1. All IP Ranges
  2. 173.0.0.0/8
  3. 173.203.0.0/16
  4. AS19994  | 173.203.0.0/17

173.203.0.0/17

AS19994  ·  Rackspace Hosting

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Summary

Country United States
Domain rackspace.com
ASN AS19994
Registry ARIN
ID RSCP-NET-4

WHOIS Details

NetHandle:      NET-173-203-0-0-1
OrgID:          RACKS-8
Parent:         NET-173-0-0-0-0
NetName:        RSCP-NET-4
NetRange:       173.203.0.0 - 173.203.255.255
NetType:        allocation
RegDate:        2009-10-02
Updated:        2012-02-24
Source:         ARIN


OrgID:          RACKS-8
OrgName:        Rackspace Hosting
CanAllocate:    
Street:         1718 Dry Creek Way
Street:         Ste 115
City:           San Antonio
State/Prov:     TX
Country:        US
PostalCode:     78259-1837
RegDate:        2010-03-29
Updated:        2025-01-31
OrgAdminHandle: IPADM17-ARIN
OrgTechHandle:  HANSE157-ARIN
OrgTechHandle:  IPADM17-ARIN
OrgTechHandle:  ZR9-ARIN
OrgAbuseHandle: ABUSE45-ARIN
OrgNOCHandle:   HANSE157-ARIN
Source:         ARIN


POCHandle:      ZR9-ARIN
IsRole:         N
LastName:       Rackspace
FirstName:      com
Street:         5000 Walzem Rd
City:           San Antonio
State/Prov:     TX
Country:        US
PostalCode:     78218
RegDate:        2000-02-08
Updated:        2022-10-31
OfficePhone:    +1-210-312-4000
Mailbox:        hostmaster@rackspace.com
Source:         ARIN


POCHandle:      HANSE157-ARIN
IsRole:         N
LastName:       Hansell
FirstName:      Chris
Street:         1718 Dry Creek Way
City:           San Antonio
State/Prov:     TX
Country:        US
PostalCode:     78259
RegDate:        2015-09-11
Updated:        2025-05-06
OfficePhone:    +1-210-312-4000
Mailbox:        chris.hansell@rackspace.com
Mailbox:        hostmaster@rackspace.com
Source:         ARIN


POCHandle:      IPADM17-ARIN
IsRole:         Y
LastName:       IPADMIN
FirstName:      
Street:         1718 Dry Creek Way 
Street:         Ste 115
City:           San Antonio
State/Prov:     TX
Country:        US
PostalCode:     78259-1837
RegDate:        2002-09-16
Updated:        2025-06-23
OfficePhone:    +1-210-312-4000
Mailbox:        hostmaster@rackspace.com
Source:         ARIN


POCHandle:      ABUSE45-ARIN
IsRole:         Y
LastName:       Abuse Desk
FirstName:      
Street:         5000 Walzem Rd
City:           San Antonio
State/Prov:     TX
Country:        US
PostalCode:     78218
RegDate:        2002-09-25
Updated:        2025-09-29
OfficePhone:    +1-210-312-4000
Mailbox:        abuse@rackspace.com
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 173.203.0.0/16

No nearby ranges found.

Hosted domains

There are 3,648 domain names hosted across 960 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
173.203.44.122 rackgivesback.com 295
173.203.14.210 getflexsite.com 261
173.203.23.178 hospitalesskenazi.com 242
173.203.63.203 floridamortgagenerd.com 156
173.203.67.129 ziltrex.co.za 137
173.203.40.148 solucionwebcloud.com 134
173.203.64.147 capecanaveralparking.com 85
173.203.30.100 hiphubbub.com 78
173.203.65.201 christianwholesale.com 70
173.203.59.143 wildfirebuzz.net 70
173.203.62.16 imarketsolutionschat.com 37
173.203.15.39 lcatterton.com 32
173.203.107.239 einnews.com 31
173.203.107.183 einnews.com 31
173.203.40.159 monticello.com.gt 29
173.203.63.144 musicmaster.cloud 29
173.203.91.163 meridiancsinc.com 27
173.203.103.28 magnusproperty.com 27
173.203.79.24 menlopark.me 26
173.203.38.0 itslesseratplesser.com 24

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.
Useful for Cybersecurity
Read more

