31.41.136.0/21

inetnum:        31.41.136.0 - 31.41.143.255
netname:        TVK-WSM
geoloc:         51.2161652 18.5832652
remarks:        ul. Andrzeja Struga 1
remarks:        98-300 Wielun
country:        PL
org:            ORG-WSM1-RIPE
admin-c:        DUMY-RIPE
tech-c:         DUMY-RIPE
status:         ASSIGNED PI
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         TVKWSM-MNT
mnt-by:         DCENTER-MNT
mnt-routes:     TVKWSM-MNT
mnt-routes:     DCENTER-MNT
mnt-domains:    TVKWSM-MNT
mnt-domains:    DCENTER-MNT
created:        2011-03-29T12:05:28Z
last-modified:  2016-10-07T19:18:01Z
source:         RIPE
sponsoring-org: ORG-dszo13-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-WSM1-RIPE
org-name:       TVK WSM - Wielunska Spoldzielnia Mieszkaniowa w Wieluniu
org-type:       OTHER
address:        Dummy address for ORG-WSM1-RIPE
e-mail:         unread@ripe.net
abuse-c:        TA5653-RIPE
mnt-ref:        TVKWSM-MNT
mnt-by:         TVKWSM-MNT
created:        2011-03-24T09:15:25Z
last-modified:  2016-10-07T19:26:32Z
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.