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/49.158.56.0",
                    "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/49.158.56.0",
                    "rel": "inaccuracy-report",
                    "href": "https://www.apnic.net/manage-ip/using-whois/abuse-and-spamming/invalid-contact-form",
                    "type": "text/html"
                }
            ]
        }
    ],
    "country": "TW",
    "name": "UBBNET-NET",
    "status": [
        "active"
    ],
    "links": [
        {
            "value": "https://twnic.rdap.apnic.net/ip/49.158.56.0",
            "rel": "self",
            "href": "https://twnic.rdap.apnic.net/ip/49.158.56.0/21",
            "type": "application/rdap+json"
        }
    ],
    "remarks": [
        {
            "description": [
                "TFN MEDIA CO., LTD.",
                "11F., No.98, Zhouzi St., Neihu Dist., Taipei City 114, Taiwan (R.O.C.)",
                "Taipei Taiwan"
            ],
            "title": "description"
        },
        {
            "description": [
                "Dynamic Cable DHCP IP Pool",
                "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": [
                "administrative",
                "technical"
            ],
            "links": [
                {
                    "value": "https://twnic.rdap.apnic.net/ip/49.158.56.0",
                    "rel": "self",
                    "href": "https://twnic.rdap.apnic.net/entity/EL200-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": "EL200-TW",
            "objectClassName": "entity",
            "vcardArray": [
                "vcard",
                [
                    [
                        "version",
                        [],
                        "text",
                        "4.0"
                    ],
                    [
                        "fn",
                        [],
                        "text",
                        "Evans Lin"
                    ],
                    [
                        "kind",
                        [],
                        "text",
                        "individual"
                    ],
                    [
                        "adr",
                        {
                            "label": "UNION BROADBAND NETWORK\n11F., No.98, Zhouzi St., Neihu Dist., Taipei City 114, Taiwan (R.O.C.)\nTaipei City Taiwan"
                        },
                        "text",
                        [
                            "",
                            "",
                            "",
                            "",
                            "",
                            "",
                            ""
                        ]
                    ],
                    [
                        "tel",
                        {
                            "type": "voice"
                        },
                        "text",
                        "+886-2-6636-8887 ext. 11672"
                    ],
                    [
                        "tel",
                        {
                            "type": "fax"
                        },
                        "text",
                        "+886-2-6611-2115"
                    ],
                    [
                        "email",
                        [],
                        "text",
                        "evanslin@taiwanmobile.com"
                    ]
                ]
            ]
        }
    ],
    "handle": "49.158.56.0 - 49.158.63.255",
    "type": "ASSIGNED NON-PORTABLE",
    "startAddress": "49.158.56.0",
    "endAddress": "49.158.63.255",
    "objectClassName": "ip network",
    "ipVersion": "v4",
    "cidr0_cidrs": [
        {
            "v4prefix": "49.158.56.0",
            "length": 21
        }
    ],
    "port43": "whois.apnic.net"
}