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 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 121.48.20.0/22
| 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 |
|---|---|---|
| 121.48.20.1 |
7.37ms 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 |
|---|---|---|
| 100.4.1.6 |
19.60ms from Ashburn,
US
|
|
| 12.247.117.70 |
0.96ms from Atlanta,
US
|
|
| 101.6.124.230 |
2.39ms from Beijing,
CN
|
|
| 52.81.79.134 |
3.43ms from Beijing,
CN
|
|
| 34.210.101.246 |
0.18ms from Boardman,
US
|
|
| 52.13.26.150 |
0.13ms from Boardman,
US
|
|
| 68.235.165.118 |
8.34ms from Dallas,
US
|
|
| 122.187.32.230 |
0.73ms from Delhi,
IN
|
|
| 73.14.38.6 |
7.58ms from Denver,
US
|
|
| 177.67.218.54 |
6.96ms from Fortaleza,
BR
|
|
| 84.137.36.214 |
3.76ms from Hamburg,
DE
|
|
| 213.28.7.198 |
1.64ms from Helsinki,
FI
|
|
| 73.117.232.134 |
12.26ms from Herndon,
US
|
|
| 49.130.159.38 |
16.68ms from Hong Kong,
HK
|
|
| 69.150.139.118 |
2.93ms from Houston,
US
|
|
| 78.145.72.6 |
4.14ms from London,
GB
|
|
| 88.12.10.6 |
1.27ms from Madrid,
ES
|
|
| 189.153.207.182 |
1.91ms from Monterrey,
MX
|
|
| 60.96.115.150 |
3.48ms from Osaka,
JP
|
|
| 93.107.236.150 |
2.77ms from Dublin,
IE
|
|
| 172.104.144.246 |
0.13ms from Frankfurt am Main,
DE
|
|
| 44.4.17.6 |
0.24ms from Fremont,
US
|
|
| 47.56.136.22 |
1.38ms from Hong Kong,
HK
|
|
| 74.224.38.230 |
0.32ms from Saint Thomas Mount,
IN
|
|
| 84.214.90.118 |
12.02ms from Sandefjord,
NO
|
Traceroute
Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.
IPinfo ProbeNet
in Chengdu, 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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