ASN AS243 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS243?

AS243 is listed under L3Harris Technologies, 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.

AS243 L3Harris Technologies, Inc.

ASN Lookup Tool

L3Harris Technologies, Inc. l3harris.com

US 131 Routes

AS Data

AS243

AS243 – L3Harris Technologies, Inc.

AS Number	243
AS Name	HARRIS-ATD-AS
Organization	L3Harris Technologies, Inc.(l3ht-z)
Country	US
Website	l3harris.com
Number of IPv4 Routes	131
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	1988-10-04

ASN Intelligence API for production workflows

Use ASN data for AS243 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
192.52.224.0/23	AS243	L3Harris Technologies, Inc.	L3Harris Technologies, Inc.	512
142.65.151.0/24	AS243	L3Harris Technologies, Inc.	L3Harris Technologies, Inc.	256
159.62.40.0/23	AS243	L3Harris Technologies, Inc.	L3Harris Technologies, Inc.	512
148.104.111.0/24	AS243	L3Harris Technologies, Inc.	L3Harris Technologies, Inc.	256
198.182.199.0/24	AS243	L3Harris Technologies, Inc.	L3Harris Technologies, Inc.	256
142.65.149.0/24	AS243	L3Harris Technologies, Inc.	L3Harris Technologies, Inc.	256
192.124.8.0/24	AS243	L3Harris Technologies, Inc.	L3Harris Technologies, Inc.	256
198.190.166.0/24	AS243	L3Harris Technologies, Inc.	L3Harris Technologies, Inc.	256
159.62.236.0/23	AS243	L3Harris Technologies, Inc.	L3Harris Technologies, Inc.	512
198.99.108.0/24	AS243	L3Harris Technologies, Inc.	L3Harris Technologies, 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:       243
ASName:         HARRIS-ATD-AS
ASHandle:       AS243
RegDate:        1988-10-04
Updated:        2023-01-31    
Ref:            https://rdap.arin.net/registry/autnum/243


OrgName:        L3Harris Technologies, Inc.
OrgId:          L3HT-Z
Address:        1025 W. NASA Blvd
City:           Melbourne
StateProv:      FL
PostalCode:     32119
Country:        US
RegDate:        2020-10-29
Updated:        2024-04-09
Ref:            https://rdap.arin.net/registry/entity/L3HT-Z


OrgDNSHandle: ZH41-ARIN
OrgDNSName:   Harris Corporation
OrgDNSPhone:  +1-321-724-3330 
OrgDNSEmail:  dnsadmin@harris.com
OrgDNSRef:    https://rdap.arin.net/registry/entity/ZH41-ARIN

OrgAbuseHandle: ABUSE8265-ARIN
OrgAbuseName:   Abuse Admins
OrgAbusePhone:  +1-321-727-9100 
OrgAbuseEmail:  abuse@l3harris.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE8265-ARIN

OrgTechHandle: IPADM889-ARIN
OrgTechName:   IP Admins
OrgTechPhone:  +1-321-727-9100 
OrgTechEmail:  IPAdmins@L3Harris.com
OrgTechRef:    https://rdap.arin.net/registry/entity/IPADM889-ARIN

OrgTechHandle: WHISE34-ARIN
OrgTechName:   Whisenant, Michael  
OrgTechPhone:  +1-331-727-9100 
OrgTechEmail:  michael.whisenant@l3harris.com
OrgTechRef:    https://rdap.arin.net/registry/entity/WHISE34-ARIN

OrgNOCHandle: IPADM889-ARIN
OrgNOCName:   IP Admins
OrgNOCPhone:  +1-321-727-9100 
OrgNOCEmail:  IPAdmins@L3Harris.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/IPADM889-ARIN

OrgRoutingHandle: WHISE34-ARIN
OrgRoutingName:   Whisenant, Michael  
OrgRoutingPhone:  +1-331-727-9100 
OrgRoutingEmail:  michael.whisenant@l3harris.com
OrgRoutingRef:    https://rdap.arin.net/registry/entity/WHISE34-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
AS32787	Akamai Technologies, Inc.	US

Upstreams

AS Number	Description	Country
AS32787	Akamai Technologies, Inc.	US

Contacts

Email Contacts

michael.whisenant@l3harris.com IPAdmins@L3Harris.com

Abuse Contacts

abuse@l3harris.com