What is ASN AS397990?

ASN AS397990 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS397990?

AS397990 is listed under Williamslabs 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.

AS397990 Williamslabs LLC | IPGeolocation.io

ASN Lookup Tool

Williamslabs LLC williamslabs.com

US 4 Routes

AS Data

AS397990

AS397990 – Williamslabs LLC

AS Number	397990
AS Name	WILLIAMSLABS-LLC
Organization	Williamslabs LLC(wl-645)
Country	US
Website	williamslabs.com
Number of IPv4 Routes	2
Number of IPv6 Routes	2
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2019-09-30

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Use ASN data for AS397990 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
2620:78:a000::/44	AS397990	Williamslabs LLC	Williamslabs LLC	~19×10²⁴
2620:78:a000::/48	AS397990	Williamslabs LLC	Williamslabs LLC	~1×10²⁴
44.31.141.0/24	AS397990	Williamslabs LLC	Amateur Radio Digital Communications	256
23.144.112.0/24	AS397990	Williamslabs LLC	Williamslabs LLC	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:       397990
ASName:         WILLIAMSLABS-LLC
ASHandle:       AS397990
RegDate:        2019-09-30
Updated:        2023-08-14    
Ref:            https://rdap.arin.net/registry/autnum/397990


OrgName:        Williamslabs LLC
OrgId:          WL-645
Address:        481 N. Santa Cruz Ave #232
City:           Los Gatos
StateProv:      CA
PostalCode:     95030
Country:        US
RegDate:        2019-09-27
Updated:        2025-08-24
Ref:            https://rdap.arin.net/registry/entity/WL-645


OrgTechHandle: WILLI3514-ARIN
OrgTechName:   Williams, Phelps  
OrgTechPhone:  +1-408-596-3432 
OrgTechEmail:  arin@williamslabs.com
OrgTechRef:    https://rdap.arin.net/registry/entity/WILLI3514-ARIN

OrgAbuseHandle: WILLI3514-ARIN
OrgAbuseName:   Williams, Phelps  
OrgAbusePhone:  +1-408-596-3432 
OrgAbuseEmail:  arin@williamslabs.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/WILLI3514-ARIN

RAbuseHandle: NOC33686-ARIN
RAbuseName:   Network Operations Center
RAbusePhone:  +1-408-596-3432 
RAbuseEmail:  arin-admin@williamslabs.com
RAbuseRef:    https://rdap.arin.net/registry/entity/NOC33686-ARIN

RTechHandle: NOC33686-ARIN
RTechName:   Network Operations Center
RTechPhone:  +1-408-596-3432 
RTechEmail:  arin-admin@williamslabs.com
RTechRef:    https://rdap.arin.net/registry/entity/NOC33686-ARIN

RNOCHandle: NOC33686-ARIN
RNOCName:   Network Operations Center
RNOCPhone:  +1-408-596-3432 
RNOCEmail:  arin-admin@williamslabs.com
RNOCRef:    https://rdap.arin.net/registry/entity/NOC33686-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
AS58057	Securebit AG	CH
AS398447	OHANACRAFT, LLC	US
AS35008	Kerfuffle, LLC	US
AS6939	Hurricane Electric LLC	US
AS8298	IPng Networks GmbH	CH
AS400587	Ryamer, LLC	US
AS22296	Vorsk LLC	US
AS52025	ParadoxNetworks Limited	GB
AS36236	NetActuate, Inc	US
AS53597	Hoyos Consulting LLC	US

Upstreams

AS Number	Description	Country
AS58057	Securebit AG	CH
AS6939	Hurricane Electric LLC	US
AS8298	IPng Networks GmbH	CH
AS400587	Ryamer, LLC	US