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AS21609 Sentinel Benefits Group, INC

Q: Why is WHOIS data shown for an ASN?

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

ASN Lookup Tool

Sentinel Benefits Group, INC sentinelgroup.com

US 1 Routes

AS Data

AS21609

AS21609 – Sentinel Benefits Group, INC

AS Number	21609
AS Name	SENTINEL-BENEFITS-GROUP
Organization	Sentinel Benefits Group, INC(sbg-26)
Country	US
Website	sentinelgroup.com
Number of IPv4 Routes	1
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2014-03-10

ASN Intelligence API for production workflows

Use ASN data for AS21609 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
40.141.58.0/24	AS21609	Sentinel Benefits Group, INC	SENTINEL BENEFITS GROUP	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:       21609
ASName:         SENTINEL-BENEFITS-GROUP
ASHandle:       AS21609
RegDate:        2014-03-10
Updated:        2014-03-10
Comment:        www.sentinelgroup.com    
Ref:            https://rdap.arin.net/registry/autnum/21609


OrgName:        Sentinel Benefits Group, INC
OrgId:          SBG-26
Address:        100 Quannapowitt Pkwy, Suite 300
City:           Wakefield
StateProv:      MA
PostalCode:     01880
Country:        US
RegDate:        2014-02-11
Updated:        2015-02-10
Comment:        https://www.sentinelgroup.com/
Ref:            https://rdap.arin.net/registry/entity/SBG-26


OrgAbuseHandle: SCLAF2-ARIN
OrgAbuseName:   Sclafani, Sal 
OrgAbusePhone:  +1-781-914-1328 
OrgAbuseEmail:  Todd.Larson@sentinelgroup.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/SCLAF2-ARIN

OrgNOCHandle: SCLAF2-ARIN
OrgNOCName:   Sclafani, Sal 
OrgNOCPhone:  +1-781-914-1328 
OrgNOCEmail:  Todd.Larson@sentinelgroup.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/SCLAF2-ARIN

OrgTechHandle: SCLAF2-ARIN
OrgTechName:   Sclafani, Sal 
OrgTechPhone:  +1-781-914-1328 
OrgTechEmail:  Todd.Larson@sentinelgroup.com
OrgTechRef:    https://rdap.arin.net/registry/entity/SCLAF2-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
AS27552	TowardEX Technologies International, Inc.	US

Upstreams

AS Number	Description	Country
AS27552	TowardEX Technologies International, Inc.	US

Frequently Asked Questions

What is ASN AS21609?

ASN AS21609 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS21609?

AS21609 is listed under Sentinel Benefits Group, 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.