121.193.128.0/20
AS4538 · China Education and Research Network Center
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| Country |
China
|
| Domain | cernet.edu.cn |
| ASN | AS4538 |
| Parent Range | 121.193.0.0/16 |
| Registry | APNIC |
| ID | BJR-CERNET |
WHOIS Details
inetnum: 121.193.0.0 - 121.193.255.255 netname: BJR-CERNET descr: China Education and Research Network descr: Beijing Regional Network country: CN admin-c: CER-AP tech-c: CER-AP abuse-c: AC1685-AP status: ALLOCATED PORTABLE remarks: origin AS4538 remarks: confederation mnt-by: APNIC-HM mnt-lower: MAINT-CERNET-AP mnt-routes: MAINT-CERNET-AP mnt-irt: IRT-CERNET-AP last-modified: 2020-09-03T09:16:09Z 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: 121.193.0.0/16 descr: CERNET origin: AS4538 mnt-by: MAINT-CERNET-AP last-modified: 2009-01-05T03:10:57Z source: APNIC
Overlapping Ranges
BGP prefixes that contain 121.193.128.0/20
| Range | ASN | Company | Num of IPs |
|---|---|---|---|
| 121.193.0.0/16 | AS4538 | China Education and Research Network | 65,536 |
Nearby Ranges
BGP prefixes that overlap with 121.193.0.0/16
| Range | ASN | Company | Num of IPs |
|---|---|---|---|
| 121.193.0.0/16 | AS4538 | China Education and Research Network | 65,536 |
Hosted domains
There is 1 domain name hosted across 1 IP address on this ASN. Checkout our API to access full domain hosting information.
| IP Address | Domain | Domains on this IP |
|---|
Hosted domains API
Pingable IPs
150 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.
| IP Address | ASN | Details |
|---|---|---|
| 121.193.143.234 |
4.08ms from Beijing,
CN
|
|
| 121.193.132.42 |
6.95ms from Beijing,
CN
|
|
| 121.193.131.8 |
6.17ms from Beijing,
CN
|
|
| 121.193.130.40 |
5.21ms from Beijing,
CN
|
|
| 121.193.136.225 |
4.29ms from Beijing,
CN
|
|
| 121.193.141.4 |
4.36ms from Beijing,
CN
|
|
| 121.193.138.244 |
4.29ms from Beijing,
CN
|
|
| 121.193.142.237 |
4.31ms from Beijing,
CN
|
|
| 121.193.140.6 |
4.19ms from Beijing,
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 |
|---|---|---|
| 76.29.255.132 |
10.75ms from Atlanta,
US
|
|
| 75.182.178.52 |
5.02ms from Charlotte,
US
|
|
| 38.98.147.4 |
0.40ms from Chicago,
US
|
|
| 93.133.105.116 |
3.95ms from Duesseldorf,
DE
|
|
| 89.144.19.100 |
0.42ms from Frankfurt am Main,
DE
|
|
| 69.89.53.196 |
0.76ms from Kansas City,
US
|
|
| 76.58.19.4 |
6.90ms from San Jose,
US
|
|
| 50.192.236.244 |
5.30ms from Secaucus,
US
|
|
| 210.97.164.36 |
1.46ms from Seoul,
KR
|
|
| 125.187.184.36 |
1.86ms from Seoul,
KR
|
|
| 138.197.148.84 |
0.27ms from Toronto,
CA
|
|
| 81.223.59.244 |
0.95ms from Vienna,
AT
|
|
| 188.77.162.20 |
7.91ms from Zaragoza,
ES
|
|
| 185.180.89.148 |
3.39ms from Budapest,
HU
|
|
| 52.215.34.196 |
0.20ms from Dublin,
IE
|
|
| 52.236.88.116 |
0.21ms from Dublin,
IE
|
|
| 171.231.84.116 |
5.50ms from Hanoi,
VN
|
|
| 95.176.252.4 |
1.99ms from Ljubljana,
SI
|
|
| 95.73.135.164 |
4.14ms from Moscow,
RU
|
|
| 217.25.234.196 |
8.41ms from Moscow,
RU
|
|
| 31.220.167.4 |
9.94ms from Novosibirsk,
RU
|
|
| 119.229.70.4 |
1.20ms from Osaka,
JP
|
|
| 210.161.225.116 |
9.94ms from Osaka,
JP
|
|
| 70.176.136.100 |
1.45ms from Phoenix,
US
|
|
| 3.210.39.180 |
0.23ms 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 Las Vegas, US
What are IP address ranges?
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