213.22.128.0/18

inetnum:        213.22.160.0 - 213.22.191.255
netname:        NOS
descr:          NOS COMUNICACOES S.A.
country:        PT
admin-c:        DUMY-RIPE
tech-c:         DUMY-RIPE
status:         ASSIGNED PA
remarks:        ABUSE REPORTS MUST BE SEND TO ABUSE@NOS.PT
notify:         ip.ripe.tech@nos.pt
mnt-by:         AS2860-MNT
created:        2002-07-24T16:38:33Z
last-modified:  2019-02-22T12:14:06Z
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-TPS1-RIPE
org-name:       NOS COMUNICACOES, S.A.
org-type:       LIR
address:        Dummy address for ORG-TPS1-RIPE
e-mail:         unread@ripe.net
mnt-ref:        AS2860-MNT
mnt-ref:        RIPE-NCC-HM-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         AS2860-MNT
abuse-c:        AR16494-RIPE
created:        2004-04-17T11:49:30Z
last-modified:  2019-05-03T15:27:41Z
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:        ****************************

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.