Registry Data Access Protocol (RDAP) is a Whois alternative for querying resource registration data from Domain Name Registries (DNRs) and Regional Internet Registries (RIRs) like ARIN. When you use RDAP clients to query registration data, responses are delivered in JavaScript Object Notation (JSON) format (instead of the text format provided by Whois). When you use the Search Site or Whois feature or use https://search.arin.net/rdap/ for Whois queries, RDAP responses are returned in formatted HTML.
A bootstrap server is a special type of server for helping clients find an authoritative server to query (this is called bootstrapping). Query bootstrapping can be an expensive process for some clients, and a bootstrap server can alleviate that expense by pre-loading the bootstrapping information. To utilize an RDAP bootstrap server, an RDAP client simply sends RDAP queries and receives HTTP redirects to the authoritative server.
Bootstrap files are JSON files specified in RFC 7484. The Internet Assigned Numbers Authority (IANA) publishes the following files:
If you use the correct query URL in your RDAP query, ARIN’s bootstrap server automatically sends the queries to the correct server.
You can use RDAP to get registration information from ARIN using the following methods:
For more information on using the Whois/RDAP web interface, visit the Whois page.
The parts of an RDAP query are comprised of the object you are querying and the bootstrap server (optional). For example, to query an object using ARIN’s bootstrap server, you would enter the command:
See Also
Whois.com - Free Whois LookupSearching Whois Using a CLIARIN’s Whois: What Data is Public Information and How Can it be Accessed?ARIN: What Is It and What Does It Do?where <object> is an IP address, domain name, ASN, or entity identifier.
where <object> is an IP address, domain name, ASN, or entity identifier.
For a specific example, to query an ASN of AS64496, you would enter the following query (using bootstrap):
The returned response for a query for AS64496 might look like the following example.
You can create RDAP queries with a URL structure that can be used with command-line tools like cURL, or included in scripts written in languages like Ruby or perl.
where <rdap-url> is the registration information provider’s RDAP server URL (in this case, ARIN’s RDAP URL) and <object> is an IP address, domain name, ASN, or entity identifier. The following sections provide examples of RDAP queries.
See Also
Whois-RWS API Documentationwhere the path segment following ip is either an IPv4 dotted decimal or IPv6 [RFC5952] address (i.e., 2001:500:11::) or an IPv4 or IPv6 Classless Inter-domain Routing (CIDR) [RFC4632] notation address block (i.e., 12.0.0.0/8).
This query searches for forward domain name or reverse domain information that matches the search term you enter. Since ARIN’s registry does not contain forward domain information, if you are searching for forward domains, your query will return results from a domain registrar (for example, Verisign), and the source of the results will be indicated in the results. Some registrars will not provide information for all fields in the result; for example, if the registrar does not collect that particular data, or if privacy laws prevent the registrar from sharing that data.
Reverse domain information (also called an “inverse address domain”) includes the “in-addr.arpa” or “ip6.arpa” domain name that is used in reverse DNS. Reverse domain information, along with pointer (PTR) records, is used to find the domain name associated with an IP address. If you are searching for the reverse domain associated with an IP address (for example, 0.43.199.in-addr.arpa that is associated with 199.43.0.0), the information will come from ARIN or the RIR where the reverse DNS is configured.
where <rdap-url> is the registration information provider’s RDAP server URL (in this case, ARIN’s RDAP URL) and domain is the forward domain, in-addr.arpa, or ip6.arpa domain.
https://rdap.arin.net/registry/domain/152.112.149.in-addr.arpa.
where ORIGIN_AS_NUMBER is the value in the Origin AS field associated with the network. The Origin AS field contains a list of the ASNs, separated by commas or whitespace, from which the addresses in the network address block(s) may originate. (Do not include the AS prefix.)
To prevent performance issues, an Origin AS query limits the returned networks to 256 results.
