185.48.21.0/24
AS199711 · National Cyber and Information Security Agency
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inetnum: 185.48.20.0 - 185.48.21.255 netname: NUKIB-PRAHA descr: National Cyber and Information Security Agency descr: Praha country: CZ org: ORG-NBU2-RIPE admin-c: NCAI1-RIPE tech-c: NCAI1-RIPE status: ASSIGNED PA mnt-by: NBUCZ-MNT mnt-routes: NBUCZ-MNT mnt-routes: AS2852-MNT created: 2020-04-23T08:41:15Z last-modified: 2022-11-04T07:28:25Z source: RIPE abuse-email: abuse@nukib.cz abuse-c: AR69284-RIPE abuse-org: ORG-NBU2-RIPE organisation: ORG-NBU2-RIPE org-name: National Cyber and Information Security Agency country: CZ org-type: LIR address: PO BOX no. 17 address: 616 00 address: Brno address: CZECH REPUBLIC phone: +420 541 110 777 fax-no: +420 541 110 723 e-mail: all.oit.osid@nukib.cz abuse-c: AR69284-RIPE admin-c: NCAI1-RIPE tech-c: NCAI1-RIPE mnt-ref: RIPE-NCC-HM-MNT mnt-ref: NBUCZ-MNT mnt-by: RIPE-NCC-HM-MNT mnt-by: NBUCZ-MNT created: 2013-12-02T10:42:12Z last-modified: 2023-10-02T06:10:03Z source: RIPE role: NCISA Admins address: National Cyber and Information Security Agency address: Mucednicka 1125/31 address: Brno address: 616 00 address: The Czech Republic phone: +420 541 110 777 e-mail: all.oit.osid@nukib.cz org: ORG-NBU2-RIPE admin-c: MT18104-RIPE tech-c: MT18104-RIPE admin-c: MM56939-RIPE tech-c: MM56939-RIPE nic-hdl: NCAI1-RIPE mnt-by: TENCZ-MNT mnt-by: NBUCZ-MNT created: 2017-10-30T12:31:04Z last-modified: 2023-10-02T06:13:14Z source: RIPE route: 185.48.20.0/23 descr: National Cyber and Information Security Agency descr: Prague origin: AS199711 org: ORG-NBU2-RIPE mnt-by: AS2852-MNT mnt-by: NBUCZ-MNT created: 2014-03-03T10:11:46Z last-modified: 2020-04-06T09:53:10Z source: RIPE organisation: ORG-NBU2-RIPE org-name: National Cyber and Information Security Agency country: CZ org-type: LIR address: PO BOX no. 17 address: 616 00 address: Brno address: CZECH REPUBLIC phone: +420 541 110 777 fax-no: +420 541 110 723 e-mail: all.oit.osid@nukib.cz abuse-c: AR69284-RIPE admin-c: NCAI1-RIPE tech-c: NCAI1-RIPE mnt-ref: RIPE-NCC-HM-MNT mnt-ref: NBUCZ-MNT mnt-by: RIPE-NCC-HM-MNT mnt-by: NBUCZ-MNT created: 2013-12-02T10:42:12Z last-modified: 2023-10-02T06:10:03Z source: RIPE
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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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