1.51.144.0/21
AS4538 · China Education and Research Network Center
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| Country |
China
|
| Domain | cernet.edu.cn |
| ASN | AS4538 |
| Parent Range | 1.51.0.0/16 |
| Registry | APNIC |
| ID | NJR-CERNET |
WHOIS Details
inetnum: 1.51.0.0 - 1.51.255.255 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: 2020-09-03T09:16:03Z 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: 1.51.0.0/16 descr: CERNET origin: AS4538 mnt-by: MAINT-CERNET-AP last-modified: 2010-07-15T07:00:01Z source: APNIC
Overlapping Ranges
BGP prefixes that contain 1.51.144.0/21
| Range | ASN | Company | Num of IPs |
|---|---|---|---|
| 1.51.0.0/16 | AS4538 | China Education and Research Network | 65,536 |
Nearby Ranges
BGP prefixes that overlap with 1.51.0.0/16
| Range | ASN | Company | Num of IPs |
|---|---|---|---|
| 1.51.0.0/16 | AS4538 | China Education and Research Network | 65,536 |
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 |
|---|---|---|
| 75.188.251.213 |
13.73ms from Ashburn,
US
|
|
| 210.246.231.85 |
0.35ms from Bangkok,
TH
|
|
| 108.225.44.245 |
9.37ms from Dallas,
US
|
|
| 87.170.107.133 |
4.60ms from Frankfurt am Main,
DE
|
|
| 45.250.186.101 |
1.75ms from Guangzhou,
CN
|
|
| 171.255.237.149 |
2.63ms from Hanoi,
VN
|
|
| 85.108.215.149 |
4.89ms from Istanbul,
TR
|
|
| 184.26.57.165 |
0.17ms from London,
GB
|
|
| 94.174.58.21 |
14.76ms from London,
GB
|
|
| 147.0.139.101 |
6.67ms from Milwaukee,
US
|
|
| 187.93.164.213 |
1.01ms from Osasco,
BR
|
|
| 84.96.151.181 |
2.02ms from Paris,
FR
|
|
| 95.108.50.229 |
8.65ms from Poznan,
PL
|
|
| 88.101.48.5 |
7.16ms from Prague,
CZ
|
|
| 20.99.172.21 |
0.27ms from Quincy,
US
|
|
| 54.165.130.53 |
0.17ms from Reston,
US
|
|
| 136.60.245.181 |
1.36ms from Salt Lake City,
US
|
|
| 31.15.37.229 |
0.86ms from Stockholm,
SE
|
|
| 126.50.157.229 |
7.07ms from Tokyo,
JP
|
|
| 213.76.73.5 |
1.45ms from Warsaw,
PL
|
|
| 84.85.38.5 |
2.76ms from Amsterdam,
NL
|
|
| 54.68.79.101 |
0.15ms from Boardman,
US
|
|
| 81.182.134.85 |
0.72ms from Budapest,
HU
|
|
| 128.77.181.181 |
0.81ms from Copenhagen,
DK
|
|
| 213.26.138.165 |
15.60ms from Frosinone,
IT
|
Traceroute
Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.
IPinfo ProbeNet
in Rio de Janeiro, BR
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