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AS3581 Open Business Systems Inc.

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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Open Business Systems Inc. obs.net

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AS Data

AS3581

AS3581 – Open Business Systems Inc.

AS Number	3581
AS Name	OBS-NET
Organization	Open Business Systems Inc.(obs-23)
Country	US
Website	obs.net
Number of IPv4 Routes	0
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	1994-05-11

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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:       3581
ASName:         OBS-NET
ASHandle:       AS3581
RegDate:        1994-05-11
Updated:        2000-01-26    
Ref:            https://rdap.arin.net/registry/autnum/3581


OrgName:        Open Business Systems Inc.
OrgId:          OBS-23
Address:        175 Hansen Court Suite 109
City:           Wood Dale
StateProv:      IL
PostalCode:     60191
Country:        US
RegDate:        1994-05-11
Updated:        2012-10-10
Ref:            https://rdap.arin.net/registry/entity/OBS-23


OrgTechHandle: ZO8-ARIN
OrgTechName:   Hostmaster
OrgTechPhone:  +1-630-227-0023 
OrgTechEmail:  hostmaster@obs.net
OrgTechRef:    https://rdap.arin.net/registry/entity/ZO8-ARIN

OrgAbuseHandle: ZO8-ARIN
OrgAbuseName:   Hostmaster
OrgAbusePhone:  +1-630-227-0023 
OrgAbuseEmail:  hostmaster@obs.net
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ZO8-ARIN

RTechHandle: ZO8-ARIN
RTechName:   Hostmaster
RTechPhone:  +1-630-227-0023 
RTechEmail:  hostmaster@obs.net
RTechRef:    https://rdap.arin.net/registry/entity/ZO8-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 AS3581?

ASN AS3581 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS3581?

AS3581 is listed under Open Business Systems Inc..

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.