Whois & RDAP Lookup

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31.30.0.0/16

RDAP
IP Range31.30.0.0 - 31.30.255.255
Handle31.30.0.0 - 31.30.255.255
NameCZ-OSKARMOBIL-20110315
TypeALLOCATED PA
CountryCZ
HolderVodafone Czech Republic a.s.
Registered2011-03-15 16:10 UTC
Updated2018-05-30 12:57 UTC
RegistrantVodafone Czech Republic a.s.
Phone+420271171111
Addressnamesti Junkovych 2, 155 00, Prague 5, CZECH REPUBLIC
Admin ContactOSKAR LIR
AddressVodafone Czech Republic a.s., namesti Junkovych 2, Praha 5, 15500, Czech Republic
Tech ContactOSKAR LIR
AddressVodafone Czech Republic a.s., namesti Junkovych 2, Praha 5, 15500, Czech Republic
Abuse Contact[email protected]
Abuse Phone+420 271 171 626
Statusactive
Registry RDAPhttps://rdap.db.ripe.net
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Raw WHOIS response

% This is the RIPE Database query service.
% The objects are in RPSL format.
%
% The RIPE Database is subject to Terms and Conditions.
% See https://docs.db.ripe.net/terms-conditions.html

% Note: this output has been filtered.
%       To receive output for a database update, use the "-B" flag.

% Information related to '31.30.0.0 - 31.30.255.255'

% Abuse contact for '31.30.0.0 - 31.30.255.255' is '[email protected]'

inetnum:        31.30.0.0 - 31.30.255.255
netname:        CZ-OSKARMOBIL-20110315
country:        CZ
org:            ORG-CMa1-RIPE
admin-c:        OSKR-RIPE
tech-c:         OSKR-RIPE
status:         ALLOCATED PA
remarks:        Vodafone Czech Republic a.s.
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         VFCZ-MNT
mnt-lower:      OSKR-MNT
created:        2011-03-15T16:10:46Z
last-modified:  2018-05-30T12:57:20Z
source:         RIPE # Filtered

organisation:   ORG-CMa1-RIPE
org-name:       Vodafone Czech Republic a.s.
country:        CZ
reg-nr:         25788001
org-type:       LIR
address:        namesti Junkovych 2
address:        155 00
address:        Prague 5
address:        CZECH REPUBLIC
phone:          +420271171111
fax-no:         +420776971955
mnt-ref:        VFCZ-MNT
mnt-ref:        RIPE-NCC-HM-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         VFCZ-MNT
admin-c:        OSKR-RIPE
abuse-c:        OSKR-RIPE
created:        2004-04-17T11:04:44Z
last-modified:  2026-05-13T07:24:37Z
source:         RIPE # Filtered

role:           OSKAR LIR
address:        Vodafone Czech Republic a.s.
address:        namesti Junkovych 2
address:        Praha 5
address:        15500
address:        Czech Republic
phone:          +420 271 171 626
fax-no:         +420 776 971 912
admin-c:        JG2186-RIPE
tech-c:         JG2186-RIPE
tech-c:         BL54-RIPE
abuse-mailbox:  [email protected]
mnt-by:         VFCZ-MNT
nic-hdl:        OSKR-RIPE
created:        2002-03-22T08:52:34Z
last-modified:  2025-11-28T11:20:04Z
source:         RIPE # Filtered

% Information related to '31.30.0.0/17AS16019'

route:          31.30.0.0/17
descr:          Vodafone Czech Republic a.s.
origin:         AS16019
mnt-by:         VFCZ-MNT
created:        2022-11-23T09:26:34Z
last-modified:  2022-11-23T09:26:34Z
source:         RIPE

% This query was served by the RIPE Database Query Service version 1.124.1 (BUSA)

