Whois & RDAP Lookup

38.181.81.169

IP Geolocation RDAP
IP Range38.181.80.0 - 38.181.87.255
HandleNET-38-181-80-0-1
NameSTACKS-CGNT-NET-1
TypeALLOCATION
HolderSTACKS INC
Registered2024-09-26 16:09 UTC
Updated2024-09-27 09:33 UTC
RegistrantSTACKS INC
Address1665 LOGAN ST, DENVER, CO, 80203, United States
Admin ContactLai Zhang
Address1665 LOGAN ST, DENVER, CO, 80203, United States
Tech Contactnoc noc
Phone+43423455
Addressasdadfdasfdas dsafdasf, dstar, , 12345, American Samoa
Abuse Contact[email protected]
Abuse Phone+43423455
Statusactive
Registry RDAPhttps://rdap.arin.net
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Raw RDAP JSON (registry) https://rdap.arin.net
{
  "arin_originas0_originautnums": [],
  "cidr0_cidrs": [
    {
      "length": 21,
      "v4prefix": "38.181.80.0"
    }
  ],
  "endAddress": "38.181.87.255",
  "entities": [
    {
      "entities": [
        {
          "events": [
            {
              "eventAction": "last changed",
              "eventDate": "2025-02-15T10:39:14-05:00"
            },
            {
              "eventAction": "registration",
              "eventDate": "2025-02-15T10:39:14-05:00"
            }
          ],
          "handle": "NOCNO72-ARIN",
          "links": [
            {
              "href": "https://rdap.arin.net/registry/entity/NOCNO72-ARIN",
              "rel": "self",
              "type": "application/rdap+json",
              "value": "https://rdap.arin.net/registry/ip/38.181.81.169"
            },
            {
              "href": "https://whois.arin.net/rest/poc/NOCNO72-ARIN",
              "rel": "alternate",
              "type": "application/xml",
              "value": "https://rdap.arin.net/registry/ip/38.181.81.169"
            }
          ],
          "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 2026-02-15"
              ],
              "title": "Unvalidated POC"
            }
          ],
          "roles": [
            "abuse",
            "technical",
            "noc",
            "dns",
            "routing"
          ],
          "vcardArray": [
            "vcard",
            [
              [
                "version",
                {},
                "text",
                "4.0"
              ],
              [
                "adr",
                {
                  "label": "asdadfdasfdas dsafdasf\ndstar\n\n12345\nAmerican Samoa"
                },
                "text",
                [
                  "",
                  "",
                  "",
                  "",
                  "",
                  "",
                  ""
                ]
              ],
              [
                "fn",
                {},
                "text",
                "noc noc"
              ],
              [
                "n",
                {},
                "text",
                [
                  "noc",
                  "noc",
                  "",
                  "",
                  ""
                ]
              ],
              [
                "kind",
                {},
                "text",
                "individual"
              ],
              [
                "email",
                {},
                "text",
                "[email protected]"
              ],
              [
                "tel",
                {
                  "type": [
                    "work",
                    "voice"
                  ]
                },
                "text",
                "+43423455"
              ]
            ]
          ]
        },
        {
          "events": [
            {
              "eventAction": "last changed",
              "eventDate": "2026-02-23T22:34:53-05:00"
            },
            {
              "eventAction": "registration",
              "eventDate": "2020-08-04T03:51:44-04:00"
            }
          ],
          "handle": "ZHANG335-ARIN",
          "links": [
            {
              "href": "https://rdap.arin.net/registry/entity/ZHANG335-ARIN",
              "rel": "self",
              "type": "application/rdap+json",
              "value": "https://rdap.arin.net/registry/ip/38.181.81.169"
            },
            {
              "href": "https://whois.arin.net/rest/poc/ZHANG335-ARIN",
              "rel": "alternate",
              "type": "application/xml",
              "value": "https://rdap.arin.net/registry/ip/38.181.81.169"
            }
          ],
          "objectClassName": "entity",
          "port43": "whois.arin.net",
          "remarks": [
            {
              "description": [
                "https://www.stacksinc.net"
              ],
