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from 
<a href="http://www.iana.org/assignments/ipv4-address-space/" rel="ugc">http://www.iana.org/assignments/ipv4-address-space/</a> 
172/8 &nbsp; Administered by ARIN &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 1993-05 &nbsp; whois.arin.net &nbsp; &nbsp; &nbsp;LEGACY &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; [7] 
 
<a href="http://ws.arin.net/whois/?queryinput=N%20.%20NET172" rel="ugc">http://ws.arin.net/whois/?queryinput=N%20.%20NET172</a> 
OrgName: &nbsp; &nbsp;Various Registries (Maintained by ARIN) 
OrgID: &nbsp; &nbsp; &nbsp;VR-ARIN 
Address: &nbsp; &nbsp;3635 Concord Parkway, Suite 200 
City: &nbsp; &nbsp; &nbsp; Chantilly 
StateProv: &nbsp;VA 
PostalCode: 20151 
Country: &nbsp; &nbsp;US 
 
NetRange: &nbsp; 172.0.0.0 - 172.255.255.255 
CIDR: &nbsp; &nbsp; &nbsp; 172.0.0.0/8 
NetName: &nbsp; &nbsp;NET172 
NetHandle: &nbsp;NET-172-0-0-0-0 
Parent: &nbsp; &nbsp; 
NetType: &nbsp; &nbsp;Early Registrations, Maintained by ARIN 
NameServer: chia.arin.net 
NameServer: dill.arin.net 
NameServer: epazote.arin.net 
NameServer: figwort.arin.net 
NameServer: BASIL.ARIN.NET 
NameServer: henna.arin.net 
NameServer: indigo.arin.net 
Comment: &nbsp; &nbsp; 
RegDate: &nbsp; &nbsp;1993-05-01 
Updated: &nbsp; &nbsp;2004-07-22 
 
 

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<div class="content wysiwyg-content">
172.15/16 is it used subnet and it come under which institute &nbsp;ripe, AfriNIC , APNIC , ARIN or LACNIC??
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172.15/16 is it used subnet and it come under which institute  ripe, AfriNIC , APNIC , ARIN or LACNIC??

from
http://www.iana.org/assignments/ipv4-address-space/
172/8   Administered by ARIN                 1993-05   whois.arin.net      LEGACY             [7]

http://ws.arin.net/whois/?queryinput=N%20.%20NET172
OrgName:    Various Registries (Maintained by ARIN) 
OrgID:      VR-ARIN
Address:    3635 Concord Parkway, Suite 200
City:       Chantilly
StateProv:  VA
PostalCode: 20151
Country:    US

NetRange:   172.0.0.0 - 172.255.255.255 
CIDR:       172.0.0.0/8 
NetName:    NET172
NetHandle:  NET-172-0-0-0-0
Parent:     
NetType:    Early Registrations, Maintained by ARIN
NameServer: chia.arin.net
NameServer: dill.arin.net
NameServer: epazote.arin.net
NameServer: figwort.arin.net
NameServer: BASIL.ARIN.NET
NameServer: henna.arin.net
NameServer: indigo.arin.net
Comment:    
RegDate:    1993-05-01
Updated:    2004-07-22




Is 172.15/16 is used subnet??

Transmission Control Protocol/Internet Protocol (TCP/IP) is the set of networking protocols that define end-to-end connectivity specifying how data should be packeted, addressed, transmitted, routed and received at the destination. This functionality is organized into four abstraction layers which are used to sort all related protocols according to the scope of networking involved.