% Query time: 812 msec
% WHEN: Tue Sep 15 09:43:15 UTC 2026
Raw RDAP JSON (registry) https://rdap.db.ripe.net
{
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    {
      "length": 16,
      "v4prefix": "31.30.0.0"
    }
  ],
  "country": "CZ",
  "endAddress": "31.30.255.255",
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          "value": "https://rdap.db.ripe.net/ip/31.30.0.0/16"
        },
        {
          "href": "http://www.ripe.net/data-tools/support/documentation/terms",
          "rel": "copyright",
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      ],
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            "kind",
            {},
            "text",
            "org"
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          [
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            },
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            "text",
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        },
        {
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          "rel": "copyright",
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      "objectClassName": "entity",
      "roles": [
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        [
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            "OSKAR LIR"
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          [
            "kind",
            {},
            "text",
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          [
            "adr",
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            "[email protected]"
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    {
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          "rel": "self",
          "value": "https://rdap.db.ripe.net/ip/31.30.0.0/16"
        },
        {
          "href": "http://www.ripe.net/data-tools/support/documentation/terms",
          "rel": "copyright",
          "value": "http://www.ripe.net/data-tools/support/documentation/terms"
        }
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            "fn",
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          ],
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            {},
            "text",
            "individual"
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            "org",
            {},
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            "ORG-NCC1-RIPE"
          ]
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    },
    {
      "handle": "VFCZ-MNT",
      "links": [
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          "href": "https://rdap.db.ripe.net/entity/VFCZ-MNT",
          "rel": "self",
          "value": "https://rdap.db.ripe.net/ip/31.30.0.0/16"
        },
        {
          "href": "http://www.ripe.net/data-tools/support/documentation/terms",
          "rel": "copyright",
          "value": "http://www.ripe.net/data-tools/support/documentation/terms"
        }
      ],
      "objectClassName": "entity",
      "roles": [
        "registrant"
      ],
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            "VFCZ-MNT"
          ],
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    {
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          "links": [
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              "rel": "self",
              "value": "https://rdap.db.ripe.net/ip/31.30.0.0/16"
            },
            {
              "href": "http://www.ripe.net/data-tools/support/documentation/terms",
              "rel": "copyright",
              "value": "http://www.ripe.net/data-tools/support/documentation/terms"
            }
          ],
          "objectClassName": "entity",
          "roles": [
            "technical"
          ],
          "vcardArray": [
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            [
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                "version",
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              ],
              [
                "fn",
                {},
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                "Borek Lupomesky"
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                "kind",
                {},
                "text",
                "individual"
              ],
              [
                "adr",
                {
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              [
                "tel",
                {
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                "text",
                "+420 776 971050"
              ],
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                "tel",
                {
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                },
                "text",
                "+420 776 971934"
              ]
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        },
        {
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            },
            {
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              "rel": "copyright",
              "value": "http://www.ripe.net/data-tools/support/documentation/terms"
            }
          ],
          "objectClassName": "entity",
          "roles": [
            "administrative",
            "technical"
          ],
          "vcardArray": [
            "vcard",
            [
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                {},
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                "4.0"
              ],
              [
                "fn",
                {},
                "text",
                "Josef Gryga"
              ],
              [
                "kind",
                {},
                "text",
                "individual"
              ],
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                "adr",
                {
                  "label": "Vodafone Czech Republic a.s.\nnamesti Junkovych 2\n15500 Praha 5\nCzech Republic"
                },
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              ]
