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AS398722 Censys, Inc. | IPGeolocation.io

Q: Why is WHOIS data shown for an ASN?

WHOIS data provides registration and contact context for ASN ownership, administration, and operational reference.

ASN Lookup Tool

Censys, Inc. censys.com

US 4 Routes

AS Data

AS398722

AS398722 – Censys, Inc.

AS Number	398722
AS Name	CENSYS-ARIN-03
Organization	Censys, Inc.(censy)
Country	US
Website	censys.com
Number of IPv4 Routes	2
Number of IPv6 Routes	2
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2020-08-18

ASN Intelligence API for production workflows

Use ASN data for AS398722 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
2602:80d:1003::/48	AS398722	Censys, Inc.	Censys, Inc.	~1×10²⁴
199.45.154.0/24	AS398722	Censys, Inc.	Censys, Inc.	256
199.45.155.0/24	AS398722	Censys, Inc.	Censys, Inc.	256
2602:80d:1004::/48	AS398722	Censys, Inc.	Censys, Inc.	~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:       398722
ASName:         CENSYS-ARIN-03
ASHandle:       AS398722
RegDate:        2020-08-18
Updated:        2020-08-18    
Ref:            https://rdap.arin.net/registry/autnum/398722


OrgName:        Censys, Inc.
OrgId:          CENSY
Address:        116 1/2 S Main Street
City:           Ann Arbor
StateProv:      MI
PostalCode:     48104
Country:        US
RegDate:        2018-08-06
Updated:        2019-08-03
Comment:        https://censys.io
Ref:            https://rdap.arin.net/registry/entity/CENSY


OrgAbuseHandle: CAT20-ARIN
OrgAbuseName:   Censys Abuse Team
OrgAbusePhone:  +1-248-629-0125 
OrgAbuseEmail:  scan-abuse@censys.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/CAT20-ARIN

OrgNOCHandle: COT12-ARIN
OrgNOCName:   Censys Operations Team
OrgNOCPhone:  +1-248-629-0125 
OrgNOCEmail:  ops@censys.io
OrgNOCRef:    https://rdap.arin.net/registry/entity/COT12-ARIN

OrgTechHandle: COT12-ARIN
OrgTechName:   Censys Operations Team
OrgTechPhone:  +1-248-629-0125 
OrgTechEmail:  ops@censys.io
OrgTechRef:    https://rdap.arin.net/registry/entity/COT12-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
AS3491	PCCW Global, Inc.	US
AS3491	PCCW Global	US
AS2914	NTT America, Inc.	US

Upstreams

AS Number	Description	Country
AS3491	PCCW Global, Inc.	US
AS2914	NTT America, Inc.	US

Contacts

Email Contacts

ops@censys.io

Abuse Contacts

scan-abuse@censys.com

Frequently Asked Questions

What is ASN AS398722?

ASN AS398722 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS398722?

AS398722 is listed under Censys, Inc..

What do peers, upstreams, and downstreams mean?

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 included here?

WHOIS provides registration and contact context for ASN ownership, administration, and operational reference.

How can I access full ASN table data?

This page previews large ASN datasets. Use See more to load additional rows, and upgrade your plan to view complete peer, route, upstream, and downstream data.