ASN Lookup Tool
AS21861 Private Use AS

Powered By:
ASN Extended Info API & BGP Active Prefixes API
ASN Details
ASN
AS21861
Organisation
Private Use AS
Name
Private Use AS
Total IPv4 Addresses
512
Total IPv4 Prefixes
2
Total IPv6 Prefixes
0
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#46,948 out of 76,964
Registry
NA
Registered Country
WORLD flag NA
Registered Country Name
NA
Registered Date
NA
Registration Last Change
NA
Receiving From

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

ASN
Organisation
US flagAT&T Services, Inc.
IPv4 Active Prefixes

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

Range From12.37.59.0
Range To12.37.59.255
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.