AS1103 SURFnet bv


2001:67c:262c::/48 - DUO-NET




Dienst Uitvoering Onderwijs


AS1103 SURFnet bv





Whois Details

inet6num:         2001,67c,262c,,/48
netname:          DUO-NET
country:          NL
org:              ORG-DUO1-RIPE
admin-c:          JJ3251-RIPE
tech-c:           RS12879-RIPE
status:           ASSIGNED PI
mnt-by:           RIPE-NCC-END-MNT
mnt-by:           SN-LIR-MNT
mnt-routes:       AS1103-MNT
mnt-domains:      SN-LIR-MNT
created:          2012-01-04T10,24,44Z
last-modified:    2016-04-14T08,43,12Z
source:           RIPE
sponsoring-org:   ORG-Sb3-RIPE

organisation:     ORG-DUO1-RIPE
org-name:         Dienst Uitvoering Onderwijs
org-type:         OTHER
address:          Zernikelaan 16
address:          9747 AA Groningen
address:          The Netherlands
abuse-c:          ODCN1-RIPE
mnt-ref:          SN-LIR-MNT
mnt-ref:          LOGIUS
mnt-ref:          ODCN-MNT
mnt-by:           SN-LIR-MNT
mnt-by:           LOGIUS
mnt-by:           ODCN-MNT
created:          2012-01-04T08,50,06Z
last-modified:    2016-09-15T12,29,29Z
source:           RIPE

person:           Jaap Jansma
address:          Dienst Uitvoering Onderwijs
address:          The Netherlands
phone:            +31 50 599 98 39
fax-no:           +31 50 599 98 50
nic-hdl:          JJ3251-RIPE
mnt-by:           SN-LIR-MNT
created:          2011-12-16T09,03,19Z
last-modified:    2011-12-16T09,03,19Z
source:           RIPE

person:           Rene Schut
address:          Dienst Uitvoering Onderwijs
address:          The Netherlands
phone:            +31 50 599 99 20
fax-no:           +31 50 599 98 50
nic-hdl:          RS12879-RIPE
mnt-by:           SN-LIR-MNT
mnt-by:           LOGIUS
created:          2011-12-16T09,06,56Z
last-modified:    2016-07-25T09,05,20Z
source:           RIPE

route6:           2001,67c,262c,,/48
descr:            DUO-NET
origin:           AS1103
mnt-by:           AS1103-MNT
created:          2014-07-02T09,11,26Z
last-modified:    2014-07-02T09,11,26Z
source:           RIPE


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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