121.201.0.0/18
AS58543 Guangdong
121.201.0.0/18 - RJNET
Whois Details
inetnum: 121.201.0.0 - 121.201.127.255 netname: RJNET descr: Guangdong RuiJiang Science and Tech Ltd. descr: Room 404 ,No.100, Lingnan Avenue North, descr: Lingnan Building, Foshan, GuangDong, admin-c: WY1-AUTO tech-c: HZ1-AUTO country: CN mnt-by: MAINT-AP-CNISP mnt-irt: IRT-CNISP-CN status: allocated non-portable last-modified: 2013-08-20T07:08:20Z source: APNIC person: Wang Yang nic-hdl: WY1-AUTO e-mail: wangy@efly.cc address: Room 404 ,No.100, Lingnan Avenue North, address: Lingnan Building, Foshan, GuangDong, phone: +86-0757-88031024 country: CN mnt-by: MAINT-AP-CNISP last-modified: 2013-08-20T07:04:22Z source: APNIC person: Huo Zhifeng nic-hdl: HZ1-AUTO e-mail: huozf@efly.cc address: Room 404 ,No.100, Lingnan Avenue North, address: Lingnan Building, Foshan, GuangDong, phone: +86-0757-88031024 country: CN mnt-by: MAINT-AP-CNISP last-modified: 2013-08-20T07:04:23Z source: APNIC irt: IRT-CNISP-CN address: Beijing CNISP Technology Co., Ltd e-mail: ip@cnispgroup.com abuse-mailbox: ip@cnispgroup.com admin-c: CM2275-AP tech-c: CM2275-AP auth: # Filtered mnt-by: MAINT-AP-CNISP last-modified: 2017-05-03T07:08:38Z source: APNIC
IP address subranges within this IP range
Details
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.