31.25.216.0/21
AS56828 · Norsk Helsenett SF
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inetnum: 31.25.216.0 - 31.25.223.255 netname: NO-NHN-20110309 country: NO org: ORG-NHA3-RIPE admin-c: OWA2-RIPE admin-c: LR2413-RIPE tech-c: OWA2-RIPE tech-c: LR2413-RIPE status: ALLOCATED PA notify: ripe-notify@nhn.no mnt-by: RIPE-NCC-HM-MNT mnt-by: MNT-NHN mnt-lower: MNT-NHN mnt-routes: MNT-NHN mnt-routes: AS2119-MNT mnt-irt: IRT-NHN created: 2011-03-09T13:20:53Z last-modified: 2016-09-02T12:03:46Z source: RIPE abuse-email: abuse@nhn.no abuse-c: NHN-RIPE abuse-org: ORG-NHA3-RIPE organisation: ORG-NHA3-RIPE org-name: Norsk Helsenett SF country: NO org-type: LIR address: Postboks 6123 address: 7435 address: TRONDHEIM address: NORWAY phone: +4773565756 fax-no: +4773931480 e-mail: orjan.wasmuth@nhn.no admin-c: EHN3-RIPE admin-c: OWA2-RIPE admin-c: LR2413-RIPE abuse-c: NHN-RIPE mnt-ref: RIPE-NCC-HM-MNT mnt-ref: MNT-NHN mnt-by: RIPE-NCC-HM-MNT mnt-by: MNT-NHN created: 2006-08-04T05:11:05Z last-modified: 2020-12-16T12:52:03Z source: RIPE person: Lasse Rygg address: Evjenvegen 48 address: postboks 6448 address: N-9294 Tromso phone: +47 7356 5844 nic-hdl: LR2413-RIPE mnt-by: MNT-NHN created: 2006-10-11T09:15:59Z last-modified: 2011-03-11T19:16:33Z source: RIPE person: Orjan Wasmuth address: Nedre Markveg 29 address: N-9011 address: Tromso address: Norway phone: +4793039517 nic-hdl: OWA2-RIPE mnt-by: MNT-NHN created: 2006-08-14T13:50:12Z last-modified: 2011-03-11T19:13:52Z source: RIPE route: 31.25.216.0/21 descr: Norsk Helsenett A/S origin: AS56828 mnt-by: MNT-NHN created: 2013-08-21T10:46:11Z last-modified: 2013-08-21T10:46:11Z 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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