What is ASN AS401620?

ASN AS401620 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS401620?

AS401620 is listed under Holocene Advisors, LP.

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.

AS401620 Holocene Advisors, LP

ASN Lookup Tool

Holocene Advisors, LP holoceneadvisors.com

US 1 Routes

AS Data

AS401620

AS401620 – Holocene Advisors, LP

AS Number	401620
AS Name	HOLOCENE ADVISORS LP
Organization	Holocene Advisors, LP(hal-177)
Country	US
Website	holoceneadvisors.com
Number of IPv4 Routes	1
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2025-01-16

ASN Intelligence API for production workflows

Use ASN data for AS401620 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
69.46.238.0/24	AS401620	Holocene Advisors, LP	Holocene Advisors, LP	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:       401620
ASName:         HOLOCENE ADVISORS LP
ASHandle:       AS401620
RegDate:        2025-01-16
Updated:        2025-01-16    
Ref:            https://rdap.arin.net/registry/autnum/401620


OrgName:        Holocene Advisors, LP
OrgId:          HAL-177
Address:        15 East 26th Street, 8th floor
City:           New York
StateProv:      NY
PostalCode:     10010
Country:        US
RegDate:        2025-01-06
Updated:        2025-01-10
Ref:            https://rdap.arin.net/registry/entity/HAL-177


OrgTechHandle: TECHN1952-ARIN
OrgTechName:   Technology Team
OrgTechPhone:  +1-646-779-6451 
OrgTechEmail:  technology@holoceneadvisors.com
OrgTechRef:    https://rdap.arin.net/registry/entity/TECHN1952-ARIN

OrgNOCHandle: TECHN1952-ARIN
OrgNOCName:   Technology Team
OrgNOCPhone:  +1-646-779-6451 
OrgNOCEmail:  technology@holoceneadvisors.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/TECHN1952-ARIN

OrgDNSHandle: TECHN1952-ARIN
OrgDNSName:   Technology Team
OrgDNSPhone:  +1-646-779-6451 
OrgDNSEmail:  technology@holoceneadvisors.com
OrgDNSRef:    https://rdap.arin.net/registry/entity/TECHN1952-ARIN

OrgAbuseHandle: TECHN1952-ARIN
OrgAbuseName:   Technology Team
OrgAbusePhone:  +1-646-779-6451 
OrgAbuseEmail:  technology@holoceneadvisors.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/TECHN1952-ARIN

OrgRoutingHandle: TECHN1952-ARIN
OrgRoutingName:   Technology Team
OrgRoutingPhone:  +1-646-779-6451 
OrgRoutingEmail:  technology@holoceneadvisors.com
OrgRoutingRef:    https://rdap.arin.net/registry/entity/TECHN1952-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
AS46887	Crown Castle Fiber LLC	US

Upstreams

AS Number	Description	Country
AS46887	Crown Castle Fiber LLC	US