ASN AS36291 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS36291?

AS36291 is listed under Sanofi.

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.

AS36291 Sanofi | IPGeolocation.io

ASN Lookup Tool

Sanofi sanofi.com

US 9 Routes

AS Data

AS36291

AS36291 – Sanofi

AS Number	36291
AS Name	SANOFI
Organization	Sanofi(sus-23)
Country	US
Website	sanofi.com
Number of IPv4 Routes	9
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2005-11-16

ASN Intelligence API for production workflows

Use ASN data for AS36291 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

Access complete peers, upstreams, downstreams, routes, WHOIS, and contact intelligence via our API. Learn more

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
168.124.0.0/16	AS36291	Sanofi	Sanofi	65536
155.65.251.0/24	AS36291	Sanofi	Sanofi	256
155.65.0.0/16	AS36291	Sanofi	Sanofi	65536
205.137.76.0/24	AS36291	Sanofi	Sanofi	256
157.206.0.0/16	AS36291	Sanofi	Sanofi	65536
205.137.77.0/24	AS36291	Sanofi	Sanofi	256
205.137.78.0/23	AS36291	Sanofi	Sanofi	512
192.234.110.0/24	AS36291	Sanofi	Sanofi	256
192.234.111.0/24	AS36291	Sanofi	Sanofi	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:       36291
ASName:         SANOFI
ASHandle:       AS36291
RegDate:        2005-11-16
Updated:        2019-10-03    
Ref:            https://rdap.arin.net/registry/autnum/36291


OrgName:        Sanofi
OrgId:          SUS-23
Address:        55 Corporate Drive
City:           Bridgewater
StateProv:      NJ
PostalCode:     08807
Country:        US
RegDate:        2018-05-25
Updated:        2020-05-08
Ref:            https://rdap.arin.net/registry/entity/SUS-23


OrgAbuseHandle: SUNXI6-ARIN
OrgAbuseName:   Sun, Xianyi 
OrgAbusePhone:  +1-201-779-4528 
OrgAbuseEmail:  xianyi.sun@sanofi.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/SUNXI6-ARIN

OrgTechHandle: CITSI-ARIN
OrgTechName:   CITS IPADMIN
OrgTechPhone:  +1-908-981-4037 
OrgTechEmail:  etsipadmin@sanofi.com
OrgTechRef:    https://rdap.arin.net/registry/entity/CITSI-ARIN

OrgAbuseHandle: CITSI-ARIN
OrgAbuseName:   CITS IPADMIN
OrgAbusePhone:  +1-908-981-4037 
OrgAbuseEmail:  etsipadmin@sanofi.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/CITSI-ARIN

OrgTechHandle: SUNXI6-ARIN
OrgTechName:   Sun, Xianyi 
OrgTechPhone:  +1-201-779-4528 
OrgTechEmail:  xianyi.sun@sanofi.com
OrgTechRef:    https://rdap.arin.net/registry/entity/SUNXI6-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
AS3549	Level 3 Communications, Inc. (GBLX)	US
AS3356	Level 3 Parent, LLC	US

Upstreams

AS Number	Description	Country
AS3356	Level 3 Parent, LLC	US