ASN AS6373 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS6373?

AS6373 is listed under Opus One.

What do peers, upstreams, and downstreams mean in ASN data?

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 shown for an ASN?

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

How can I access the full ASN tables?

The page shows a preview of large ASN datasets. Use the page controls to load more rows, and upgrade to a paid plan for complete access.

AS6373 Opus One | IPGeolocation.io

ASN Lookup Tool

Opus One opus1.com

US 9 Routes

AS Data

AS6373

AS6373 – Opus One

AS Number	6373
AS Name	OPUS1
Organization	Opus One(opus)
Country	US
Website	opus1.com
Number of IPv4 Routes	8
Number of IPv6 Routes	1
ASN type	BUSINESS
Registry	ARIN
Date Allocated	1996-03-25

ASN Intelligence API for production workflows

Use ASN data for AS6373 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
204.27.149.0/24	AS6373	Opus One	Aspect Teleservices, Inc	256
192.245.15.0/24	AS6373	Opus One	SRI International	256
192.35.195.0/24	AS6373	Opus One	Opus One	256
204.52.218.0/24	AS6373	Opus One	California Senate Rules Committee	256
2607:7c80:57::/48	AS6373	Opus One	SRDF, Inc.	~1×10²⁴
199.79.152.0/24	AS6373	Opus One	Ventana Corporation	256
207.182.32.0/19	AS6373	Opus One	Opus One	8192
192.245.13.0/24	AS6373	Opus One	Opus One	256
192.245.12.0/24	AS6373	Opus One	Opus One	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:       6373
ASName:         OPUS1
ASHandle:       AS6373
RegDate:        1996-03-25
Updated:        1996-03-25    
Ref:            https://rdap.arin.net/registry/autnum/6373


OrgName:        Opus One
OrgId:          OPUS
Address:        1404 East Lind Road
City:           Tucson
StateProv:      AZ
PostalCode:     85719
Country:        US
RegDate:        1988-05-06
Updated:        2004-01-22
Ref:            https://rdap.arin.net/registry/entity/OPUS


OrgAbuseHandle: OOAC-ARIN
OrgAbuseName:   Opus One Abuse Contact
OrgAbusePhone:  +1-520-324-0494 
OrgAbuseEmail:  abuse@opus1.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/OOAC-ARIN

OrgTechHandle: JMS56-ARIN
OrgTechName:   Snyder, Joel M.
OrgTechPhone:  +1-520-324-0494 
OrgTechEmail:  Joel.Snyder@opus1.com
OrgTechRef:    https://rdap.arin.net/registry/entity/JMS56-ARIN

RTechHandle: JMS56-ARIN
RTechName:   Snyder, Joel M.
RTechPhone:  +1-520-324-0494 
RTechEmail:  Joel.Snyder@opus1.com
RTechRef:    https://rdap.arin.net/registry/entity/JMS56-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
AS7247	Mojo Networks	US
AS58057	Securebit AG	CH
AS398447	OHANACRAFT, LLC	US
AS35008	Kerfuffle, LLC	US
AS8298	IPng Networks GmbH	CH
AS400587	Ryamer, LLC	US
AS209	CenturyLink Communications, LLC	US
AS22296	Vorsk LLC	US
AS52025	ParadoxNetworks Limited	GB
AS36236	NetActuate, Inc	US