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AS3721 Mikuni Berkeley R&D Corp.

Q: Why is WHOIS data shown for an ASN?

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

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Mikuni Berkeley R&D Corp. mikuni.com

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AS Data

AS3721

AS3721 – Mikuni Berkeley R&D Corp.

AS Number	3721
AS Name	ASN-MIKUNI
Organization	Mikuni Berkeley R&D Corp.(mbrc)
Country	US
Website	mikuni.com
Number of IPv4 Routes	0
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	1994-07-25

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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:       3721
ASName:         ASN-MIKUNI
ASHandle:       AS3721
RegDate:        1994-07-25
Updated:        1994-07-25    
Ref:            https://rdap.arin.net/registry/autnum/3721


OrgName:        Mikuni Berkeley R&D Corp.
OrgId:          MBRC
Address:        4000 Lakeside Drive
City:           Richmond
StateProv:      CA
PostalCode:     94806
Country:        US
RegDate:        1994-07-25
Updated:        2012-10-10
Ref:            https://rdap.arin.net/registry/entity/MBRC


OrgAbuseHandle: KE23-ARIN
OrgAbuseName:   Ezumi, Koji 
OrgAbusePhone:  +1-408-542-0920 
OrgAbuseEmail:  koji@mikuni.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/KE23-ARIN

OrgTechHandle: KE23-ARIN
OrgTechName:   Ezumi, Koji 
OrgTechPhone:  +1-408-542-0920 
OrgTechEmail:  koji@mikuni.com
OrgTechRef:    https://rdap.arin.net/registry/entity/KE23-ARIN

RTechHandle: KE23-ARIN
RTechName:   Ezumi, Koji 
RTechPhone:  +1-408-542-0920 
RTechEmail:  koji@mikuni.com
RTechRef:    https://rdap.arin.net/registry/entity/KE23-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

Frequently Asked Questions

What is ASN AS3721?

ASN AS3721 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS3721?

AS3721 is listed under Mikuni Berkeley R&D Corp..

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.