Pingable IPs

1,756 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
173.203.65.204 AS19994 Rackspace Hosting 1.30ms from Chicago, US
173.203.127.187 AS19994 Rackspace Hosting 1.32ms from Chicago, US
173.203.84.210 AS19994 Rackspace Hosting 1.24ms from Chicago, US
173.203.49.4 AS19994 Rackspace Hosting 1.28ms from Chicago, US
173.203.73.1 AS19994 Rackspace Hosting 1.34ms from Chicago, US
173.203.38.9 AS19994 Rackspace Hosting 1.29ms from Chicago, US
173.203.97.138 AS19994 Rackspace Hosting 1.20ms from Chicago, US
173.203.47.124 AS19994 Rackspace Hosting 1.28ms from Chicago, US
173.203.99.32 AS19994 Rackspace Hosting 1.22ms from Chicago, US
173.203.61.15 AS19994 Rackspace Hosting 1.22ms from Chicago, US
173.203.3.31 AS19994 Rackspace Hosting 1.11ms from Chicago, US
173.203.113.2 AS19994 Rackspace Hosting 1.28ms from Chicago, US
173.203.51.251 AS19994 Rackspace Hosting 1.24ms from Chicago, US
173.203.103.120 AS19994 Rackspace Hosting 1.23ms from Chicago, US
173.203.110.1 AS19994 Rackspace Hosting 1.35ms from Chicago, US
173.203.31.63 AS19994 Rackspace Hosting 1.21ms from Chicago, US
173.203.76.1 AS19994 Rackspace Hosting 1.31ms from Chicago, US
173.203.32.114 AS19994 Rackspace Hosting 1.14ms from Chicago, US
173.203.116.2 AS19994 Rackspace Hosting 1.34ms from Chicago, US
173.203.107.183 AS19994 Rackspace Hosting 1.18ms from Chicago, US
173.203.29.214 AS19994 Rackspace Hosting 1.22ms from Chicago, US
173.203.126.1 AS19994 Rackspace Hosting 1.36ms from Chicago, US
173.203.18.75 AS19994 Rackspace Hosting 1.37ms from Chicago, US
173.203.57.138 AS19994 Rackspace Hosting 1.24ms from Chicago, US
173.203.104.53 AS19994 Rackspace Hosting 1.21ms from Chicago, US

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address ASN Details
31.151.10.1 AS33915 Vodafone Libertel B.V. 5.18ms from Amsterdam, NL
207.68.47.1 AS701 Verizon Business 12.28ms from Ashburn, US
213.16.143.1 AS1241 Forthnet 1.57ms from Athens, GR
195.167.119.97 AS6799 Ote SA (Hellenic Telecommunications Organisation) 0.77ms from Athens, GR
167.198.238.65 AS2897 Georgia Technology Authority 15.16ms from Atlanta, US
12.234.0.177 AS7018 AT&T Enterprises, LLC 3.87ms from Atlanta, US
209.255.165.129 AS7029 Windstream Communications LLC 0.31ms from Atlanta, US
185.219.58.1 AS205241 VUNKERS IT EXPERTS S.L. 4.11ms from Barcelona, ES
101.19.32.1 AS4837 CHINA UNICOM China169 Backbone 8.64ms from Beijing, CN
186.85.76.1 AS10620 Telmex Colombia S.A. 1.21ms from Bogota, CO
216.66.110.1 AS17356 Vermont Telephone Company, Inc. 6.12ms from Boston, US
20.55.247.161 AS8075 Microsoft Corporation 0.84ms from Boydton, US
179.60.228.1 AS52493 VELONET 16.92ms from Buenos Aires, AR
204.191.167.1 AS852 TELUS Communications Inc. 1.24ms from Calgary, CA
110.185.212.1 AS4134 CHINANET-BACKBONE 3.48ms from Chengdu, CN
189.14.42.113 AS22689 SERCOMTEL S/A TELECOMUNICACOES 5.72ms from Curitiba, BR
179.154.31.49 AS28573 Claro NXT Telecomunicacoes Ltda 12.32ms from Curitiba, BR
191.216.110.1 AS8167 V tal 8.93ms from Curitiba, BR
188.120.44.1 AS208864 Weserve B.V. 0.26ms from Dronten, NL
91.75.118.129 AS15802 Emirates Integrated Telecommunications Company PJSC 3.29ms from Dubai, AE
200.39.129.65 AS270756 ILAILDO SILVA DO NASCIMENTO 13.95ms from Fortaleza, BR
217.163.132.161 AS3356 Level 3 Parent, LLC 0.41ms from Frankfurt am Main, DE
8.211.63.241 AS45102 Alibaba (US) Technology Co., Ltd. 0.77ms from Frankfurt am Main, DE
212.18.10.193 AS8767 M-net Telekommunikations GmbH 3.27ms from Frankfurt am Main, DE
120.238.229.81 AS9808 China Mobile Communications Group Co., Ltd. 4.61ms from Guangzhou, CN

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.

$
traceroute -a -n -q1 -f9 173.203.65.1
traceroute to 173.203.65.1 (173.203.65.1): 64 hops max, 52 byte packets
9 [AS3356] 4.2.118.110 1.873 ms
10 *
11 [AS19994] 50.56.6.163 1.972 ms
12 [AS19994] 50.56.6.131 1.906 ms
13 [AS19994] 173.203.65.1 6.316 ms
Measurement taken from IPinfo ProbeNet in Chicago, US
On

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

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