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AS19994

Rackspace Hosting

ARIN US active Announced
More ASNs in the United States →
Organization
Rackspace Hosting
RACKSPACE
Registered
Jan 15, 2010
16 years ago
IPv4 Prefixes
66
537,344 addresses
IPv6 Prefixes
1
65,536 × /48
BGP Neighbours
2
1 upstream/peer · 1 downstream

Registration

AS Number AS19994 AS Name RACKSPACE Organization Rackspace Hosting Organization ID RACKS-8 Address 1718 Dry Creek Way, Ste 115, San Antonio, TX, 78259-1837, United States Country United States (US) Registry ARIN Allocated Jan 15, 2010 Record Created Jan 15, 2010 Last Updated Feb 24, 2012 Status
active
WHOIS Server whois.arin.net AS Description RACKSPACE - Rackspace Hosting, US Abuse Email [email protected] Abuse Phone +1-210-312-4000

IPv4 Prefixes

66 prefixes · 537,344 addresses Routing data as of 2026-10-05 00:00 UTC

23.0.0.0/8 · 3 prefixes · 32,768 addresses
PrefixRangeAddresses
23.253.0.0/1823.253.0.0 – 23.253.63.25516,384
23.253.160.0/1923.253.160.0 – 23.253.191.2558,192
23.253.192.0/1923.253.192.0 – 23.253.223.2558,192
50.0.0.0/8 · 5 prefixes · 94,208 addresses
PrefixRangeAddresses
50.56.0.0/1750.56.0.0 – 50.56.127.25532,768
50.57.0.0/1750.57.0.0 – 50.57.127.25532,768
50.57.128.0/1850.57.128.0 – 50.57.191.25516,384
50.57.192.0/1950.57.192.0 – 50.57.223.2558,192
50.57.224.0/2050.57.224.0 – 50.57.239.2554,096
64.0.0.0/8 · 1 prefix · 512 addresses
PrefixRangeAddresses
64.49.232.0/2364.49.232.0 – 64.49.233.255512
65.0.0.0/8 · 1 prefix · 256 addresses
PrefixRangeAddresses
65.61.188.0/2465.61.188.0 – 65.61.188.255256
66.0.0.0/8 · 1 prefix · 512 addresses
PrefixRangeAddresses
66.216.116.0/2366.216.116.0 – 66.216.117.255512
67.0.0.0/8 · 1 prefix · 8,192 addresses
PrefixRangeAddresses
67.207.128.0/1967.207.128.0 – 67.207.159.2558,192
69.0.0.0/8 · 1 prefix · 4,096 addresses
PrefixRangeAddresses
69.170.128.0/2069.170.128.0 – 69.170.143.2554,096
74.0.0.0/8 · 2 prefixes · 17,408 addresses
PrefixRangeAddresses
74.120.216.0/2274.120.216.0 – 74.120.219.2551,024
74.200.192.0/1874.200.192.0 – 74.200.255.25516,384
104.0.0.0/8 · 6 prefixes · 30,720 addresses
PrefixRangeAddresses
104.130.64.0/20104.130.64.0 – 104.130.79.2554,096
104.130.80.0/20104.130.80.0 – 104.130.95.2554,096
104.130.96.0/20104.130.96.0 – 104.130.111.2554,096
104.130.112.0/21104.130.112.0 – 104.130.119.2552,048
104.130.192.0/19104.130.192.0 – 104.130.223.2558,192
104.239.192.0/19104.239.192.0 – 104.239.223.2558,192
108.0.0.0/8 · 3 prefixes · 28,672 addresses
PrefixRangeAddresses
108.166.0.0/18108.166.0.0 – 108.166.63.25516,384
108.166.96.0/19108.166.96.0 – 108.166.127.2558,192
108.171.160.0/20108.171.160.0 – 108.171.175.2554,096
134.0.0.0/8 · 1 prefix · 256 addresses
PrefixRangeAddresses
134.8.2.0/24134.8.2.0 – 134.8.2.255256
146.0.0.0/8 · 3 prefixes · 3,072 addresses
PrefixRangeAddresses
