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ASN Lookup Tool
AS4251000001 Private Use AS

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ASN Extended Info API & BGP Active Prefixes API
ASN Details
ASN
AS4251000001
Organisation
Private Use AS
Name
Private Use AS
Total IPv4 Addresses
1,024
Total IPv4 Prefixes
2
Total IPv6 Prefixes
0
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#30,131 out of 77,675
Registry
Registered Country
WORLD flag
Registered Country Name
Registered Date
Registration Last Change
Receiving From

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

ASN
Organisation
AS7018
US flagAT&T Services, Inc.
AS7922
US flagComcast Cable Communications, LLC
AS3356
US flagLevel 3 Parent, LLC
AS174
US flagCogent Communications
AS3257
US flagGTT Communications Inc.
Showing 5 of 43
IPv4 Active Prefixes

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

Prefix23.34.56.0/23
Range From23.34.56.0
Range To23.34.57.255
Prefix23.213.156.0/23
Range From23.213.156.0
Range To23.213.157.255
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.