121.248.192.0/20
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: [email protected] abuse-mailbox: [email protected] admin-c: CER-AP tech-c: CER-AP auth: # Filtered remarks: timezone GMT+8 remarks: http://www.ccert.edu.cn remarks: [email protected] 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: [email protected] admin-c: CER-AP tech-c: CER-AP nic-hdl: AC1685-AP remarks: Generated from irt object IRT-CERNET-AP remarks: [email protected] was validated on 2025-08-15 abuse-mailbox: [email protected] 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: [email protected] remarks: [email protected] 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: 121.248.0.0/15 descr: CERNET origin: AS4538 mnt-by: MAINT-CERNET-AP last-modified: 2009-01-05T03:10:57Z source: APNIC
Overlapping Ranges
BGP prefixes that contain 121.248.192.0/20
| 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 121.248.0.0/16
| 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 |
|---|---|---|
| 185.102.217.52 |
0.08ms from Bucharest,
RO
|
|
| 24.137.170.100 |
10.37ms from Chicago,
US
|
|
| 45.151.56.244 |
0.15ms from Duesseldorf,
DE
|
|
| 87.251.30.228 |
18.75ms from Frankfurt am Main,
DE
|
|
| 147.67.53.4 |
4.86ms from Frankfurt am Main,
DE
|
|
| 221.126.11.148 |
1.66ms from Hong Kong,
HK
|
|
| 5.225.131.20 |
3.96ms from Madrid,
ES
|
|
| 24.47.124.116 |
6.34ms from New York City,
US
|
|
| 34.225.212.20 |
0.16ms from Reston,
US
|
|
| 78.84.28.196 |
1.12ms from Riga,
LV
|
|
| 151.27.102.36 |
4.42ms from Rome,
IT
|
|
| 14.87.127.68 |
2.97ms from Seoul,
KR
|
|
| 2.22.113.84 |
0.08ms from Vienna,
AT
|
|
| 78.62.192.4 |
2.69ms from Vilnius,
LT
|
|
| 5.13.106.52 |
6.08ms from Bacau,
RO
|
|
| 54.190.248.244 |
0.18ms from Boardman,
US
|
|
| 62.133.45.36 |
0.21ms from Bucharest,
RO
|
|
| 70.73.101.132 |
4.60ms from Calgary,
CA
|
|
| 109.57.12.68 |
6.32ms from Copenhagen,
DK
|
|
| 117.110.203.36 |
1.73ms from Incheon,
KR
|
|
| 110.11.197.148 |
2.30ms from Incheon,
KR
|
|
| 86.131.154.20 |
3.04ms from London,
GB
|
|
| 37.110.114.100 |
1.09ms from Moscow,
RU
|
|
| 38.78.231.84 |
0.74ms from New York City,
US
|
|
| 86.223.78.164 |
9.28ms 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 Shijiazhuang, CN
What are IP address ranges?
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