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AS399553 Trustmark Health Benefits

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

Trustmark Health Benefits trustmarkbenefits.com

US 2 Routes

AS Data

AS399553

AS399553 – Trustmark Health Benefits

AS Number	399553
AS Name	HB-MAIN-ASN
Organization	Trustmark Health Benefits(thb-16)
Country	US
Website	trustmarkbenefits.com
Number of IPv4 Routes	2
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2022-12-07

ASN Intelligence API for production workflows

Use ASN data for AS399553 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
12.235.233.0/24	AS399553	Trustmark Health Benefits	TRUSTMARK INS	256
12.13.210.0/24	AS399553	Trustmark Health Benefits	TRUSTMARK INS	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:       399553
ASName:         HB-MAIN-ASN
ASHandle:       AS399553
RegDate:        2022-12-07
Updated:        2022-12-07    
Ref:            https://rdap.arin.net/registry/autnum/399553


OrgName:        Trustmark Health Benefits
OrgId:          THB-16
Address:        400 N Field
City:           Lake Forest
StateProv:      IL
PostalCode:     60045
Country:        US
RegDate:        2022-09-20
Updated:        2022-11-22
Ref:            https://rdap.arin.net/registry/entity/THB-16


OrgAbuseHandle: CARDA7-ARIN
OrgAbuseName:   Cardamone, Brian 
OrgAbusePhone:  +1-847-283-2561 
OrgAbuseEmail:  bcardamone@trustmarkbenefits.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/CARDA7-ARIN

OrgTechHandle: CARDA7-ARIN
OrgTechName:   Cardamone, Brian 
OrgTechPhone:  +1-847-283-2561 
OrgTechEmail:  bcardamone@trustmarkbenefits.com
OrgTechRef:    https://rdap.arin.net/registry/entity/CARDA7-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
AS33491	Comcast Cable Communications, LLC	US
AS7018	AT&T Enterprises, LLC	US

Upstreams

AS Number	Description	Country
AS33491	Comcast Cable Communications, LLC	US
AS7018	AT&T Enterprises, LLC	US

Frequently Asked Questions

What is ASN AS399553?

ASN AS399553 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS399553?

AS399553 is listed under Trustmark Health Benefits.

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.