Whois & RDAP Lookup

% IP Client: 146.19.19.88
 
% Joint Whois - whois.lacnic.net
%  This server accepts single ASN, IPv4 or IPv6 queries

% LACNIC resource: whois.lacnic.net


% Copyright LACNIC lacnic.net
%  The data below is provided for information purposes
%  and to assist persons in obtaining information about or
%  related to AS and IP numbers registrations
%  By submitting a whois query, you agree to use this data
%  only for lawful purposes.
%  2026-08-07 01:14:36 (-03 -03:00)

aut-num:     AS27823
owner:       Dattatec.com
ownerid:     AR-DATT-LACNIC
responsible: Guillermo Tornatore
address:     Cordoba, 3753, 
address:     2000 - Rosario - SF
country:     AR
phone:       +54 341 4360555
owner-c:     GUT
routing-c:   GUT
abuse-c:     GUT
created:     20060512
changed:     20060512

nic-hdl:     GUT
person:      Hostmar ISP
e-mail:      [email protected]
address:     Cordoba, 3753, 
address:     2000 - Rosario - SF
country:     AR
phone:       +54 341 4360555
created:     20040506
changed:     20220311

% whois.lacnic.net accepts only direct match queries.
% Types of queries are: POCs, ownerid, CIDR blocks, IP
% and AS numbers.

% Query time: 833 msec
% WHEN: Fri Aug 07 04:14:36 UTC 2026

Raw RDAP JSON (registry) https://rdap.lacnic.net

{
  "endAutnum": 27823,
  "entities": [
    {
      "events": [
        {
          "eventAction": "registration",
          "eventDate": "2004-06-24T12:00:00Z"
        },
        {
          "eventAction": "last changed",
          "eventDate": "2024-09-02T23:01:07Z"
        }
      ],
      "handle": "AR-DATT-LACNIC",
      "links": [
        {
          "href": "https://rdap.lacnic.net/rdap/entity/AR-DATT-LACNIC",
          "rel": "self",
          "type": "application/rdap+json",
          "value": "https://rdap.lacnic.net/rdap/entity/AR-DATT-LACNIC"
        }
      ],
      "objectClassName": "entity",
      "roles": [
        "registrant"
      ],
      "vcardArray": [
        "vcard",
        [
          [
            "version",
            {},
            "text",
            "4.0"
          ],
          [
            "fn",
            {},
            "text",
            "Dattatec.com"
          ],
          [
            "kind",
            {},
            "text",
            "org"
          ],
          [
            "adr",
            {
              "label": "Cordoba\nRosario\n2000\nAR"
            },
            "text",
            [
              "",
              "",
              "Cordoba",
              "Rosario",
              "",
              "2000",
              "AR"
            ]
          ],
          [
            "tel",
            {
              "type": "voice"
            },
            "text",
            "+54 341 4360555"
          ]
        ]
      ]
    },
    {
      "events": [
        {
          "eventAction": "registration",
          "eventDate": "2004-05-06T12:00:00Z"
        },
        {
          "eventAction": "last changed",
          "eventDate": "2022-03-11T11:34:57Z"
        }
      ],
      "handle": "GUT",
      "links": [
        {
          "href": "https://rdap.lacnic.net/rdap/entity/GUT",
          "rel": "self",
          "type": "application/rdap+json",
          "value": "https://rdap.lacnic.net/rdap/entity/GUT"
        }
      ],
      "objectClassName": "entity",
      "roles": [
        "administrative",
        "technical",
        "abuse"
      ],
      "vcardArray": [
        "vcard",
        [
          [
            "version",
            {},
            "text",
            "4.0"
          ],
          [
            "fn",
            {},
            "text",
            "Hostmar ISP"
          ],
          [
            "kind",
            {},
            "text",
            "individual"
          ],
          [
            "adr",
            {
              "label": "Cordoba\nRosario\n2000\nAR"
            },
            "text",
            [
              "",
              "",
              "Cordoba",
              "Rosario",
              "",
              "2000",
              "AR"
            ]
          ],
          [
            "tel",
            {
              "type": "voice"
            },
            "text",
            "+54 341 4360555"
          ],
          [
            "email",
            {},
            "text",
            "[email protected]"
          ],
          [
            "lang",
            {},
            "language-tag",
            "es"
          ]
        ]
      ]
    }
  ],
  "events": [
    {
      "eventAction": "registration",
      "eventDate": "2006-05-12T12:00:00Z"
    },
    {
      "eventAction": "last changed",
      "eventDate": "2006-05-12T12:00:00Z"
    }
  ],
  "handle": "AS27823",
  "lacnic_legalRepresentative": "Guillermo Tornatore",
  "links": [
    {
      "href": "https://rdap.lacnic.net/rdap/autnum/AS27823",
      "rel": "self",
      "type": "application/rdap+json",
      "value": "https://rdap.lacnic.net/rdap/autnum/AS27823"
    }
  ],
  "name": "27823",
  "notices": [
    {
      "description": [
        "This is the LACNIC RDAP service. Objects are in RDAP format."
      ],
      "links": [
        {
          "href": "https://www.lacnic.net/registration-data-access-protocol",
          "rel": "terms-of-service",
          "type": "text/html",
          "value": "https://www.lacnic.net/registration-data-access-protocol"
        }
      ],
      "title": "Terms and Conditions"
    }
  ],
  "objectClassName": "autnum",
  "port43": "whois.lacnic.net",
  "rdapConformance": [
    "rdap_level_0",
    "cidr0",
    "lacnic_level_0"
  ],
  "remarks": [
    {
      "description": [
        "Autonomous System AS27823 from AR-DATT-LACNIC"
      ],
      "title": "description"
    }
  ],
  "startAutnum": 27823,
  "status": [
    "active"
  ],
  "type": "DIRECT 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.