Domain, IP & ASN lookup.

{
    "rdapConformance": [
        "history_version_0",
        "nro_rdap_profile_0",
        "cidr0",
        "rdap_level_0"
    ],
    "notices": [
        {
            "title": "Source",
            "description": [
                "Objects returned came from source",
                "APNIC"
            ]
        },
        {
            "title": "Terms and Conditions",
            "description": [
                "This is the APNIC WHOIS Database query service. The objects are in RDAP format."
            ],
            "links": [
                {
                    "value": "https://rdap.apnic.net/ip/203.178.0.0",
                    "rel": "terms-of-service",
                    "href": "http://www.apnic.net/db/dbcopyright.html",
                    "type": "text/html"
                }
            ]
        },
        {
            "title": "Whois Inaccuracy Reporting",
            "description": [
                "If you see inaccuracies in the results, please visit: "
            ],
            "links": [
                {
                    "value": "https://rdap.apnic.net/ip/203.178.0.0",
                    "rel": "inaccuracy-report",
                    "href": "https://www.apnic.net/manage-ip/using-whois/abuse-and-spamming/invalid-contact-form",
                    "type": "text/html"
                }
            ]
        }
    ],
    "country": "JP",
    "name": "JPNIC-NET-JP",
    "status": [
        "active"
    ],
    "events": [
        {
            "eventAction": "registration",
            "eventDate": "2008-09-04T06:49:35Z"
        },
        {
            "eventAction": "last changed",
            "eventDate": "2008-09-04T06:49:35Z"
        }
    ],
    "links": [
        {
            "value": "https://rdap.apnic.net/ip/203.178.0.0",
            "rel": "self",
            "href": "https://rdap.apnic.net/ip/203.180.0.0/14",
            "type": "application/rdap+json"
        }
    ],
    "remarks": [
        {
            "description": [
                "Japan Network Information Center"
            ],
            "title": "description"
        },
        {
            "description": [
                "JPNIC Allocation Block",
                "Authoritative information regarding assignments and",
                "allocations made from within this block can also be",
                "queried at whois.nic.ad.jp. To obtain an English",
                "output query whois -h whois.nic.ad.jp x.x.x.x/e"
            ],
            "title": "remarks"
        }
    ],
    "entities": [
        {
            "roles": [
                "technical",
                "administrative"
            ],
            "events": [
                {
                    "eventAction": "registration",
                    "eventDate": "2008-09-04T07:54:15Z"
                },
                {
                    "eventAction": "last changed",
                    "eventDate": "2022-01-05T03:04:02Z"
                }
            ],
            "links": [
                {
                    "value": "https://rdap.apnic.net/ip/203.178.0.0",
                    "rel": "self",
                    "href": "https://rdap.apnic.net/entity/JNIC1-AP",
                    "type": "application/rdap+json"
                }
            ],
            "handle": "JNIC1-AP",
            "objectClassName": "entity",
            "vcardArray": [
                "vcard",
                [
                    [
                        "version",
                        [],
                        "text",
                        "4.0"
                    ],
                    [
                        "fn",
                        [],
                        "text",
                        "Japan Network Information Center"
                    ],
                    [
                        "kind",
                        [],
                        "text",
                        "group"
                    ],
                    [
                        "adr",
                        {
                            "label": "Uchikanda OS Bldg 4F, 2-12-6 Uchi-Kanda\nChiyoda-ku, Tokyo 101-0047, Japan"
                        },
                        "text",
                        [
                            "",
                            "",
                            "",
                            "",
                            "",
                            "",
                            ""
                        ]
                    ],
                    [
                        "tel",
                        {
                            "type": "voice"
                        },
                        "text",
                        "+81-3-5297-2311"
                    ],
                    [
                        "tel",
                        {
                            "type": "fax"
                        },
                        "text",
                        "+81-3-5297-2312"
                    ],
                    [
                        "email",
                        [],
                        "text",
                        "hostmaster@nic.ad.jp"
                    ]
                ]
            ]
        }
    ],
    "handle": "203.178.0.0 - 203.183.255.255",
    "type": "ALLOCATED PORTABLE",
    "startAddress": "203.178.0.0",
    "endAddress": "203.183.255.255",
    "objectClassName": "ip network",
    "ipVersion": "v4",
    "cidr0_cidrs": [
        {
            "v4prefix": "203.178.0.0",
            "length": 15
        },
        {
            "v4prefix": "203.180.0.0",
            "length": 14
        }
    ],
    "port43": "whois.apnic.net"
}