81.3.204.0/23
AS25255 · Hutchison Drei Austria GmbH
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inetnum: 81.3.192.0 - 81.3.223.255 netname: AT-ONE-NET2 descr: Network of Hutchison Drei Austria GmbH country: AT admin-c: ONE23-RIPE tech-c: ONE23-RIPE status: ASSIGNED PA mnt-by: AS12635-MNT mnt-lower: AS12635-MNT mnt-domains: AS12635-MNT mnt-routes: AS12635-MNT created: 2002-04-29T21:38:34Z last-modified: 2013-08-28T05:47:32Z source: RIPE abuse-email: abuse@drei.com abuse-c: AR13560-RIPE abuse-org: ORG-CAGf1-RIPE role: H3A IP Network Systems address: Network of Hutchison Drei Austria GmbH address: Bruenner Strasse 52 address: A-1210 Vienna phone: +43 50660 0 e-mail: noc@drei.com remarks: *************************************** remarks: Information http://www.drei.at remarks: Peering contact noc@drei.com remarks: Abuse contact abuse@drei.com remarks: *************************************** admin-c: WN43-RIPE tech-c: WN43-RIPE tech-c: SM34561-RIPE abuse-mailbox: abuse@drei.com nic-hdl: ONE23-RIPE mnt-by: AS12635-MNT created: 2002-01-02T16:17:57Z last-modified: 2024-01-29T13:43:11Z source: RIPE route: 81.3.192.0/18 descr: AT-ONE-NET2 descr: Hutchison Drei Austria GmbH origin: AS12635 mnt-by: AS12635-MNT mnt-lower: AS12635-MNT mnt-routes: AS12635-MNT created: 2002-04-23T18:14:30Z last-modified: 2016-03-07T08:58:56Z source: RIPE route: 81.3.192.0/18 descr: Hutchison Drei Austria GmbH origin: AS25255 mnt-by: AS12635-MNT created: 2016-03-07T11:52:56Z last-modified: 2019-12-12T16:14:11Z 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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