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            },
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              "rel": "copyright",
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            }
          ],
          "objectClassName": "entity",
          "roles": [
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      ],
      "vcardArray": [
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        [
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            {},
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          ],
          [
            "fn",
            {},
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            "OSKAR LIR"
          ],
          [
            "kind",
            {},
            "text",
            "group"
          ],
          [
            "adr",
            {
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            },
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              "",
              ""
            ]
          ],
          [
            "tel",
            {
              "type": "voice"
            },
            "text",
            "+420 271 171 626"
          ],
          [
            "tel",
            {
              "type": "fax"
            },
            "text",
            "+420 776 971 912"
          ],
          [
            "email",
            {
              "type": "abuse"
            },
            "text",
            "[email protected]"
          ]
        ]
      ]
    }
  ],
  "events": [
    {
      "eventAction": "registration",
      "eventDate": "2011-03-15T16:10:46Z"
    },
    {
      "eventAction": "last changed",
      "eventDate": "2018-05-30T12:57:20Z"
    }
  ],
  "handle": "31.30.0.0 - 31.30.255.255",
  "ipVersion": "v4",
  "links": [
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      "href": "https://rdap.db.ripe.net/ips/rirSearch1/rdap-up/31.30.0.0%20-%2031.30.255.255",
      "rel": "rdap-up",
      "type": "application/rdap+json",
      "value": "https://rdap.db.ripe.net/ip/31.30.0.0/16"
    },
    {
      "href": "https://rdap.db.ripe.net/ips/rirSearch1/rdap-up/31.30.0.0%20-%2031.30.255.255?status=active",
      "rel": "rdap-up rdap-active",
      "type": "application/rdap+json",
      "value": "https://rdap.db.ripe.net/ip/31.30.0.0/16"
    },
    {
      "href": "https://rdap.db.ripe.net/ips/rirSearch1/rdap-down/31.30.0.0%20-%2031.30.255.255",
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      "value": "https://rdap.db.ripe.net/ip/31.30.0.0/16"
    },
    {
      "href": "https://rdap.db.ripe.net/ips/rirSearch1/rdap-top/31.30.0.0%20-%2031.30.255.255",
      "rel": "rdap-top",
      "type": "application/rdap+json",
      "value": "https://rdap.db.ripe.net/ip/31.30.0.0/16"
    },
    {
      "href": "https://rdap.db.ripe.net/ips/rirSearch1/rdap-top/31.30.0.0%20-%2031.30.255.255?status=active",
      "rel": "rdap-top rdap-active",
      "type": "application/rdap+json",
      "value": "https://rdap.db.ripe.net/ip/31.30.0.0/16"
    },
    {
      "href": "https://rdap.db.ripe.net/ips/rirSearch1/rdap-bottom/31.30.0.0%20-%2031.30.255.255",
      "rel": "rdap-bottom",
      "type": "application/rdap+json",
      "value": "https://rdap.db.ripe.net/ip/31.30.0.0/16"
    },
    {
      "href": "https://rdap.db.ripe.net/ip/31.30.0.0/16",
      "rel": "self",
      "type": "application/rdap+json",
      "value": "https://rdap.db.ripe.net/ip/31.30.0.0/16"
    },
    {
      "href": "http://www.ripe.net/data-tools/support/documentation/terms",
      "rel": "copyright",
      "value": "http://www.ripe.net/data-tools/support/documentation/terms"
    }
  ],
  "name": "CZ-OSKARMOBIL-20110315",
  "notices": [
    {
      "description": [
        "This output has been filtered."
      ],
      "title": "Filtered"
    },
    {
      "description": [
        "If you see inaccuracies in the results, please visit:"
      ],
      "links": [
        {
          "href": "https://www.ripe.net/contact-form?topic=ripe_dbm\u0026show_form=true",
          "rel": "inaccuracy-report",
          "type": "text/html",
          "value": "https://rdap.db.ripe.net/ip/31.30.0.0/16"
        }
      ],
      "title": "Whois Inaccuracy Reporting"
    },
    {
      "description": [
        "Objects returned came from source",
        "RIPE"
      ],
      "title": "Source"
    },
    {
      "description": [
        "This is the RIPE Database query service. The objects are in RDAP format."
      ],
      "links": [
        {
          "href": "http://www.ripe.net/db/support/db-terms-conditions.pdf",
          "rel": "terms-of-service",
          "type": "application/pdf",
          "value": "https://rdap.db.ripe.net/ip/31.30.0.0/16"
        }
      ],
      "title": "Terms and Conditions"
    }
  ],
  "objectClassName": "ip network",
  "parentHandle": "0.0.0.0 - 255.255.255.255",
  "port43": "whois.ripe.net",
  "rdapConformance": [
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    "rirSearch1",
    "ips",
    "cidr0",
    "rdap_level_0",
    "nro_rdap_profile_0",
    "redacted"
  ],
  "redacted": [
    {
      "method": "removal",
      "name": {
        "description": "Personal e-mail information"
      },
      "prePath": "$.entities[?(@.handle=='ORG-CMa1-RIPE')].vcardArray[1][?(@[0]=='e-mail')]",
      "reason": {
        "description": "Personal data"
      }
    },
    {
      "method": "removal",
      "name": {
        "description": "Personal e-mail information"
      },
      "prePath": "$.entities[?(@.handle=='OSKR-RIPE')].vcardArray[1][?(@[0]=='e-mail')]",
      "reason": {
        "description": "Personal data"
      }
    },
    {
      "method": "removal",
      "name": {
        "description": "Personal e-mail information"
      },
      "prePath": "$.entities[?(@.handle=='OSKR-RIPE')].vcardArray[1][?(@[0]=='e-mail')]",
      "reason": {
        "description": "Personal data"
      }
    }
  ],
  "remarks": [
    {
      "description": [
        "Vodafone Czech Republic a.s."
      ]
    }
  ],
  "startAddress": "31.30.0.0",
  "status": [
    "active"
  ],
  "type": "ALLOCATED PA"
}

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.