General Info

ID

IANA-BLK

Description

Internet Assigned Numbers Authority

ASN

AS12980 AT&T Global Network Services Nederland B.V.

Registry

ripe

Whois Details

inet6num:       ::/0
netname:        IANA-BLK
descr:          The whole IPv6 address space
country:        EU # Country is really world wide
org:            ORG-IANA1-RIPE
admin-c:        DUMY-RIPE
tech-c:         DUMY-RIPE
mnt-by:         RIPE-NCC-HM-MNT
mnt-lower:      RIPE-NCC-HM-MNT
mnt-routes:     RIPE-NCC-RPSL-MNT
status:         ALLOCATED-BY-RIR
remarks:        This network in not allocated.
created:        2002-08-05T10:21:17Z
last-modified:  2011-05-20T07:22:53Z
source:         RIPE
remarks:        ****************************
remarks:        * THIS OBJECT IS MODIFIED
remarks:        * Please note that all data that is generally regarded as personal
remarks:        * data has been removed from this object.
remarks:        * To view the original object, please query the RIPE Database at:
remarks:        * http://www.ripe.net/whois
remarks:        ****************************


organisation:   ORG-IANA1-RIPE
org-name:       Internet Assigned Numbers Authority
org-type:       IANA
address:        Dummy address for ORG-IANA1-RIPE
e-mail:         unread@ripe.net
mnt-ref:        RIPE-NCC-HM-MNT
mnt-by:         RIPE-NCC-HM-MNT
created:        2004-04-17T09:57:29Z
last-modified:  2013-07-22T12:03:42Z
source:         RIPE
remarks:        ****************************
remarks:        * THIS OBJECT IS MODIFIED
remarks:        * Please note that all data that is generally regarded as personal
remarks:        * data has been removed from this object.
remarks:        * To view the original object, please query the RIPE Database at:
remarks:        * http://www.ripe.net/whois
remarks:        ****************************

Details

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.