146.88.100.0/22146.88.100.0 – 146.88.103.2551,024
146.88.112.0/22146.88.112.0 – 146.88.115.2551,024
146.88.120.0/22146.88.120.0 – 146.88.123.2551,024
147.0.0.0/8 · 2 prefixes · 2,048 addresses
PrefixRangeAddresses
147.75.8.0/22147.75.8.0 – 147.75.11.2551,024
147.75.12.0/22147.75.12.0 – 147.75.15.2551,024
161.0.0.0/8 · 3 prefixes · 65,536 addresses
PrefixRangeAddresses
161.47.0.0/18161.47.0.0 – 161.47.63.25516,384
161.47.64.0/18161.47.64.0 – 161.47.127.25516,384
161.47.128.0/17161.47.128.0 – 161.47.255.25532,768
162.0.0.0/8 · 4 prefixes · 29,696 addresses
PrefixRangeAddresses
162.209.0.0/18162.209.0.0 – 162.209.63.25516,384
162.209.80.0/20162.209.80.0 – 162.209.95.2554,096
162.216.40.0/22162.216.40.0 – 162.216.43.2551,024
162.242.160.0/19162.242.160.0 – 162.242.191.2558,192
166.0.0.0/8 · 2 prefixes · 32,768 addresses
PrefixRangeAddresses
166.78.64.0/18166.78.64.0 – 166.78.127.25516,384
166.78.192.0/18166.78.192.0 – 166.78.255.25516,384
173.0.0.0/8 · 3 prefixes · 38,912 addresses
PrefixRangeAddresses
173.45.224.0/20173.45.224.0 – 173.45.239.2554,096
173.45.240.0/21173.45.240.0 – 173.45.247.2552,048
173.203.0.0/17173.203.0.0 – 173.203.127.25532,768
184.0.0.0/8 · 8 prefixes · 65,280 addresses
PrefixRangeAddresses
184.106.0.0/19184.106.0.0 – 184.106.31.2558,192
184.106.32.0/20184.106.32.0 – 184.106.47.2554,096
184.106.48.0/22184.106.48.0 – 184.106.51.2551,024
184.106.52.0/23184.106.52.0 – 184.106.53.255512
184.106.54.0/24184.106.54.0 – 184.106.54.255256
184.106.56.0/21184.106.56.0 – 184.106.63.2552,048
184.106.64.0/18184.106.64.0 – 184.106.127.25516,384
184.106.128.0/17184.106.128.0 – 184.106.255.25532,768
192.0.0.0/8 · 2 prefixes · 24,576 addresses
PrefixRangeAddresses
192.237.128.0/18192.237.128.0 – 192.237.191.25516,384
192.237.224.0/19192.237.224.0 – 192.237.255.2558,192
198.0.0.0/8 · 4 prefixes · 43,008 addresses
PrefixRangeAddresses
198.61.128.0/18198.61.128.0 – 198.61.191.25516,384
198.61.224.0/19198.61.224.0 – 198.61.255.2558,192
198.101.128.0/18198.101.128.0 – 198.101.191.25516,384
198.254.72.0/21198.254.72.0 – 198.254.79.2552,048
199.0.0.0/8 · 3 prefixes · 1,536 addresses
PrefixRangeAddresses
199.180.184.0/22199.180.184.0 – 199.180.187.2551,024
199.253.200.0/24199.253.200.0 – 199.253.200.255256
199.253.201.0/24199.253.201.0 – 199.253.201.255256
204.0.0.0/8 · 3 prefixes · 1,536 addresses
PrefixRangeAddresses
204.9.188.0/24204.9.188.0 – 204.9.188.255256
204.13.108.0/22204.13.108.0 – 204.13.111.2551,024
204.51.170.0/24204.51.170.0 – 204.51.170.255256
208.0.0.0/8 · 1 prefix · 2,048 addresses
PrefixRangeAddresses
208.78.96.0/21208.78.96.0 – 208.78.103.2552,048
209.0.0.0/8 · 2 prefixes · 8,704 addresses
PrefixRangeAddresses
209.20.64.0/19209.20.64.0 – 209.20.95.2558,192
209.61.166.0/23209.61.166.0 – 209.61.167.255512
216.0.0.0/8 · 1 prefix · 1,024 addresses
PrefixRangeAddresses
216.18.148.0/22216.18.148.0 – 216.18.151.2551,024

