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ASN Lookup Tool
AS21309 CASAWEB-AS

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ASN Extended Info API & BGP Active Prefixes API
ASN Details
ASN
AS21309
Organisation
Acantho S.p.a
Name
CASAWEB-AS
Total IPv4 Addresses
61,262
Total IPv4 Prefixes
23
Total IPv6 Prefixes
1
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#3,792 out of 78,226
Registry
Ripe
Registered Country
IT flag IT
Registered Country Name
Italy
Registered Date
2002-07-19
Registration Last Change
2024-11-11
Receiving From

The list of active Autonomous Systems (ASs) which send traffic to that ASN.

ASN
Organisation
AS174
US flagCogent Communications
AS9498
IN flagBharti Airtel Limited
AS8220
GB flagCOLT Technology Services Group Limited
AS13237
DE flageuNetworks GmbH
AS6939
US flagHurricane Electric LLC
Showing 5 of 19
Transit To

The list of active Autonomous Systems (ASs) which receive traffic from that ASN.

 

ASN
Organisation
AS29177
IT flagAcantho S.p.a
AS8884
IT flagCRIF S.p.A.
AS31495
IT flagAcantho S.p.a
AS49535
IT flagE-Mind Srl
AS197807
IT flagEos sistemi s.r.l.
Showing 5 of 8
IPv4 Active Prefixes

This provides the list of IPv4 address space routes/prefixes currently announced on Border Gateway Protocol (BGP).

Prefix5.63.136.0/21
Range From5.63.136.0
Range To5.63.143.255
Prefix77.89.0.0/20
Range From77.89.0.0
Range To77.89.15.255
Prefix77.89.16.0/20
Range From77.89.16.0
Range To77.89.31.255
Prefix77.89.32.0/20
Range From77.89.32.0
Range To77.89.47.255
Prefix77.89.48.0/20
Range From77.89.48.0
Range To77.89.63.255
Showing 5 of 23
IPv6 Active Prefixes
Prefix2a03:c380::/32
Range From2a03:c380::
Range To2a03:c380:ffff:ffff:ffff:ffff:ffff:ffff
Autonomous System (AS) is a network (or collection of networks) that are all managed and supervised by a single entity or organisation. This tool provides a comprehensive ownership and connectivity report for any given AS number.