Domain, IP & ASN lookup.

{
    "rdapConformance": [
        "nro_rdap_profile_0",
        "cidr0",
        "rdap_level_0"
    ],
    "notices": [
        {
            "title": "Source",
            "description": [
                "Objects returned came from source",
                "TWNIC"
            ]
        },
        {
            "title": "Terms and Conditions",
            "description": [
                "This is the APNIC WHOIS Database query service. The objects are in RDAP format.",
                "This information has been partially mirrored by APNIC from TWNIC. To obtain more specific information, please use the TWNIC whois server at whois.twnic.net."
            ],
            "links": [
                {
                    "value": "https://twnic.rdap.apnic.net/ip/203.78.176.0",
                    "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://twnic.rdap.apnic.net/ip/203.78.176.0",
                    "rel": "inaccuracy-report",
                    "href": "https://www.apnic.net/manage-ip/using-whois/abuse-and-spamming/invalid-contact-form",
                    "type": "text/html"
                }
            ]
        }
    ],
    "country": "TW",
    "name": "TWGATE-NET",
    "status": [
        "active"
    ],
    "links": [
        {
            "value": "https://twnic.rdap.apnic.net/ip/203.78.176.0",
            "rel": "self",
            "href": "https://twnic.rdap.apnic.net/ip/203.78.176.0/24",
            "type": "application/rdap+json"
        }
    ],
    "remarks": [
        {
            "description": [
                "Chunghwa Telecom International Business Group",
                "",
                "Taipei Taiwan"
            ],
            "title": "description"
        },
        {
            "description": [
                "TWGate Service ( TP)",
                "This information has been partially mirrored by APNIC from",
                "TWNIC. To obtain more specific information, please use the",
                "TWNIC whois server at whois.twnic.net."
            ],
            "title": "remarks"
        }
    ],
    "entities": [
        {
            "roles": [
                "technical"
            ],
            "links": [
                {
                    "value": "https://twnic.rdap.apnic.net/ip/203.78.176.0",
                    "rel": "self",
                    "href": "https://twnic.rdap.apnic.net/entity/SZ695-TW",
                    "type": "application/rdap+json"
                }
            ],
            "remarks": [
                {
                    "description": [
                        "This information has been partially mirrored by APNIC from",
                        "TWNIC. To obtain more specific information, please use the",
                        "TWNIC whois server at whois.twnic.net."
                    ],
                    "title": "remarks"
                }
            ],
            "handle": "SZ695-TW",
            "objectClassName": "entity",
            "vcardArray": [
                "vcard",
                [
                    [
                        "version",
                        [],
                        "text",
                        "4.0"
                    ],
                    [
                        "fn",
                        [],
                        "text",
                        "Shuo-Wei Zheng"
                    ],
                    [
                        "kind",
                        [],
                        "text",
                        "individual"
                    ],
                    [
                        "adr",
                        {
                            "label": "Chunghwa Telecom Int’l Business Group\n\nTaipei Taiwan"
                        },
                        "text",
                        [
                            "",
                            "",
                            "",
                            "",
                            "",
                            "",
                            ""
                        ]
                    ],
                    [
                        "tel",
                        {
                            "type": "voice"
                        },
                        "text",
                        "+886-2-2344-3574"
                    ],
                    [
                        "tel",
                        {
                            "type": "fax"
                        },
                        "text",
                        "+886-2-2356-8357"
                    ],
                    [
                        "email",
                        [],
                        "text",
                        "shuowei@cht.com.tw"
                    ]
                ]
            ]
        },
        {
            "roles": [
                "administrative"
            ],
            "links": [
                {
                    "value": "https://twnic.rdap.apnic.net/ip/203.78.176.0",
                    "rel": "self",
                    "href": "https://twnic.rdap.apnic.net/entity/MY648-TW",
                    "type": "application/rdap+json"
                }
            ],
            "remarks": [
                {
                    "description": [
                        "This information has been partially mirrored by APNIC from",
                        "TWNIC. To obtain more specific information, please use the",
                        "TWNIC whois server at whois.twnic.net."
                    ],
                    "title": "remarks"
                }
            ],
            "handle": "MY648-TW",
            "objectClassName": "entity",
            "vcardArray": [
                "vcard",
                [
                    [
                        "version",
                        [],
                        "text",
                        "4.0"
                    ],
                    [
                        "fn",
                        [],
                        "text",
                        "Ming - Hsien Yang"
                    ],
                    [
                        "kind",
                        [],
                        "text",
                        "individual"
                    ],
                    [
                        "adr",
                        {
                            "label": "Chunghwa Telecom  International  Business Group\n\nTaipei Taiwan"
                        },
                        "text",
                        [
                            "",
                            "",
                            "",
                            "",
                            "",
                            "",
                            ""
                        ]
                    ],
                    [
                        "tel",
                        {
                            "type": "voice"
                        },
                        "text",
                        "+886-2-2344-3574"
                    ],
                    [
                        "tel",
                        {
                            "type": "fax"
                        },
                        "text",
                        "+886-2-2356-8357"
                    ],
                    [
                        "email",
                        [],
                        "text",
                        "mhyang@cht.com.tw"
                    ]
                ]
            ]
        }
    ],
    "handle": "203.78.176.0 - 203.78.176.255",
    "type": "ASSIGNED NON-PORTABLE",
    "startAddress": "203.78.176.0",
    "endAddress": "203.78.176.255",
    "objectClassName": "ip network",
    "ipVersion": "v4",
    "cidr0_cidrs": [
        {
            "v4prefix": "203.78.176.0",
            "length": 24
        }
    ],
    "port43": "whois.apnic.net"
}