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ASN Lookup Tool
AS397990 WILLIAMSLABS-LLC

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ASN Extended Info API & BGP Active Prefixes API
ASN Details
ASN
AS397990
Organisation
Williamslabs LLC
Name
WILLIAMSLABS-LLC
Total IPv4 Addresses
512
Total IPv4 Prefixes
2
Total IPv6 Prefixes
1
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#47,395 out of 78,154
Registry
Arin
Registered Country
US flag US
Registered Country Name
United States of America (the)
Registered Date
2019-09-30
Registration Last Change
2023-08-14
Receiving From

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

ASN
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AS6939
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AS36236
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AS22296
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AS35008
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AS199518
US flagGregory Shapiro
Showing 5 of 7
IPv4 Active Prefixes

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

Prefix23.144.112.0/24
Range From23.144.112.0
Range To23.144.112.255
Prefix44.31.141.0/24
Range From44.31.141.0
Range To44.31.141.255
IPv6 Active Prefixes
Prefix2620:78:a000::/48
Range From2620:78:a000::
Range To2620:78:a000: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.