ASN AS27357 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS27357?

AS27357 is listed under Rackspace Hosting.

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.

AS27357 Rackspace Hosting | IPGeolocation.io

ASN Lookup Tool

Rackspace Hosting rackspace.com

US 51 Routes

AS Data

AS27357

AS27357 – Rackspace Hosting

AS Number	27357
AS Name	RACKSPACE
Organization	Rackspace Hosting(racks-8)
Country	US
Website	rackspace.com
Number of IPv4 Routes	50
Number of IPv6 Routes	1
ASN type	HOSTING
Registry	ARIN
Date Allocated	2003-02-20

ASN Intelligence API for production workflows

Use ASN data for AS27357 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

Access complete peers, upstreams, downstreams, routes, WHOIS, and contact intelligence via our API. Learn more

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
173.203.184.94/32	AS27357	Rackspace Hosting	Rackspace	1
104.130.160.0/19	AS27357	Rackspace Hosting	Cloud Servers Cell 0001 0003 IAD	8192
142.0.184.0/22	AS27357	Rackspace Hosting	SocketLabs	1024
65.61.152.0/24	AS27357	Rackspace Hosting	TravTech	256
173.203.128.0/18	AS27357	Rackspace Hosting	Legisym	16384
104.239.224.0/20	AS27357	Rackspace Hosting	Village Pharmacy	4096
162.209.96.0/19	AS27357	Rackspace Hosting	Rackspace Hosting	8192
69.20.0.0/17	AS27357	Rackspace Hosting	Rackspace Hosting	32768
23.253.128.0/19	AS27357	Rackspace Hosting	Rackspace Hosting	8192
74.205.0.0/19	AS27357	Rackspace Hosting	Rackspace Hosting	8192

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:       27357
ASName:         RACKSPACE
ASHandle:       AS27357
RegDate:        2003-02-20
Updated:        2012-02-24    
Ref:            https://rdap.arin.net/registry/autnum/27357



OrgName:        Rackspace Hosting
OrgId:          RACKS-8
Address:        1718 Dry Creek Way
Address:        Ste 115
City:           San Antonio
StateProv:      TX
PostalCode:     78259-1837
Country:        US
RegDate:        2010-03-29
Updated:        2025-01-31
Ref:            https://rdap.arin.net/registry/entity/RACKS-8


OrgNOCHandle: HANSE157-ARIN
OrgNOCName:   Hansell, Chris 
OrgNOCPhone:  +1-210-312-4000 
OrgNOCEmail:  hostmaster@rackspace.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/HANSE157-ARIN

OrgAbuseHandle: ABUSE45-ARIN
OrgAbuseName:   Abuse Desk
OrgAbusePhone:  +1-210-312-4000 
OrgAbuseEmail:  abuse@rackspace.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE45-ARIN

OrgTechHandle: HANSE157-ARIN
OrgTechName:   Hansell, Chris 
OrgTechPhone:  +1-210-312-4000 
OrgTechEmail:  hostmaster@rackspace.com
OrgTechRef:    https://rdap.arin.net/registry/entity/HANSE157-ARIN

OrgTechHandle: ZR9-ARIN
OrgTechName:   Rackspace, com 
OrgTechPhone:  +1-210-312-4000 
OrgTechEmail:  hostmaster@rackspace.com
OrgTechRef:    https://rdap.arin.net/registry/entity/ZR9-ARIN

OrgTechHandle: IPADM17-ARIN
OrgTechName:   IPADMIN
OrgTechPhone:  +1-210-312-4000 
OrgTechEmail:  hostmaster@rackspace.com
OrgTechRef:    https://rdap.arin.net/registry/entity/IPADM17-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
AS396479	Mailgun Technologies Inc.	US
AS12200	Rackspace Hosting	US

Upstreams

AS Number	Description	Country
AS12200	Rackspace Hosting	US

Downstreams

AS Number	Description	Country
AS396479	Mailgun Technologies Inc.	US

Contacts

Email Contacts

hostmaster@rackspace.com

Abuse Contacts

abuse@rackspace.com