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AS3443 ESnet | IPGeolocation.io

Q: Why is WHOIS data shown for an ASN?

WHOIS data provides registration and contact context for ASN ownership, administration, and operational reference.

ASN Lookup Tool

ESnet es.net

US 1 Routes

AS Data

AS3443

AS3443 – ESnet

AS Number	3443
AS Name	ESNET-AS
Organization	ESnet(ensn-z)
Country	US
Website	es.net
Number of IPv4 Routes	1
Number of IPv6 Routes	0
ASN type	ISP
Registry	ARIN
Date Allocated	1994-02-17

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Use ASN data for AS3443 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
192.188.22.0/24	AS3443	ESnet	ESnet	256

Raw Whois Response

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#


ASNumber:       3425 - 3444
ASName:         ESNET-AS
ASHandle:       AS3425
RegDate:        1994-02-17
Updated:        2012-04-10    
Ref:            https://rdap.arin.net/registry/autnum/3425


OrgName:        ESnet
OrgId:          ENSN-Z
Address:        Berkeley Lab
Address:        1 Cyclotron Road MS 59R3103
City:           Berkeley
StateProv:      CA
PostalCode:     94720
Country:        US
RegDate:        2010-01-22
Updated:        2023-10-04
Ref:            https://rdap.arin.net/registry/entity/ENSN-Z


OrgTechHandle: EH1-ARIN
OrgTechName:   Energy Sciences Network
OrgTechPhone:  +1-510-486-7607 
OrgTechEmail:  hostmaster@es.net
OrgTechRef:    https://rdap.arin.net/registry/entity/EH1-ARIN

OrgAbuseHandle: EH1-ARIN
OrgAbuseName:   Energy Sciences Network
OrgAbusePhone:  +1-510-486-7607 
OrgAbuseEmail:  hostmaster@es.net
OrgAbuseRef:    https://rdap.arin.net/registry/entity/EH1-ARIN


#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#

Parsed Whois Response

Peers

AS Number	Description	Country
AS293	ESnet	US

Upstreams

AS Number	Description	Country
AS293	ESnet	US

Frequently Asked Questions

What is ASN AS3443?

ASN AS3443 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS3443?

AS3443 is listed under ESnet.

What do peers, upstreams, and downstreams mean?

Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.

What are routes and IP ranges for an ASN?

Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.

Why is WHOIS data included here?

WHOIS provides registration and contact context for ASN ownership, administration, and operational reference.

How can I access full ASN table data?

This page previews large ASN datasets. Use See more to load additional rows, and upgrade your plan to view complete peer, route, upstream, and downstream data.