103.3.19.0/24
AS132827 · GATEWAY INC
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inetnum: 103.3.19.0 - 103.3.19.255 netname: SocialMNet descr: SocialMNet country: JP admin-c: EN126-AP tech-c: EN126-AP abuse-c: AW972-AP status: ASSIGNED NON-PORTABLE remarks: For SPAM/ABUSE Issue:abuse@m-idc.biz mnt-by: MAINT-JP-DOUBLECAST mnt-lower: MAINT-JP-DOUBLECAST mnt-routes: MAINT-JP-DOUBLECAST mnt-irt: IRT-W-CAST-2-JP last-modified: 2021-01-27T00:40:25Z source: APNIC irt: IRT-W-CAST-2-JP address: Fuji Shinjuku Building 4th floor address: Shinjuku 5-11-13 Shinjuku-ku address: Tokyo 160-0022 Japan e-mail: ipadmin@m-idc.jp abuse-mailbox: ipadmin@m-idc.jp admin-c: EN126-AP tech-c: EN126-AP auth: # Filtered remarks: ipadmin@m-idc.jp was validated on 2024-08-21 mnt-by: MAINT-JP-DOUBLECAST last-modified: 2024-08-21T01:04:29Z source: APNIC role: ABUSE WCAST2JP country: ZZ address: Fuji Shinjuku Building 4th floor address: Shinjuku 5-11-13 Shinjuku-ku address: Tokyo 160-0022 Japan phone: +000000000 e-mail: ipadmin@m-idc.jp admin-c: EN126-AP tech-c: EN126-AP nic-hdl: AW972-AP remarks: Generated from irt object IRT-W-CAST-2-JP remarks: ipadmin@m-idc.jp was validated on 2024-08-21 abuse-mailbox: ipadmin@m-idc.jp mnt-by: APNIC-ABUSE last-modified: 2024-08-21T01:05:11Z source: APNIC person: Etsuko Nakagawa address: Fuji Shinjuku Bldg. 4F, Shinjuku 5-11-13, Tokyo country: JP phone: +81-3-3350-7762 fax-no: +81-3-3350-8685 e-mail: etsuko.nakagawa@m-idc.biz nic-hdl: EN126-AP mnt-by: MAINT-JP-DOUBLECAST last-modified: 2012-08-02T05:03:52Z source: APNIC route: 103.3.19.0/24 origin: AS132827 descr: Double Cast Inc. Fuji Shinjuku Building 4th floor Shinjuku 5-11-13 mnt-by: MAINT-JP-DOUBLECAST last-modified: 2020-01-28T09:00:25Z source: APNIC
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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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