              "title": "Registration Comments"
            }
          ],
          "roles": [
            "administrative"
          ],
          "status": [
            "validated"
          ],
          "vcardArray": [
            "vcard",
            [
              [
                "version",
                {},
                "text",
                "4.0"
              ],
              [
                "adr",
                {
                  "label": "1665 LOGAN ST\nDENVER\nCO\n80203\nUnited States"
                },
                "text",
                [
                  "",
                  "",
                  "",
                  "",
                  "",
                  "",
                  ""
                ]
              ],
              [
                "fn",
                {},
                "text",
                "Lai Zhang"
              ],
              [
                "n",
                {},
                "text",
                [
                  "Zhang",
                  "Lai",
                  "",
                  "",
                  ""
                ]
              ],
              [
                "kind",
                {},
                "text",
                "individual"
              ],
              [
                "email",
                {},
                "text",
                "[email protected]"
              ],
              [
                "email",
                {},
                "text",
                "[email protected]"
              ],
              [
                "tel",
                {
                  "type": [
                    "work",
                    "voice"
                  ]
                },
                "text",
                "+1-626-890-5790"
              ]
            ]
          ]
        },
        {
          "events": [
            {
              "eventAction": "last changed",
              "eventDate": "2026-02-23T21:19:09-05:00"
            },
            {
              "eventAction": "registration",
              "eventDate": "2025-02-17T02:33:08-05:00"
            }
          ],
          "handle": "CHONG52-ARIN",
          "links": [
            {
              "href": "https://rdap.arin.net/registry/entity/CHONG52-ARIN",
              "rel": "self",
              "type": "application/rdap+json",
              "value": "https://rdap.arin.net/registry/ip/38.181.81.169"
            },
            {
              "href": "https://whois.arin.net/rest/poc/CHONG52-ARIN",
              "rel": "alternate",
              "type": "application/xml",
              "value": "https://rdap.arin.net/registry/ip/38.181.81.169"
            }
          ],
          "objectClassName": "entity",
          "port43": "whois.arin.net",
          "roles": [
            "dns",
            "noc",
            "routing",
            "technical",
            "abuse"
          ],
          "status": [
            "validated"
          ],
          "vcardArray": [
            "vcard",
            [
              [
                "version",
                {},
                "text",
                "4.0"
              ],
              [
                "adr",
                {
                  "label": "adfg3211\nDENVER\nCO\n80203\nUnited States"
                },
                "text",
                [
                  "",
                  "",
                  "",
                  "",
                  "",
                  "",
                  ""
                ]
              ],
              [
                "fn",
                {},
                "text",
                "joey chong"
              ],
              [
                "n",
                {},
                "text",
                [
                  "chong",
                  "joey",
                  "",
                  "",
                  ""
                ]
              ],
              [
                "kind",
                {},
                "text",
                "individual"
              ],
              [
                "email",
                {},
                "text",
                "[email protected]"
              ],
              [
                "tel",
                {
                  "type": [
                    "work",
                    "voice"
                  ]
                },
                "text",
                "+1-626-890-5790"
              ]
            ]
          ]
        }
      ],
      "events": [
        {
          "eventAction": "last changed",
          "eventDate": "2026-02-23T22:38:01-05:00"
        },
        {
          "eventAction": "registration",
