What is ASN AS400866?

ASN AS400866 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS400866?

AS400866 is listed under Harmony Networks, 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.

AS400866 Harmony Networks, Inc.

ASN Lookup Tool

Harmony Networks, Inc. harmonynetworks.net

US 36 Routes

AS Data

AS400866

AS400866 – Harmony Networks, Inc.

AS Number	400866
AS Name	HM-NET
Organization	Harmony Networks, Inc.(hn-254)
Country	US
Website	harmonynetworks.net
Number of IPv4 Routes	35
Number of IPv6 Routes	1
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2025-02-24

ASN Intelligence API for production workflows

Use ASN data for AS400866 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
198.44.161.0/24	AS400866	Harmony Networks, Inc.	Harmony Networks, Inc.	256
23.251.54.0/24	AS400866	Harmony Networks, Inc.	zenlayer.inc	256
216.225.171.0/24	AS400866	Harmony Networks, Inc.	Harmony Networks, Inc.	256
216.225.163.0/24	AS400866	Harmony Networks, Inc.	Harmony Networks, Inc.	256
2a0b:21c1:602c::/48	AS400866	Harmony Networks, Inc.	Zenlayer Inc	~1×10²⁴
216.225.168.0/24	AS400866	Harmony Networks, Inc.	Harmony Networks, Inc.	256
191.101.252.0/24	AS400866	Harmony Networks, Inc.	Internet Utilities Europe and Asia Limited	256
23.95.177.0/24	AS400866	Harmony Networks, Inc.	Internet Utilities NA LLC	256
216.225.164.0/24	AS400866	Harmony Networks, Inc.	Harmony Networks, Inc.	256
185.148.69.0/24	AS400866	Harmony Networks, Inc.	Amazon.com, 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:       400866
ASName:         HM-NET
ASHandle:       AS400866
RegDate:        2025-02-24
Updated:        2025-02-24    
Ref:            https://rdap.arin.net/registry/autnum/400866


OrgName:        Harmony Networks, Inc.
OrgId:          HN-254
Address:        900 N. Alameda St. Suite 240
City:           Los Angeles
StateProv:      CA
PostalCode:     90012
Country:        US
RegDate:        2023-05-11
Updated:        2023-06-27
Ref:            https://rdap.arin.net/registry/entity/HN-254


OrgTechHandle: IPADM945-ARIN
OrgTechName:   IP Admin
OrgTechPhone:  +1-909-575-8560 
OrgTechEmail:  ipadmin@harmonynetworks.net
OrgTechRef:    https://rdap.arin.net/registry/entity/IPADM945-ARIN

OrgAbuseHandle: IPADM945-ARIN
OrgAbuseName:   IP Admin
OrgAbusePhone:  +1-909-575-8560 
OrgAbuseEmail:  ipadmin@harmonynetworks.net
OrgAbuseRef:    https://rdap.arin.net/registry/entity/IPADM945-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
AS21859	Zenlayer Inc	US

Upstreams

AS Number	Description	Country
AS21859	Zenlayer Inc	US

Legacy Routes

81.31.235.0/24 79.61.166.0/24 213.218.233.0/24