IPv6 Prefixes

1 prefix · 65,536 × /48 Routing data as of 2026-10-05 00:00 UTC

PrefixAddresses
2001:4801::/32296

BGP Neighbours

2 unique neighbours · 1 upstream/peer · 1 downstream. A neighbour can be seen on more than one side. Rows are ordered by AS paths: the number of BGP paths seen by RIPE RIS that contain the adjacency. Sightings count each IPv4/IPv6 route with the adjacency once per RIS peer that sees it (routes × peers), so they show how widely it is seen, not how many distinct routes it carries.

Upstream & peer side (1)

Networks seen to the left of this AS in BGP paths, toward the route collectors — typically its transit providers (upstreams) and peers.

ASNameAS pathsIPv4 sightingsIPv6 sightings
AS12200RACKSPACE - Rackspace Hosting76923,766331

Downstream side (1)

Networks seen to the right of this AS in BGP paths — networks whose routes it carries, typically its customers (downstreams).

ASNameAS pathsIPv4 sightingsIPv6 sightings
AS396479MAILGUN-US - Mailgun Technologies Inc.1932,0730

Raw RDAP Response

{
  "endAutnum": 19994,
  "entities": [
    {
      "entities": [
        {
          "events": [
            {
              "eventAction": "last changed",
              "eventDate": "2022-10-31T16:40:33-04:00"
            },
            {
              "eventAction": "registration",
              "eventDate": "2000-02-08T16:10:38-05:00"
            }
          ],
          "handle": "ZR9-ARIN",
          "links": [
            {
              "href": "https://rdap.arin.net/registry/entity/ZR9-ARIN",
              "rel": "self",
              "type": "application/rdap+json",
              "value": "https://rdap.arin.net/registry/autnum/19994"
            },
            {
              "href": "https://whois.arin.net/rest/poc/ZR9-ARIN",
              "rel": "alternate",
              "type": "application/xml",
              "value": "https://rdap.arin.net/registry/autnum/19994"
            }
          ],
          "objectClassName": "entity",
          "port43": "whois.arin.net",
          "remarks": [
            {
              "description": [
                "ARIN has attempted to validate the data for this POC, but has received no response from the POC since 2023-10-31"
              ],
              "title": "Unvalidated POC"
            }
          ],
          "roles": [
            "technical"
          ],
          "vcardArray": [
            "vcard",
            [
              [
                "version",
                {},
                "text",
                "4.0"
              ],
              [
                "fn",
                {},
                "text",
                "REDACTED"
              ],
              [
                "kind",
                {},
                "text",
                "individual"
              ]
            ]
          ]
        },
        {
          "events": [
            {
              "eventAction": "last changed",
              "eventDate": "2026-07-07T12:08:42-04:00"
            },
            {
              "eventAction": "registration",
              "eventDate": "2002-09-16T13:50:19-04:00"
            }
          ],
          "handle": "IPADM17-ARIN",
          "links": [
            {
              "href": "https://rdap.arin.net/registry/entity/IPADM17-ARIN",
              "rel": "self",
              "type": "application/rdap+json",
              "value": "https://rdap.arin.net/registry/autnum/19994"
            },
            {
              "href": "https://whois.arin.net/rest/poc/IPADM17-ARIN",
              "rel": "alternate",
              "type": "application/xml",
              "value": "https://rdap.arin.net/registry/autnum/19994"
            }
          ],
          "objectClassName": "entity",
          "port43": "whois.arin.net",
          "roles": [
            "technical",
            "administrative"
          ],
          "status": [
            "validated"
          ],
          "vcardArray": [
            "vcard",
            [
              [
                "version",
                {},
                "text",
                "4.0"
              ],
              [
                "adr",
                {
                  "label": "1718 Dry Creek Way \nSte 115\nSan Antonio\nTX\n78259-1837\nUnited States"
                },
