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ASN Lookup Tool
AS203619 CASTRO-INTERNET

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ASN Extended Info API & BGP Active Prefixes API
ASN Details
ASN
AS203619
Organisation
Tomas Oliveira Valente Leite de Castro
Name
CASTRO-INTERNET
Total IPv4 Addresses
256
Total IPv4 Prefixes
1
Total IPv6 Prefixes
11
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#73,566 out of 77,323
Registry
Ripe
Registered Country
PT flag PT
Registered Country Name
Portugal
Registered Date
2022-07-28
Registration Last Change
2023-04-11
Receiving From

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

ASN
Organisation
AS47787
PT flagEDGOO NETWORKS UNIPESSOAL LDA
AS200454
PT flagTomas Oliveira Valente Leite de Castro
AS397525
US flagAlpha1Servers, LLC
IPv4 Active Prefixes

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

Prefix199.16.241.0/24
Range From199.16.241.0
Range To199.16.241.255
IPv6 Active Prefixes
Prefix2602:faa5:5::/48
Range From2602:faa5:5::
Range To2602:faa5:5:ffff:ffff:ffff:ffff:ffff
Prefix2a06:a005:1410::/44
Range From2a06:a005:1410::
Range To2a06:a005:141f:ffff:ffff:ffff:ffff:ffff
Prefix2a06:a005:1420::/44
Range From2a06:a005:1420::
Range To2a06:a005:142f:ffff:ffff:ffff:ffff:ffff
Prefix2a06:a005:1430::/44
Range From2a06:a005:1430::
Range To2a06:a005:143f:ffff:ffff:ffff:ffff:ffff
Prefix2a06:a005:1440::/44
Range From2a06:a005:1440::
Range To2a06:a005:144f:ffff:ffff:ffff:ffff:ffff
Showing 5 of 11
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.