details |
|---|---|---|
| 121.48.20.2 |
8.17ms from Chengdu,
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 |
|---|---|---|
| 23.43.156.54 |
0.60ms from Auckland,
NZ
|
|
| 109.245.238.214 |
0.67ms from Belgrade,
RS
|
|
| 34.67.225.150 |
0.11ms from Council Bluffs,
US
|
|
| 73.203.91.134 |
5.47ms from Denver,
US
|
|
| 93.107.236.150 |
2.94ms from Dublin,
IE
|
|
| 52.51.142.86 |
0.18ms from Dublin,
IE
|
|
| 23.234.49.70 |
0.71ms from Hong Kong,
HK
|
|
| 193.51.191.86 |
1.58ms from Saint-Denis,
FR
|
|
| 96.72.166.182 |
6.07ms from San Jose,
US
|
|
| 199.48.48.6 |
0.97ms from Seattle,
US
|
|
| 177.68.79.102 |
1.37ms from São Paulo,
BR
|
|
| 202.221.50.118 |
1.95ms from Tokyo,
JP
|
|
| 98.118.53.22 |
1.36ms from Boston,
US
|
|
| 162.197.251.166 |
2.68ms from Chicago,
US
|
|
| 92.196.137.6 |
2.44ms from Frankfurt am Main,
DE
|
|
| 87.189.77.198 |
7.75ms from Frankfurt am Main,
DE
|
|
| 189.163.225.214 |
6.08ms from Guadalajara,
MX
|
|
| 114.201.190.6 |
0.78ms from Incheon,
KR
|
|
| 188.239.94.230 |
5.60ms from Kyiv,
UA
|
|
| 90.18.136.102 |
9.34ms from Marseille,
FR
|
|
| 34.118.177.102 |
0.12ms from Montreal,
CA
|
|
| 31.148.238.54 |
12.28ms from Moscow,
RU
|
|
| 180.141.213.22 |
2.90ms from Nanning,
CN
|
|
| 50.210.236.230 |
7.69ms from New York City,
US
|
|
| 153.169.134.70 |
2.53ms from Osaka,
JP
|
Traceroute
Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.
IPinfo ProbeNet
in Guangzhou, CN
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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