                "text",
                [
                  "",
                  "",
                  "",
                  "",
                  "",
                  "",
                  ""
                ]
              ],
              [
                "fn",
                {},
                "text",
                "IPADMIN"
              ],
              [
                "org",
                {},
                "text",
                "Rackspace Managed Hosting"
              ],
              [
                "kind",
                {},
                "text",
                "group"
              ],
              [
                "email",
                {},
                "text",
                "[email protected]"
              ],
              [
                "tel",
                {
                  "type": [
                    "work",
                    "voice"
                  ]
                },
                "text",
                "+1-210-312-4000"
              ]
            ]
          ]
        },
        {
          "events": [
            {
              "eventAction": "last changed",
              "eventDate": "2026-06-10T10:46:32-04:00"
            },
            {
              "eventAction": "registration",
              "eventDate": "2015-09-11T14:42:42-04:00"
            }
          ],
          "handle": "HANSE157-ARIN",
          "links": [
            {
              "href": "https://rdap.arin.net/registry/entity/HANSE157-ARIN",
              "rel": "self",
              "type": "application/rdap+json",
              "value": "https://rdap.arin.net/registry/autnum/19994"
            },
            {
              "href": "https://whois.arin.net/rest/poc/HANSE157-ARIN",
              "rel": "alternate",
              "type": "application/xml",
              "value": "https://rdap.arin.net/registry/autnum/19994"
            }
          ],
          "objectClassName": "entity",
          "port43": "whois.arin.net",
          "roles": [
            "noc",
            "technical"
          ],
          "status": [
            "validated"
          ],
          "vcardArray": [
            "vcard",
            [
              [
                "version",
                {},
                "text",
                "4.0"
              ],
              [
                "fn",
                {},
                "text",
                "REDACTED"
              ],
              [
                "kind",
                {},
                "text",
                "individual"
              ]
            ]
          ]
        },
        {
          "events": [
            {
              "eventAction": "last changed",
              "eventDate": "2025-09-29T12:47:57-04:00"
            },
            {
              "eventAction": "registration",
              "eventDate": "2002-09-25T15:10:56-04:00"
            }
          ],
          "handle": "ABUSE45-ARIN",
          "links": [
            {
              "href": "https://rdap.arin.net/registry/entity/ABUSE45-ARIN",
              "rel": "self",
              "type": "application/rdap+json",
              "value": "https://rdap.arin.net/registry/autnum/19994"
            },
            {
              "href": "https://whois.arin.net/rest/poc/ABUSE45-ARIN",
              "rel": "alternate",
              "type": "application/xml",
              "value": "https://rdap.arin.net/registry/autnum/19994"
            }
          ],
          "objectClassName": "entity",
          "port43": "whois.arin.net",
          "roles": [
            "abuse"
          ],
          "status": [
            "validated"
          ],
          "vcardArray": [
            "vcard",
            [
              [
                "version",
                {},
                "text",
                "4.0"
              ],
              [
                "adr",
                {
                  "label": "5000 Walzem Rd\nSan Antonio\nTX\n78218\nUnited States"
                },
                "text",
                [
                  "",
                  "",
                  "",
                  "",
                  "",
                  "",
                  ""
                ]
              ],
              [
                "fn",
                {},
