ASN Lookup Tool
AS3443 ESNET-AS

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ASN Extended Info API & BGP Active Prefixes API
ASN Details
ASN
AS3443
Organisation
ESnet
Name
ESNET-AS
Total IPv4 Addresses
256
Total IPv4 Prefixes
1
Total IPv6 Prefixes
0
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#70,205 out of 76,926
Registry
Arin
Registered Country
US flag US
Registered Country Name
United States of America (the)
Registered Date
1994-02-17
Registration Last Change
2012-04-10
Receiving From

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

ASN
Organisation
DE flagDeutsche Telekom AG
US flagLevel 3 Parent, LLC
US flagNTT America, Inc.
NL flagSURF B.V.
DK flagTDC Holding A/S
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IPv4 Active Prefixes

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

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.