183.173.128.0/18
AS4538 · China Education and Research Network Center
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| Country |
China
|
| Domain | cernet.edu.cn |
| ASN | AS4538 |
| Parent Range | 183.172.0.0/14 |
| Registry | APNIC |
| ID | BJR-CERNET |
WHOIS Details
inetnum: 183.172.0.0 - 183.175.255.255 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: NS2.NET.EDU.CN remarks: DNS.EDU.CN remarks: DNS2.EDU.CN 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: 2020-09-03T09:16:13Z 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: 183.172.0.0/14 descr: CERNET origin: AS4538 mnt-by: MAINT-CERNET-AP last-modified: 2009-11-25T07:36:58Z source: APNIC
Overlapping Ranges
BGP prefixes that contain 183.173.128.0/18
| Range | ASN | Company | Num of IPs |
|---|---|---|---|
| 183.172.0.0/14 | AS4538 | China Education and Research Network | 262,144 |
Nearby Ranges
BGP prefixes that overlap with 183.173.0.0/16
| Range | ASN | Company | Num of IPs |
|---|---|---|---|
| 183.172.0.0/14 | AS4538 | China Education and Research Network | 262,144 |
Hosted domains
There are no domains currently hosted on this ASN.
Hosted domains API
Pingable IPs
4,799 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.
| IP Address | ASN | Details |
|---|---|---|
| 183.173.133.239 |
6.54ms from Beijing,
CN
|
|
| 183.173.141.238 |
7.01ms from Beijing,
CN
|
|
| 183.173.162.152 |
4.08ms from Beijing,
CN
|
|
| 183.173.176.1 |
3.79ms from Tianjin,
CN
|
|
| 183.173.188.32 |
6.68ms from Tianjin,
CN
|
|
| 183.173.134.156 |
6.25ms from Beijing,
CN
|
|
| 183.173.168.1 |
2.31ms from Beijing,
CN
|
|
| 183.173.142.149 |
6.37ms from Beijing,
CN
|
|
| 183.173.135.103 |
4.96ms from Beijing,
CN
|
|
| 183.173.139.16 |
6.39ms from Beijing,
CN
|
|
| 183.173.167.37 |
5.32ms from Beijing,
CN
|
|
| 183.173.187.71 |
6.45ms from Beijing,
CN
|
|
| 183.173.163.96 |
6.93ms from Tianjin,
CN
|
|
| 183.173.159.224 |
5.08ms from Beijing,
CN
|
|
| 183.173.153.195 |
6.08ms from Tianjin,
CN
|
|
| 183.173.185.15 |
5.26ms from Beijing,
CN
|
|
| 183.173.128.1 |
3.60ms from Beijing,
CN
|
|
| 183.173.129.48 |
6.39ms from Beijing,
CN
|
|
| 183.173.147.77 |
6.37ms from Beijing,
CN
|
|
| 183.173.161.147 |
5.88ms from Beijing,
CN
|
|
| 183.173.184.1 |
3.08ms from Beijing,
CN
|
|
| 183.173.131.204 |
5.99ms from Beijing,
CN
|
|
| 183.173.146.21 |
4.99ms from Beijing,
CN
|
|
| 183.173.170.170 |
5.59ms from Beijing,
CN
|
|
| 183.173.154.124 |
5.72ms 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 |
|---|---|---|
| 203.134.56.34 |
0.19ms from Adelaide,
AU
|
|
| 70.171.36.50 |
12.37ms from Atlanta,
US
|
|
| 168.25.1.98 |
4.85ms from Atlanta,
US
|
|
| 91.181.165.130 |
3.54ms from Brussels,
BE
|
|
| 203.197.139.18 |
1.18ms from Chennai,
IN
|
|
| 85.97.237.18 |
2.35ms from Denizli,
TR
|
|
| 90.226.119.2 |
0.86ms from Goeteborg,
SE
|
|
| 154.208.188.162 |
0.66ms from Hong Kong,
HK
|
|
| 221.124.194.178 |
1.40ms from Hong Kong,
HK
|
|
| 110.37.48.162 |
17.70ms from Karachi,
PK
|
|
| 62.31.125.34 |
7.85ms from London,
GB
|
|
| 151.60.75.66 |
3.50ms from Milan,
IT
|
|
| 34.26.241.66 |
0.15ms from Moncks Corner,
US
|
|
| 38.153.77.114 |
0.43ms from Montreal,
CA
|
|
| 200.191.119.2 |
7.77ms from Rio de Janeiro,
BR
|
|
| 119.196.106.146 |
0.97ms from Seoul,
KR
|
|
| 94.137.173.18 |
0.56ms from Tbilisi,
GE
|
|
| 149.200.151.2 |
0.92ms from Amman,
JO
|
|
| 20.51.212.114 |
0.52ms from Ashburn,
US
|
|
| 101.17.109.210 |
10.65ms from Beijing,
CN
|
|
| 54.188.80.130 |
0.18ms from Boardman,
US
|
|
| 41.10.194.162 |
3.51ms from Cape Town,
ZA
|
|
| 98.46.36.2 |
10.26ms from Chicago,
US
|
|
| 72.178.101.226 |
4.07ms from Dallas,
US
|
|
| 68.15.106.178 |
4.75ms from Dallas,
US
|
Traceroute
Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.
IPinfo ProbeNet
in Beijing, 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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