121.250.24.0/21
AS4538 · China Education and Research Network Center
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Country |
China
|
Domain | cernet.edu.cn |
ASN | AS4538 |
Parent Range | 121.250.0.0/15 |
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: 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 2025-01-22 mnt-by: MAINT-CERNET-AP last-modified: 2025-01-22T13:47:43Z 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 2025-01-22 abuse-mailbox: abuse@cernet.edu.cn mnt-by: APNIC-ABUSE last-modified: 2025-01-22T16:25:45Z 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: 121.248.0.0/15 descr: CERNET origin: AS4538 mnt-by: MAINT-CERNET-AP last-modified: 2009-01-05T03:10:57Z source: APNIC
Overlapping Ranges
BGP prefixes that contain 121.250.24.0/21
Range | ASN | Company | Num of IPs |
---|---|---|---|
121.250.0.0/15 | AS4538 | China Education and Research Network | 131,072 |
121.248.0.0/14 | AS4538 | China Education and Research Network | 262,144 |
Nearby Ranges
BGP prefixes that overlap with 121.250.0.0/16
Range | ASN | Company | Num of IPs |
---|---|---|---|
121.248.0.0/14 | AS4538 | China Education and Research Network | 262,144 |
121.250.0.0/15 | AS4538 | China Education and Research Network | 131,072 |
121.250.96.0/19 | AS24363 | China Education and Research Network | 8,192 |
121.250.96.0/19 | AS4538 | China Education and Research Network | 8,192 |
121.250.160.0/19 | AS24363 | China Education and Research Network | 8,192 |
121.250.160.0/19 | AS4538 | China Education and Research Network | 8,192 |
121.250.208.0/20 | AS24363 | China Education and Research Network | 4,096 |
121.250.208.0/20 | AS4538 | China Education and Research Network | 4,096 |
121.250.240.0/20 | AS4538 | China Education and Research Network | 4,096 |
121.250.240.0/20 | AS24363 | China Education and Research Network | 4,096 |
121.250.0.0/20 | AS24363 | China Education and Research Network | 4,096 |
121.250.192.0/20 | AS4538 | China Education and Research Network | 4,096 |
121.250.0.0/20 | AS4538 | China Education and Research Network | 4,096 |
121.250.128.0/20 | AS24363 | China Education and Research Network | 4,096 |
121.250.192.0/20 | AS24363 | China Education and Research Network | 4,096 |
121.250.128.0/20 | AS4538 | China Education and Research Network | 4,096 |
121.250.144.0/20 | AS4538 | China Education and Research Network | 4,096 |
121.250.144.0/20 | AS24363 | China Education and Research Network | 4,096 |
121.250.32.0/20 | AS24363 | China Education and Research Network | 4,096 |
121.250.32.0/20 | AS4538 | China Education and Research Network | 4,096 |
121.250.224.0/21 | AS24363 | China Education and Research Network | 2,048 |
121.250.80.0/21 | AS4538 | China Education and Research Network | 2,048 |
121.250.80.0/21 | AS24363 | China Education and Research Network | 2,048 |
121.250.16.0/21 | AS24363 | China Education and Research Network | 2,048 |
121.250.16.0/21 | AS4538 | China Education and Research Network | 2,048 |
121.250.224.0/21 | AS4538 | China Education and Research Network | 2,048 |
121.250.56.0/21 | AS24363 | China Education and Research Network | 2,048 |
121.250.56.0/21 | AS4538 | China Education and Research Network | 2,048 |
121.250.88.0/23 | AS24363 | China Education and Research Network | 512 |
121.250.88.0/23 | AS4538 | China Education and Research Network | 512 |
121.250.48.0/23 | AS24363 | China Education and Research Network | 512 |
121.250.48.0/23 | AS4538 | China Education and Research Network | 512 |
121.250.50.0/24 | AS4538 | China Education and Research Network | 256 |
121.250.50.0/24 | AS24363 | China Education and Research Network | 256 |
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 |
---|---|---|
121.250.28.130 | 3dalibaba.com | 1 |
Hosted domains API
Pingable IPs
9 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.
IP Address | ASN | Details |
---|---|---|
121.250.27.129 | 10.96ms from Beijing, CN | |
121.250.30.1 | 11.89ms from Beijing, CN | |
121.250.24.1 | 15.06ms from Beijing, CN | |
121.250.28.126 | 12.99ms 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 |
---|---|---|
87.208.132.229 | 4.56ms from Amsterdam, NL | |
44.232.44.181 | 0.17ms from Boardman, US | |
52.34.116.149 | 0.16ms from Boardman, US | |
72.166.96.197 | 5.78ms from Chicago, US | |
88.224.149.85 | 10.35ms from Izmir, TR | |
195.23.112.181 | 11.49ms from Lisbon, PT | |
183.101.53.69 | 1.59ms from Seoul, KR | |
47.94.53.197 | 2.06ms from Beijing, CN | |
139.59.92.101 | 0.31ms from Bengaluru, IN | |
63.41.123.229 | 19.10ms from Dallas, US | |
216.239.162.69 | 4.72ms from Miami, US | |
78.157.5.21 | 5.43ms from Pristina, XK | |
151.63.214.133 | 19.71ms from Rende, IT | |
5.133.238.5 | 2.21ms from Baku, AZ | |
101.109.238.133 | 1.31ms from Bangkok, TH | |
51.142.113.245 | 0.19ms from London, GB | |
192.189.45.5 | 2.08ms from Los Angeles, US | |
113.158.90.165 | 8.96ms from Osaka, JP | |
70.171.201.69 | 4.72ms from Phoenix, US | |
1.230.206.69 | 1.01ms from Seoul, KR | |
153.171.10.37 | 7.65ms from Tokyo, JP | |
102.214.88.37 | 0.56ms from Accra, GH | |
186.123.117.245 | 18.87ms from Buenos Aires, AR | |
71.239.186.245 | 4.68ms from Chicago, US | |
72.20.129.5 | 0.80ms from Houston, US |
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.
Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.
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