          "eventDate": "2020-08-05T11:01:36-04:00"
        }
      ],
      "handle": "STACK-10",
      "links": [
        {
          "href": "https://rdap.arin.net/registry/entity/STACK-10",
          "rel": "self",
          "type": "application/rdap+json",
          "value": "https://rdap.arin.net/registry/ip/38.181.81.169"
        },
        {
          "href": "https://whois.arin.net/rest/org/STACK-10",
          "rel": "alternate",
          "type": "application/xml",
          "value": "https://rdap.arin.net/registry/ip/38.181.81.169"
        }
      ],
      "objectClassName": "entity",
      "port43": "whois.arin.net",
      "remarks": [
        {
          "description": [
            "GeoFeed https://www.stacksinc.net/geofeed.csv"
          ],
          "title": "Registration Comments"
        }
      ],
      "roles": [
        "registrant"
      ],
      "vcardArray": [
        "vcard",
        [
          [
            "version",
            {},
            "text",
            "4.0"
          ],
          [
            "fn",
            {},
            "text",
            "STACKS INC"
          ],
          [
            "adr",
            {
              "label": "1665 LOGAN ST\nDENVER\nCO\n80203\nUnited States"
            },
            "text",
            [
              "",
              "",
              "",
              "",
              "",
              "",
              ""
            ]
          ],
          [
            "kind",
            {},
            "text",
            "org"
          ]
        ]
      ]
    }
  ],
  "events": [
    {
      "eventAction": "last changed",
      "eventDate": "2024-09-27T05:33:10-04:00"
    },
    {
      "eventAction": "registration",
      "eventDate": "2024-09-26T12:09:48-04:00"
    }
  ],
  "handle": "NET-38-181-80-0-1",
  "ipVersion": "v4",
  "links": [
    {
      "href": "https://rdap.arin.net/registry/ip/38.181.80.0",
      "rel": "self",
      "type": "application/rdap+json",
      "value": "https://rdap.arin.net/registry/ip/38.181.81.169"
    },
    {
      "href": "https://whois.arin.net/rest/net/NET-38-181-80-0-1",
      "rel": "alternate",
      "type": "application/xml",
      "value": "https://rdap.arin.net/registry/ip/38.181.81.169"
    },
    {
      "href": "https://rdap.arin.net/registry/ip/38.0.0.0/8",
      "rel": "up",
      "type": "application/rdap+json",
      "value": "https://rdap.arin.net/registry/ip/38.181.81.169"
    }
  ],
  "name": "STACKS-CGNT-NET-1",
  "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/ip/38.181.81.169"
        }
      ],
      "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/ip/38.181.81.169"
        }
      ],
      "title": "Whois Inaccuracy Reporting"
    },
    {
      "description": [
        "Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
      ],
      "title": "Copyright Notice"
    }
  ],
  "objectClassName": "ip network",
  "parentHandle": "NET-38-0-0-0-1",
  "port43": "whois.arin.net",
  "rdapConformance": [
    "nro_rdap_profile_0",
    "rdap_level_0",
    "cidr0",
    "arin_originas0"
  ],
  "remarks": [
    {
      "description": [
        "GeoFeed https://www.stacksinc.net/geofeed.csv"
      ],
      "title": "Registration Comments"
    }
  ],
  "startAddress": "38.181.80.0",
  "status": [
    "active"
  ],
  "type": "ALLOCATION"
}

Frequently asked questions

What is WHOIS?

WHOIS is a public directory that answers "who is responsible for this?" for domains, IP ranges and ASNs. It lists registration dates, the registrar, nameservers and contacts.

What is RDAP, and how does it differ?

RDAP is the modern replacement for WHOIS. It returns the same records in a structured, consistent format. We query RDAP first and fall back to classic WHOIS text when a registry has not adopted it yet.

What is the difference between a registrar and a registrant?

The registrar is the company you register and manage a domain through, such as xTom or GoDaddy. The registrant is the person or organization that actually holds the domain.

What are nameservers?

Nameservers answer DNS questions for a domain and decide which IP addresses the name resolves to. They also show which DNS provider the domain uses.

What is DNSSEC?

DNSSEC adds cryptographic signatures to DNS answers so they cannot be quietly altered in transit. "Signed" means the domain has it enabled, "unsigned" means it does not.

Why is the contact information redacted?

Privacy laws such as GDPR require registrars to hide most personal details in public records. The abuse contact is usually still shown, so a domain or network can be reported when something goes wrong.