121.248.80.0/20
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: 121.250.0.0/15 descr: CERNET origin: AS4538 mnt-by: MAINT-CERNET-AP last-modified: 2009-01-05T03:10:57Z source: APNIC
Overlapping Ranges
BGP prefixes that contain 121.248.80.0/20
| 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 |
|---|---|---|
| 85.158.111.100 |
0.25ms from Ashburn,
US
|
|
| 172.73.161.68 |
9.09ms from Atlanta,
US
|
|
| 110.49.45.20 |
4.91ms from Bangkok,
TH
|
|
| 35.86.30.228 |
0.15ms from Boardman,
US
|
|
| 164.41.102.52 |
0.53ms from Brasilia,
BR
|
|
| 75.22.131.36 |
18.15ms from Chicago,
US
|
|
| 3.17.237.132 |
0.17ms from Columbus,
US
|
|
| 81.24.75.4 |
6.41ms from Ljubljana,
SI
|
|
| 86.242.180.196 |
2.07ms from Paris,
FR
|
|
| 49.192.39.84 |
2.56ms from Perth,
AU
|
|
| 78.80.3.68 |
6.77ms from Prague,
CZ
|
|
| 90.183.15.196 |
5.97ms from Prague,
CZ
|
|
| 112.243.51.68 |
5.15ms from Qingdao,
CN
|
|
| 69.121.73.116 |
3.31ms from Secaucus,
US
|
|
| 121.172.43.228 |
1.44ms from Seoul,
KR
|
|
| 14.46.42.132 |
6.26ms from Seoul,
KR
|
|
| 39.112.137.36 |
6.22ms from Seoul,
KR
|
|
| 68.178.158.20 |
0.91ms from Singapore,
SG
|
|
| 4.237.22.36 |
0.72ms from Sydney,
AU
|
|
| 36.226.61.36 |
1.64ms from Taipei,
TW
|
|
| 195.81.160.68 |
0.49ms from Amsterdam,
NL
|
|
| 52.20.158.164 |
0.56ms from Ashburn,
US
|
|
| 130.222.37.20 |
0.07ms from Ashburn,
US
|
|
| 194.165.51.164 |
0.28ms from Brussels,
BE
|
|
| 102.191.129.132 |
6.03ms from Cairo,
EG
|
Traceroute
Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.
IPinfo ProbeNet
in Tokyo, JP
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