173.203.255.255
- No reverse DNS
- On 1 blocklist
- Network
- RACKS-8-2013030600000007
- Held by
- Rackspace Cloud Servers
- Range
- 173.203.240.0 - 173.203.255.255
- CIDR
- 173.203.240.0/20
- Type
- ASSIGNMENT
- Registered on
- Last updated
- Status
- active
Reverse DNS
- Names
- None
Network
- Announced by
- AS33070 Rackspace Hosting
- Route
- 173.203.192.0/18, carried by 2,560 of bgp.tools' BGP feeds
- Kind
- Content
- Country
- US
- Tagged
- VPN Host, Server Hosting, Tranco 10k Host
Routes AS33070 announces
105 IPv4 prefixes covering 803,840 addresses, and 1 IPv6 prefix
IPv4
- 67.192.0.0/16
- 72.32.0.0/16
- 72.232.0.0/16
- 148.62.0.0/16
- 174.143.0.0/16
- 72.3.128.0/17
- 72.233.0.0/17
- 98.129.0.0/17
- 23.253.64.0/18
- 50.56.192.0/18
- 74.205.64.0/18
- 98.129.128.0/18
- 166.78.0.0/18
- 166.78.128.0/18
- 173.203.192.0/18
- 23.253.224.0/19
- 50.56.160.0/19
- 64.39.0.0/19
- 64.49.192.0/19
- 66.216.64.0/19
- 67.23.0.0/19
- 74.205.32.0/19
- 98.129.192.0/19
- 104.130.128.0/19
- 104.239.128.0/19
- 162.242.128.0/19
- 172.99.96.0/19
- 192.237.192.0/19
- 198.61.192.0/19
- 198.101.192.0/19
- 204.232.192.0/19
- 209.61.128.0/19
- 50.56.128.0/20
- 64.49.240.0/20
- 65.61.160.0/20
- 66.216.96.0/20
- 67.23.32.0/20
- 98.129.240.0/20
- 104.130.240.0/20
- 108.166.64.0/20
- 108.166.80.0/20
- 108.171.176.0/20
- 162.209.64.0/20
- 198.101.224.0/20
- 209.61.176.0/20
- 209.114.32.0/20
- 209.114.48.0/20
- 216.110.32.0/20
- 50.56.152.0/21
- 64.49.224.0/21
And 55 more
IPv6
- 2001:4800::/32
From bgp.tools
Location
- Location
- United States
- Accuracy
- Within 1,000 km
Location from GeoLite2 data created by MaxMind
Blocklists
- Spamhaus ZEN Listed: End-user range that should not send mail directly (PBL)
- SpamCop Not listed
- Mailspike Not listed
- PSBL Not listed
WHOIS
# # 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. # # start NetRange: 173.203.0.0 - 173.203.255.255 CIDR: 173.203.0.0/16 NetName: RSCP-NET-4 NetHandle: NET-173-203-0-0-1 Parent: NET173 (NET-173-0-0-0-0) NetType: Direct Allocation OriginAS: Organization: Rackspace Hosting (RACKS-8) RegDate: 2009-10-02 Updated: 2012-02-24 Ref: https://rdap.arin.net/registry/ip/173.203.0.0 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: 2026-06-10 Ref: https://rdap.arin.net/registry/entity/RACKS-8 OrgTechHandle: ZR9-ARIN OrgTechName: Rackspace, com OrgTechPhone: +1-210-312-4000 OrgTechEmail: hostmaster@rackspace.com OrgTechRef: https://rdap.arin.net/registry/entity/ZR9-ARIN OrgNOCHandle: HANSE157-ARIN OrgNOCName: Hansell, Chris OrgNOCPhone: +1-210-312-4000 OrgNOCEmail: hostmaster@rackspace.com OrgNOCRef: https://rdap.arin.net/registry/entity/HANSE157-ARIN OrgTechHandle: IPADM17-ARIN OrgTechName: IPADMIN OrgTechPhone: +1-210-312-4000 OrgTechEmail: hostmaster@rackspace.com OrgTechRef: https://rdap.arin.net/registry/entity/IPADM17-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 # end # start NetRange: 173.203.240.0 - 173.203.255.255 CIDR: 173.203.240.0/20 NetName: RACKS-8-2013030600000007 NetHandle: NET-173-203-240-0-1 Parent: RSCP-NET-4 (NET-173-203-0-0-1) NetType: Reassigned OriginAS: Customer: Rackspace Cloud Servers (C03337005) RegDate: 2013-03-07 Updated: 2013-03-07 Ref: https://rdap.arin.net/registry/ip/173.203.240.0 CustName: Rackspace Cloud Servers Address: 5000 Walzem Rd. City: San Antonio StateProv: TX PostalCode: 78218 Country: US RegDate: 2013-03-07 Updated: 2013-03-07 Ref: https://rdap.arin.net/registry/entity/C03337005 OrgTechHandle: ZR9-ARIN OrgTechName: Rackspace, com OrgTechPhone: +1-210-312-4000 OrgTechEmail: hostmaster@rackspace.com OrgTechRef: https://rdap.arin.net/registry/entity/ZR9-ARIN OrgNOCHandle: HANSE157-ARIN OrgNOCName: Hansell, Chris OrgNOCPhone: +1-210-312-4000 OrgNOCEmail: hostmaster@rackspace.com OrgNOCRef: https://rdap.arin.net/registry/entity/HANSE157-ARIN OrgTechHandle: IPADM17-ARIN OrgTechName: IPADMIN OrgTechPhone: +1-210-312-4000 OrgTechEmail: hostmaster@rackspace.com OrgTechRef: https://rdap.arin.net/registry/entity/IPADM17-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 # end # # 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. #