ASN AS54651 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS54651?

AS54651 is listed under Black Duck Software, Inc..

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.

AS54651 Black Duck Software, Inc.

ASN Lookup Tool

Black Duck Software, Inc. dtype.org

US 3 Routes

AS Data

AS54651

AS54651 – Black Duck Software, Inc.

AS Number	54651
AS Name	BLACK-DUCK-SOFTWARE-01
Organization	Black Duck Software, Inc.(bds-141)
Country	US
Website	dtype.org
Number of IPv4 Routes	3
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2024-08-27

ASN Intelligence API for production workflows

Use ASN data for AS54651 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
209.51.34.0/24	AS54651	Black Duck Software, Inc.	Black Duck Software, Inc.	256
209.51.32.0/23	AS54651	Black Duck Software, Inc.	Black Duck Software, Inc.	512
149.117.68.0/24	AS54651	Black Duck Software, Inc.	Synopsys Inc.	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:       54651
ASName:         BLACK-DUCK-SOFTWARE-01
ASHandle:       AS54651
RegDate:        2024-08-27
Updated:        2024-08-27
Comment:        http://www.synopsys.com
Comment:        Standard NOC hours 
Comment:        7:00 AM to 11:00 PM PST    
Ref:            https://rdap.arin.net/registry/autnum/54651


OrgName:        Black Duck Software, Inc.
OrgId:          BDS-141
Address:        675 Almanor Ave
City:           Sunnyvale
StateProv:      CA
PostalCode:     94085
Country:        US
RegDate:        2024-05-22
Updated:        2025-11-26
Ref:            https://rdap.arin.net/registry/entity/BDS-141


OrgAbuseHandle: MAS199-ARIN
OrgAbuseName:   Streib, Michael Andrew
OrgAbusePhone:  +1-408-621-0064 
OrgAbuseEmail:  dtype@dtype.org
OrgAbuseRef:    https://rdap.arin.net/registry/entity/MAS199-ARIN

OrgTechHandle: OWENS401-ARIN
OrgTechName:   Owen, Scottie 
OrgTechPhone:  +1-408-209-9215 
OrgTechEmail:  scottie.owen@gmail.com
OrgTechRef:    https://rdap.arin.net/registry/entity/OWENS401-ARIN

OrgTechHandle: MANDO5-ARIN
OrgTechName:   Mandolare, Stephen 
OrgTechPhone:  +1-802-558-9141 
OrgTechEmail:  steve@mandolare.com
OrgTechRef:    https://rdap.arin.net/registry/entity/MANDO5-ARIN

OrgTechHandle: RUANK-ARIN
OrgTechName:   Ruan, Kenny 
OrgTechPhone:  +1-781-572-4673 
OrgTechEmail:  kruan84@gmail.com
OrgTechRef:    https://rdap.arin.net/registry/entity/RUANK-ARIN

OrgTechHandle: MAS199-ARIN
OrgTechName:   Streib, Michael Andrew
OrgTechPhone:  +1-408-621-0064 
OrgTechEmail:  dtype@dtype.org
OrgTechRef:    https://rdap.arin.net/registry/entity/MAS199-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
AS49915	Megaport UK Limited	GB
AS49915	Megaport (UK) Limited	GB

Upstreams

AS Number	Description	Country
AS49915	Megaport UK Limited	GB