What is ASN AS399935?

ASN AS399935 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS399935?

AS399935 is listed under Hayashimo LLC.

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.

AS399935 Hayashimo LLC | IPGeolocation.io

ASN Lookup Tool

Hayashimo LLC hayashimo.net

US 2 Routes

AS Data

AS399935

AS399935 – Hayashimo LLC

AS Number	399935
AS Name	HAYASHIMO
Organization	Hayashimo LLC(hl-732)
Country	US
Website	hayashimo.net
Number of IPv4 Routes	1
Number of IPv6 Routes	1
ASN type	ISP
Registry	ARIN
Date Allocated	2024-01-02

ASN Intelligence API for production workflows

Use ASN data for AS399935 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
23.168.216.0/24	AS399935	Hayashimo LLC	Hayashimo LLC	256
2602:f99d::/48	AS399935	Hayashimo LLC	Hayashimo LLC	~1×10²⁴

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:       399935
ASName:         HAYASHIMO
ASHandle:       AS399935
RegDate:        2024-01-02
Updated:        2024-01-02    
Ref:            https://rdap.arin.net/registry/autnum/399935


OrgName:        Hayashimo LLC
OrgId:          HL-732
Address:        1942 Broadway STE 314C
City:           Boulder
StateProv:      CO
PostalCode:     80302
Country:        US
RegDate:        2023-12-03
Updated:        2024-01-10
Ref:            https://rdap.arin.net/registry/entity/HL-732


OrgAbuseHandle: HAYAS20-ARIN
OrgAbuseName:   Hayashimo Abuse
OrgAbusePhone:  +1-202-302-3050 
OrgAbuseEmail:  abuse@hayashimo.net
OrgAbuseRef:    https://rdap.arin.net/registry/entity/HAYAS20-ARIN

OrgNOCHandle: HAYAS19-ARIN
OrgNOCName:   Hayashimo NOC
OrgNOCPhone:  +1-202-302-3050 
OrgNOCEmail:  noc@hayashimo.net
OrgNOCRef:    https://rdap.arin.net/registry/entity/HAYAS19-ARIN

OrgRoutingHandle: HAYAS19-ARIN
OrgRoutingName:   Hayashimo NOC
OrgRoutingPhone:  +1-202-302-3050 
OrgRoutingEmail:  noc@hayashimo.net
OrgRoutingRef:    https://rdap.arin.net/registry/entity/HAYAS19-ARIN

OrgTechHandle: HAYAS19-ARIN
OrgTechName:   Hayashimo NOC
OrgTechPhone:  +1-202-302-3050 
OrgTechEmail:  noc@hayashimo.net
OrgTechRef:    https://rdap.arin.net/registry/entity/HAYAS19-ARIN

OrgDNSHandle: HAYAS19-ARIN
OrgDNSName:   Hayashimo NOC
OrgDNSPhone:  +1-202-302-3050 
OrgDNSEmail:  noc@hayashimo.net
OrgDNSRef:    https://rdap.arin.net/registry/entity/HAYAS19-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
AS917	Misaka Network, Inc.	US

Upstreams

AS Number	Description	Country
AS917	Misaka Network, Inc.	US

Contacts

Email Contacts

noc@hayashimo.net

Abuse Contacts

abuse@hayashimo.net