211.68.176.0/20
AS4538 · China Education and Research Network Center
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| Country |
China
|
| Domain | cernet.edu.cn |
| ASN | AS4538 |
| Registry | apnic |
| Hosted IPs | 4,096 |
| ID | CERNET-CN |
WHOIS Details
inetnum: 211.64.0.0 - 211.69.255.255 netname: CERNET-CN descr: China Education and Research Network descr: Room 224, Tsinghua University descr: Beijing, China country: CN admin-c: JW725-AP tech-c: XL364-AP tech-c: LZ530-AP abuse-c: AC1685-AP status: ALLOCATED PORTABLE remarks: confederation mnt-by: APNIC-HM mnt-lower: MAINT-CERNET-AP mnt-routes: MAINT-CERNET-AP mnt-irt: IRT-CERNET-AP last-modified: 2020-10-20T00:56:04Z 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 person: Jianping Wu address: China Education and Research Network Center address: Room 225, Main Building, Tsinghua University address: Beijing 100084 address: CN country: CN phone: +86-10-6278-5983 fax-no: +86-10-6278-5933 e-mail: jianping@cernet.edu.cn nic-hdl: JW725-AP mnt-by: MAINT-CERNET-AP last-modified: 2011-12-22T05:23:32Z source: APNIC person: Ling Zhang address: Network Center address: South China University of Technology address: Guangzhou, Guangdong 510641, China address: CN country: CN phone: +86-20-87110596 fax-no: +86-20-87110019 e-mail: ling@scut.edu.cn nic-hdl: LZ530-AP notify: dbmon@apnic.net mnt-by: MAINT-CERNET-AP last-modified: 2011-12-22T05:23:32Z source: APNIC person: Xing Li address: China Education and Research Network Center address: Room 225, Main Building, Tsinghua University address: Beijing 100084 address: CN country: CN phone: +86-10-6278-5983 fax-no: +86-10-6278-5933 e-mail: xing@cernet.edu.cn nic-hdl: XL364-AP mnt-by: MAINT-CERNET-AP last-modified: 2011-12-22T05:23:32Z source: APNIC
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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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