                "text",
                "Abuse Desk"
              ],
              [
                "org",
                {},
                "text",
                "Rackspace"
              ],
              [
                "kind",
                {},
                "text",
                "group"
              ],
              [
                "email",
                {},
                "text",
                "[email protected]"
              ],
              [
                "tel",
                {
                  "type": [
                    "work",
                    "voice"
                  ]
                },
                "text",
                "+1-210-312-4000"
              ]
            ]
          ]
        }
      ],
      "events": [
        {
          "eventAction": "last changed",
          "eventDate": "2026-06-10T11:36:47-04:00"
        },
        {
          "eventAction": "registration",
          "eventDate": "2010-03-29T13:32:31-04:00"
        }
      ],
      "handle": "RACKS-8",
      "links": [
        {
          "href": "https://rdap.arin.net/registry/entity/RACKS-8",
          "rel": "self",
          "type": "application/rdap+json",
          "value": "https://rdap.arin.net/registry/autnum/19994"
        },
        {
          "href": "https://whois.arin.net/rest/org/RACKS-8",
          "rel": "alternate",
          "type": "application/xml",
          "value": "https://rdap.arin.net/registry/autnum/19994"
        }
      ],
      "objectClassName": "entity",
      "port43": "whois.arin.net",
      "roles": [
        "registrant"
      ],
      "vcardArray": [
        "vcard",
        [
          [
            "version",
            {},
            "text",
            "4.0"
          ],
          [
            "fn",
            {},
            "text",
            "Rackspace Hosting"
          ],
          [
            "adr",
            {
              "label": "1718 Dry Creek Way\nSte 115\nSan Antonio\nTX\n78259-1837\nUnited States"
            },
            "text",
            [
              "",
              "",
              "",
              "",
              "",
              "",
              ""
            ]
          ],
          [
            "kind",
            {},
            "text",
            "org"
          ]
        ]
      ]
    }
  ],
  "events": [
    {
      "eventAction": "last changed",
      "eventDate": "2012-02-24T09:44:34-05:00"
    },
    {
      "eventAction": "registration",
      "eventDate": "2010-01-15T11:07:42-05:00"
    }
  ],
  "handle": "AS19994",
  "links": [
    {
      "href": "https://rdap.arin.net/registry/autnum/19994",
      "rel": "self",
      "type": "application/rdap+json",
      "value": "https://rdap.arin.net/registry/autnum/19994"
    },
    {
      "href": "https://whois.arin.net/rest/asn/AS19994",
      "rel": "alternate",
      "type": "application/xml",
      "value": "https://rdap.arin.net/registry/autnum/19994"
    }
  ],
  "name": "RACKSPACE",
  "notices": [
    {
      "description": [
        "By using the ARIN RDAP/Whois service, you are agreeing to the RDAP/Whois Terms of Use"
      ],
      "links": [
        {
          "href": "https://www.arin.net/resources/registry/whois/tou/",
          "rel": "terms-of-service",
          "type": "text/html",
          "value": "https://rdap.arin.net/registry/autnum/19994"
        }
      ],
      "title": "Terms of Service"
    },
    {
      "description": [
        "If you see inaccuracies in the results, please visit: "
      ],
      "links": [
        {
          "href": "https://www.arin.net/resources/registry/whois/inaccuracy_reporting/",
          "rel": "inaccuracy-report",
          "type": "text/html",
          "value": "https://rdap.arin.net/registry/autnum/19994"
        }
      ],
      "title": "Whois Inaccuracy Reporting"
    },
    {
      "description": [
        "Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
      ],
      "title": "Copyright Notice"
    }
  ],
  "objectClassName": "autnum",
  "port43": "whois.arin.net",
  "rdapConformance": [
    "nro_rdap_profile_0",
    "rdap_level_0",
    "nro_rdap_profile_asn_flat_0"
  ],
  "startAutnum": 19994,
  "status": [
    "active"
  ]
}

Contact details of private individuals are redacted.