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ASN Lookup Tool
AS401866 MASTER-IT-SUPPORT

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ASN Extended Info API & BGP Active Prefixes API
ASN Details
ASN
AS401866
Organisation
Master IT Support
Name
MASTER-IT-SUPPORT
Total IPv4 Addresses
256
Total IPv4 Prefixes
1
Total IPv6 Prefixes
1
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#59,885 out of 78,836
Registry
Arin
Registered Country
PR flag PR
Registered Country Name
Puerto Rico
Registered Date
2025-07-24
Registration Last Change
2025-07-29
Receiving From

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

ASN
Organisation
AS46962
PR flagHRCOM
IPv4 Active Prefixes

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

Prefix23.143.4.0/24
Range From23.143.4.0
Range To23.143.4.255
IPv6 Active Prefixes
Prefix2604:19a0:1::/48
Range From2604:19a0:1::
Range To2604:19a0:1:ffff:ffff:ffff:ffff:ffff