42.51.128.0/18
AS56005 · Zhengzhou Fastidc Technology Co.,Ltd.
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inetnum: 42.51.128.0 - 42.51.255.255 netname: HTU-NET descr: Henan Telcom Union Technology Co., LTD descr: 73, 18 Buliding, 93 Jingsan Road, descr: Zhengzhou City,Henan,China country: CN admin-c: QW703-AP tech-c: LW2337-AP abuse-c: AC1910-AP status: ALLOCATED NON-PORTABLE mnt-by: MAINT-AP-CNISP mnt-irt: IRT-CNISP-CN last-modified: 2021-02-17T13:09:00Z source: APNIC irt: IRT-CNISP-CN address: Beijing CNISP Technology Co., Ltd e-mail: support@cnispgroup.com abuse-mailbox: support@cnispgroup.com admin-c: CM2275-AP tech-c: CM2275-AP auth: # Filtered remarks: support@cnispgroup.com was validated on 2024-07-12 mnt-by: MAINT-AP-CNISP last-modified: 2024-07-12T02:58:56Z source: APNIC role: ABUSE CNISPCN address: Beijing CNISP Technology Co., Ltd country: ZZ phone: +000000000 e-mail: support@cnispgroup.com admin-c: CM2275-AP tech-c: CM2275-AP nic-hdl: AC1910-AP remarks: Generated from irt object IRT-CNISP-CN remarks: support@cnispgroup.com was validated on 2024-07-12 abuse-mailbox: support@cnispgroup.com mnt-by: APNIC-ABUSE last-modified: 2024-07-12T02:59:10Z source: APNIC person: Liu Wei nic-hdl: LW2337-AP e-mail: abuse@htu.cc address: 73, 18 Buliding, 93 Jingsan Road, phone: +86-371-55056677 country: CN mnt-by: MAINT-NEW last-modified: 2013-08-02T03:06:29Z source: APNIC person: Qingsong Wang nic-hdl: QW703-AP e-mail: abuse@htu.cc address: 73, 18 Buliding, 93 Jingsan Road, phone: +86-371-55056677 country: CN mnt-by: MAINT-NEW last-modified: 2013-08-02T03:06:28Z source: APNIC route: 42.51.128.0/17 descr: China Unicom Henan Province network descr: Addresses from CNNIC country: CN origin: AS4837 mnt-by: MAINT-CNCGROUP-RR last-modified: 2012-08-07T07:18:08Z 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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