145.51.0.0/16
AS1103 · SURF B.V.
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inetnum: 145.51.0.0 - 145.51.255.255 netname: HRONET descr: Hogeschool Rotterdam & Omstreken descr: Museumpark 40 descr: 3015 CX Rotterdam country: NL admin-c: JS15878-RIPE admin-c: WP1617-RIPE admin-c: FV4808-RIPE tech-c: JS15878-RIPE tech-c: WP1617-RIPE tech-c: FV4808-RIPE status: LEGACY mnt-by: SN-LIR-MNT mnt-irt: irt-SURFcert created: 1970-01-01T00:00:00Z last-modified: 2019-12-04T13:11:11Z source: RIPE abuse-email: cert@surfcert.nl abuse-c: SNS1-RIPE abuse-org: ORG-Sb3-RIPE person: Frans Verschoor address: Hogeschool Rotterdam address: Museumpark 40 address: P.O. Box 25035 address: 3001 HA Rotterdam address: The Netherlands phone: +31 (0)10 7944237 fax-no: +31 (0)10 7944360 nic-hdl: FV4808-RIPE mnt-by: SN-LIR-MNT created: 2014-03-24T17:12:33Z last-modified: 2014-03-24T17:12:33Z source: RIPE person: Jeffry Sleddens address: Hogeschool Rotterdam address: Museumpark 40 address: P.O. Box 25035 address: 3001 HA Rotterdam address: The Netherlands phone: +31 (0)10 2414415 fax-no: +31 (0)10 2414360 e-mail: j.p.g.sleddens@hro.nl nic-hdl: JS15878-RIPE notify: j.p.g.sleddens@hro.nl notify: lir@SURFnet.nl created: 2002-01-05T16:54:48Z last-modified: 2012-03-27T08:30:27Z source: RIPE mnt-by: HR-LIR-MNT person: Wouter Paalvast address: Hogeschool Rotterdam address: Museumpark 40 address: P.O. Box 25035 address: 3001 HA Rotterdam address: The Netherlands phone: +31 (0)10 7941337 fax-no: +31 (0)10 7944360 nic-hdl: WP1617-RIPE mnt-by: SN-LIR-MNT created: 2014-03-24T17:11:46Z last-modified: 2014-03-24T17:11:46Z source: RIPE route: 145.51.0.0/16 descr: HESROTTERDAM origin: AS1103 notify: lir@surfnet.nl mnt-by: AS1103-MNT created: 2002-02-27T13:45:03Z last-modified: 2019-03-21T09:01:45Z source: RIPE
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IP address subranges within this IP range
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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