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AS21553 Aspirus, 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

Aspirus, Inc. aspirus.org

US 2 Routes

AS Data

AS21553

AS21553 – Aspirus, Inc.

AS Number	21553
AS Name	ASP-MAIN
Organization	Aspirus, Inc.(aspir-13)
Country	US
Website	aspirus.org
Number of IPv4 Routes	2
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2017-09-19

ASN Intelligence API for production workflows

Use ASN data for AS21553 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
216.99.223.0/24	AS21553	Aspirus, Inc.	Aspirus, Inc.	256
204.10.109.0/24	AS21553	Aspirus, Inc.	Aspirus, 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:       21553
ASName:         ASP-MAIN
ASHandle:       AS21553
RegDate:        2017-09-19
Updated:        2017-09-19    
Ref:            https://rdap.arin.net/registry/autnum/21553


OrgName:        Aspirus, Inc.
OrgId:          ASPIR-13
Address:        333 Pine Ridge Bvld
City:           Wausau
StateProv:      WI
PostalCode:     54401
Country:        US
RegDate:        2016-07-06
Updated:        2024-11-25
Ref:            https://rdap.arin.net/registry/entity/ASPIR-13


OrgAbuseHandle: NETWO9799-ARIN
OrgAbuseName:   Networking, Aspirus 
OrgAbusePhone:  +1-715-847-2000 
OrgAbuseEmail:  aspirus.networking@aspirus.org
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NETWO9799-ARIN

OrgTechHandle: NETWO9799-ARIN
OrgTechName:   Networking, Aspirus 
OrgTechPhone:  +1-715-847-2000 
OrgTechEmail:  aspirus.networking@aspirus.org
OrgTechRef:    https://rdap.arin.net/registry/entity/NETWO9799-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
AS40264	Charter Communications LLC	US
AS10352	Solarus	US

Upstreams

AS Number	Description	Country
AS40264	Charter Communications LLC	US
AS10352	Solarus	US

Frequently Asked Questions

What is ASN AS21553?

ASN AS21553 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS21553?

AS21553 is listed under Aspirus, 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.