138.223.0.0/16
AS3303 · Swisscom (Schweiz) AG
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inetnum: 138.223.0.0 - 138.223.255.255 status: LEGACY remarks: remarks: This inetnum has been transfered as part of the ERX. remarks: It was present in both the ARIN and RIPE databases, so remarks: the information from both databases has been merged. remarks: If you are the mntner of this object, please update it remarks: to reflect the correct information. remarks: remarks: Please see the information for this process: remarks: http://www.ripe.net/db/erx/erx-ip/network-138.html remarks: remarks: **** INFORMATION FROM ARIN OBJECT **** remarks: netname: ABB-NET4 descr: ABB Asea Brown Boveri Ltd descr: Affolternstrasse 44 descr: Zürich descr: 8050 country: CH admin-c: MB11580-RIPE tech-c: MB11580-RIPE remarks: changed: hostmaster@arin.net 19911212 remarks: changed: hostmaster@arin.net 19920114 remarks: **** INFORMATION FROM RIPE OBJECT **** netname: ABB-NET4 descr: ABB Schweiz AG descr: Business Services descr: CH-5400 Baden descr: Brown Boveri Strasse 6 / PO Box country: CH admin-c: MB11580-RIPE tech-c: MB11580-RIPE mnt-by: ABB-MNT created: 2001-12-21T12:37:10Z last-modified: 2019-12-04T13:11:24Z source: RIPE person: Martin Bartz address: Brown Boveri Strasse 6 e-mail: martin.bartz@ch.abb.com phone: +41 5858 53339 nic-hdl: MB11580-RIPE created: 2008-03-20T12:31:32Z last-modified: 2016-04-06T21:27:47Z mnt-by: RIPE-NCC-LOCKED-MNT source: RIPE route: 138.223.0.0/16 descr: ABB-NET4 origin: AS20868 notify: hostmaster@ch.abb.com mnt-by: ABB-MNT created: 1970-01-01T00:00:00Z last-modified: 2001-09-22T09:33:57Z source: RIPE route: 138.223.0.0/16 descr: ABB origin: AS3303 mnt-by: CH-UNISOURCE-MNT created: 2011-01-21T08:10:54Z last-modified: 2011-01-21T08:10:54Z 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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