ASN AS46921 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS46921?

AS46921 is listed under SMITHGROUP Companies, 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.

AS46921 SMITHGROUP Companies, Inc.

ASN Lookup Tool

SMITHGROUP Companies, Inc. smithgroup.com

US 1 Routes

AS Data

AS46921

AS46921 – SMITHGROUP Companies, Inc.

AS Number	46921
AS Name	SMITHGROUP-ASN
Organization	SMITHGROUP Companies, Inc.(smith-36)
Country	US
Website	smithgroup.com
Number of IPv4 Routes	1
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2009-05-07

ASN Intelligence API for production workflows

Use ASN data for AS46921 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
204.126.73.0/24	AS46921	SMITHGROUP Companies, Inc.	SMITHGROUP Companies, 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:       46921
ASName:         SMITHGROUP-ASN
ASHandle:       AS46921
RegDate:        2009-05-07
Updated:        2019-06-18    
Ref:            https://rdap.arin.net/registry/autnum/46921


OrgName:        SMITHGROUP Companies, Inc.
OrgId:          SMITH-36
Address:        201 Depot Street, 2nd Floor
City:           ANN ARBOR
StateProv:      MI
PostalCode:     48104
Country:        US
RegDate:        2006-05-25
Updated:        2019-06-18
Ref:            https://rdap.arin.net/registry/entity/SMITH-36


OrgAbuseHandle: WOODE12-ARIN
OrgAbuseName:   WOODEN, KIMBERLY 
OrgAbusePhone:  +1-734-669-2686 
OrgAbuseEmail:  kimberly.wooden@smithgroupjjr.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/WOODE12-ARIN

OrgTechHandle: NETWO8952-ARIN
OrgTechName:   NetworkAnalysts
OrgTechPhone:  +1-734-662-4457 
OrgTechEmail:  SG-NetworkAnalysts@smithgroup.com
OrgTechRef:    https://rdap.arin.net/registry/entity/NETWO8952-ARIN

OrgNOCHandle: WOODE12-ARIN
OrgNOCName:   WOODEN, KIMBERLY 
OrgNOCPhone:  +1-734-669-2686 
OrgNOCEmail:  kimberly.wooden@smithgroupjjr.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/WOODE12-ARIN

OrgNOCHandle: NETWO8952-ARIN
OrgNOCName:   NetworkAnalysts
OrgNOCPhone:  +1-734-662-4457 
OrgNOCEmail:  SG-NetworkAnalysts@smithgroup.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/NETWO8952-ARIN

OrgTechHandle: WOODE12-ARIN
OrgTechName:   WOODEN, KIMBERLY 
OrgTechPhone:  +1-734-669-2686 
OrgTechEmail:  kimberly.wooden@smithgroupjjr.com
OrgTechRef:    https://rdap.arin.net/registry/entity/WOODE12-ARIN

OrgAbuseHandle: NETWO8952-ARIN
OrgAbuseName:   NetworkAnalysts
OrgAbusePhone:  +1-734-662-4457 
OrgAbuseEmail:  SG-NetworkAnalysts@smithgroup.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NETWO8952-ARIN

RNOCHandle: NETWO8951-ARIN
RNOCName:   NetworkAnalyst
RNOCPhone:  +1-734-662-4457 
RNOCEmail:  sg-networkanalyst@smithgroup.com
RNOCRef:    https://rdap.arin.net/registry/entity/NETWO8951-ARIN

RAbuseHandle: WOODE12-ARIN
RAbuseName:   WOODEN, KIMBERLY 
RAbusePhone:  +1-734-669-2686 
RAbuseEmail:  kimberly.wooden@smithgroupjjr.com
RAbuseRef:    https://rdap.arin.net/registry/entity/WOODE12-ARIN

RTechHandle: WOODE12-ARIN
RTechName:   WOODEN, KIMBERLY 
RTechPhone:  +1-734-669-2686 
RTechEmail:  kimberly.wooden@smithgroupjjr.com
RTechRef:    https://rdap.arin.net/registry/entity/WOODE12-ARIN

RTechHandle: NETWO8951-ARIN
RTechName:   NetworkAnalyst
RTechPhone:  +1-734-662-4457 
RTechEmail:  sg-networkanalyst@smithgroup.com
RTechRef:    https://rdap.arin.net/registry/entity/NETWO8951-ARIN

RAbuseHandle: NETWO8951-ARIN
RAbuseName:   NetworkAnalyst
RAbusePhone:  +1-734-662-4457 
RAbuseEmail:  sg-networkanalyst@smithgroup.com
RAbuseRef:    https://rdap.arin.net/registry/entity/NETWO8951-ARIN

RNOCHandle: WOODE12-ARIN
RNOCName:   WOODEN, KIMBERLY 
RNOCPhone:  +1-734-669-2686 
RNOCEmail:  kimberly.wooden@smithgroupjjr.com
RNOCRef:    https://rdap.arin.net/registry/entity/WOODE12-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
AS7018	AT&T Enterprises, LLC	US

Upstreams

AS Number	Description	Country
AS7018	AT&T Enterprises, LLC	US