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ASN Lookup Tool
AS40021 CONTABO-40021

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ASN Extended Info API & BGP Active Prefixes API
ASN Details
ASN
AS40021
Organisation
Contabo Inc.
Name
CONTABO-40021
Total IPv4 Addresses
129,280
Total IPv4 Prefixes
84
Total IPv6 Prefixes
4
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#1,711 out of 79,041
Registry
Arin
Registered Country
US flag US
Registered Country Name
United States of America (the)
Registered Date
2023-05-16
Registration Last Change
2025-07-14
Receiving From

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

ASN
Organisation
AS3356
US flagLevel 3 Parent, LLC
AS174
US flagCogent Communications
AS46887
US flagCrown Castle Fiber LLC
IPv4 Active Prefixes

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

Prefix5.180.151.0/24
Range From5.180.151.0
Range To5.180.151.255
Prefix5.252.52.0/23
Range From5.252.52.0
Range To5.252.53.255
Prefix5.252.54.0/23
Range From5.252.54.0
Range To5.252.55.255
Prefix31.220.96.0/21
Range From31.220.96.0
Range To31.220.103.255
Prefix38.105.209.0/24
Range From38.105.209.0
Range To38.105.209.255
Showing 5 of 84
IPv6 Active Prefixes
Prefix2605:a140::/32
Range From2605:a140::
Range To2605:a140:ffff:ffff:ffff:ffff:ffff:ffff
Prefix2605:a141::/32
Range From2605:a141::
Range To2605:a141:ffff:ffff:ffff:ffff:ffff:ffff
Prefix2605:a142::/32
Range From2605:a142::
Range To2605:a142:ffff:ffff:ffff:ffff:ffff:ffff
Prefix2605:a143::/32
Range From2605:a143::
Range To2605:a143:ffff:ffff:ffff:ffff:ffff:ffff