{ "rdapConformance" : [ "nro_rdap_profile_0", "rdap_level_0", "arin_originas0", "cidr0" ], "notices" : [ { "title" : "Terms of Service", "description" : [ "By using the ARIN RDAP/Whois service, you are agreeing to the RDAP/Whois Terms of Use" ], "links" : [ { "value" : "https://rdap.arin.net/registry/arin_originas0_networksbyoriginas/10745", "rel" : "terms-of-service", "type" : "text/html", "href" : "https://www.arin.net/resources/registry/whois/tou/" } ] }, { "title" : "Whois Inaccuracy Reporting", "description" : [ "If you see inaccuracies in the results, please visit: " ], "links" : [ { "value" : "https://rdap.arin.net/registry/arin_originas0_networksbyoriginas/10745", "rel" : "inaccuracy-report", "type" : "text/html", "href" : "https://www.arin.net/resources/registry/whois/inaccuracy_reporting/" } ] }, { "title" : "Copyright Notice", "description" : [ "Copyright 1997-2021, American Registry for Internet Numbers, Ltd." ] } ], "arin_originas0_networkSearchResults" : [ { "handle" : "NET-192-136-136-0-1", "startAddress" : "192.136.136.0", "endAddress" : "192.136.136.255", "ipVersion" : "v4", "name" : "ARIN-CHA-1", "type" : "DIRECT ASSIGNMENT", "parentHandle" : "NET-192-0-0-0-0", "events" : [ { "eventAction" : "last changed", "eventDate" : "2015-07-15T11:11:57-04:00" }, { "eventAction" : "registration", "eventDate" : "2002-04-17T00:00:00-04:00" } ], "links" : [ { "value" : "https://rdap.arin.net/registry/arin_originas0_networksbyoriginas/10745", "rel" : "self", "type" : "application/rdap+json", "href" : "https://rdap.arin.net/registry/ip/192.136.136.0" }, { "value" : "https://rdap.arin.net/registry/arin_originas0_networksbyoriginas/10745", "rel" : "alternate", "type" : "application/xml", "href" : "https://whois.arin.net/rest/net/NET-192-136-136-0-1" } ], "entities" : [ { "handle" : "ARINOPS", "vcardArray" : [ "vcard", [ [ "version", { }, "text", "4.0" ], [ "fn", { }, "text", "ARIN Operations" ], [ "adr", { "label" : "PO Box 232290\nCentreville\nVA\n20120\nUnited States" }, "text", [ "", "", "", "", "", "", "" ] ], [ "kind", { }, "text", "org" ] ] ], "roles" : [ "registrant" ], "links" : [ { "value" : "https://rdap.arin.net/registry/arin_originas0_networksbyoriginas/10745", "rel" : "self", "type" : "application/rdap+json", "href" : "https://rdap.arin.net/registry/entity/ARINOPS" }, { "value" : "https://rdap.arin.net/registry/arin_originas0_networksbyoriginas/10745", "rel" : "alternate", "type" : "application/xml", "href" : "https://whois.arin.net/rest/org/ARINOPS" } ], "events" : [ { "eventAction" : "last changed", "eventDate" : "2020-06-16T16:12:29-04:00" }, { "eventAction" : "registration", "eventDate" : "2012-09-07T18:41:45-04:00" } ], "entities" : [ { "handle" : "FORST20-ARIN", "vcardArray" : [ "vcard", [ [ "version", { }, "text", "4.0" ], [ "adr", { "label" : "PO Box 232290\nCentreville\nVA\n20120\nUnited States" }, "text", [ "", "", "", "", "", "", "" ] ], [ "fn", { }, "text", "Reggie Forster" ], [ "n", { }, "text", [ "Forster", "Reggie", "", "", "" ] ], [ "kind", { }, "text", "individual" ], [ "email", { }, "text", "rforster@arin.net" ], [ "tel", { "type" : [ "work", "voice" ] }, "text", "+1-703-555-1212" ] ] ], "roles" : [ "technical" ], "links" : [ { "value" : "https://rdap.arin.net/registry/arin_originas0_networksbyoriginas/10745", "rel" : "self", "type" : "application/rdap+json", "href" : "https://rdap.arin.net/registry/entity/FORST20-ARIN" }, { "value" : "https://rdap.arin.net/registry/arin_originas0_networksbyoriginas/10745", "rel" : "alternate", "type" : "application/xml", "href" : "https://whois.arin.net/rest/poc/FORST20-ARIN" } ], "events" : [ { "eventAction" : "last changed", "eventDate" : "2021-06-16T15:43:22-04:00" }, { "eventAction" : "registration", "eventDate" : "2020-06-16T16:11:43-04:00" } ], "status" : [ "validated" ], "port43" : "whois.arin.net", "objectClassName" : "entity" }, { "handle" : "KOSTE6-ARIN", "vcardArray" : [ "vcard", [ [ "version", { }, "text", "4.0" ], [ "adr", { "label" : "PO Box 232290\nCentreville\nVA\n20120\nUnited States" }, "text", [ "", "", "", "", "", "", "" ] ], [ "fn", { }, "text", "Mark Kosters" ], [ "n", { }, "text", [ "Kosters", "Mark", "", "", "" ] ], [ "kind", { }, "text", "individual" ], [ "email", { }, "text", "markk@arin.net" ], [ "tel", { "type" : [ "work", "voice" ] }, "text", "+1-703-555-1212" ] ] ], "roles" : [ "administrative" ], "links" : [ { "value" : "https://rdap.arin.net/registry/arin_originas0_networksbyoriginas/10745", "rel" : "self", "type" : "application/rdap+json", "href" : "https://rdap.arin.net/registry/entity/KOSTE6-ARIN" }, { "value" : "https://rdap.arin.net/registry/arin_originas0_networksbyoriginas/10745", "rel" : "alternate", "type" : "application/xml", "href" : "https://whois.arin.net/rest/poc/KOSTE6-ARIN" } ], "events" : [ { "eventAction" : "last changed", "eventDate" : "2021-04-23T12:03:43-04:00" }, { "eventAction" : "registration", "eventDate" : "2012-09-07T18:38:22-04:00" } ], "status" : [ "validated" ], "port43" : "whois.arin.net", "objectClassName" : "entity" }, { "handle" : "AOA4-ARIN", "vcardArray" : [ "vcard", [ [ "version", { }, "text", "4.0" ], [ "adr", { "label" : "P.O. Box 232290\nCentreville\nVA\n20120\nUnited States" }, "text", [ "", "", "", "", "", "", "" ] ], [ "fn", { }, "text", "ARIN Operations Abuse" ], [ "org", { }, "text", "ARIN Operations Abuse" ], [ "kind", { }, "text", "group" ], [ "email", { }, "text", "abuse@arin.net" ], [ "tel", { "type" : [ "work", "voice" ] }, "text", "+1-703-555-1212" ] ] ], "roles" : [ "abuse" ], "links" : [ { "value" : "https://rdap.arin.net/registry/arin_originas0_networksbyoriginas/10745", "rel" : "self", "type" : "application/rdap+json", "href" : "https://rdap.arin.net/registry/entity/AOA4-ARIN" }, { "value" : "https://rdap.arin.net/registry/arin_originas0_networksbyoriginas/10745", "rel" : "alternate", "type" : "application/xml", "href" : "https://whois.arin.net/rest/poc/AOA4-ARIN" } ], "events" : [ { "eventAction" : "last changed", "eventDate" : "2021-06-15T10:40:47-04:00" }, { "eventAction" : "registration", "eventDate" : "2012-09-07T18:40:58-04:00" } ], "status" : [ "validated" ], "port43" : "whois.arin.net", "objectClassName" : "entity" }, { "handle" : "TOSCA5-ARIN", "vcardArray" : [ "vcard", [ [ "version", { }, "text", "4.0" ], [ "adr", { "label" : "PO Box 232290\nCentreville\nVA\n20120\nUnited States" }, "text", [ "", "", "", "", "", "", "" ] ], [ "fn", { }, "text", "Pete Toscano" ], [ "n", { }, "text", [ "Toscano", "Pete", "", "", "" ] ], [ "kind", { }, "text", "individual" ], [ "email", { }, "text", "pete@arin.net" ], [ "tel", { "type" : [ "work", "voice" ] }, "text", "+1-703-555-1212" ] ] ], "roles" : [ "technical" ], "links" : [ { "value" : "https://rdap.arin.net/registry/arin_originas0_networksbyoriginas/10745", "rel" : "self", "type" : "application/rdap+json", "href" : "https://rdap.arin.net/registry/entity/TOSCA5-ARIN" }, { "value" : "https://rdap.arin.net/registry/arin_originas0_networksbyoriginas/10745", "rel" : "alternate", "type" : "application/xml", "href" : "https://whois.arin.net/rest/poc/TOSCA5-ARIN" } ], "events" : [ { "eventAction" : "last changed", "eventDate" : "2021-06-14T17:38:09-04:00" }, { "eventAction" : "registration", "eventDate" : "2013-01-15T15:04:27-05:00" } ], "status" : [ "validated" ], "port43" : "whois.arin.net", "objectClassName" : "entity" }, { "handle" : "JEFFE114-ARIN", "vcardArray" : [ "vcard", [ [ "version", { }, "text", "4.0" ], [ "adr", { "label" : "PO Box 232290\nCentreville\nVA\n20120\nUnited States" }, "text", [ "", "", "", "", "", "", "" ] ], [ "fn", { }, "text", "David Jeffers" ], [ "n", { }, "text", [ "Jeffers", "David", "", "", "" ] ], [ "kind", { }, "text", "individual" ], [ "email", { }, "text", "david@arin.net" ], [ "tel", { "type" : [ "work", "voice" ] }, "text", "+1-703-555-1212" ] ] ], "roles" : [ "dns", "noc" ], "links" : [ { "value" : "https://rdap.arin.net/registry/arin_originas0_networksbyoriginas/10745", "rel" : "self", "type" : "application/rdap+json", "href" : "https://rdap.arin.net/registry/entity/JEFFE114-ARIN" }, { "value" : "https://rdap.arin.net/registry/arin_originas0_networksbyoriginas/10745", "rel" : "alternate", "type" : "application/xml", "href" : "https://whois.arin.net/rest/poc/JEFFE114-ARIN" } ], "events" : [ { "eventAction" : "last changed", "eventDate" : "2021-04-20T11:43:41-04:00" }, { "eventAction" : "registration", "eventDate" : "2020-04-16T16:41:31-04:00" } ], "status" : [ "validated" ], "port43" : "whois.arin.net", "objectClassName" : "entity" }, { "handle" : "MJO282-ARIN", "vcardArray" : [ "vcard", [ [ "version", { }, "text", "4.0" ], [ "adr", { "label" : "PO Box 232290\nCentreville\nVA\n20120\nUnited States" }, "text", [ "", "", "", "", "", "", "" ] ], [ "fn", { }, "text", "Michael J O'Neill" ], [ "n", { }, "text", [ "O'Neill", "Michael", "J", "", "" ] ], [ "kind", { }, "text", "individual" ], [ "email", { }, "text", "mjo@arin.net" ], [ "tel", { "type" : [ "work", "voice" ] }, "text", "+1-703-555-1212" ] ] ], "roles" : [ "technical", "noc" ], "links" : [ { "value" : "https://rdap.arin.net/registry/arin_originas0_networksbyoriginas/10745", "rel" : "self", "type" : "application/rdap+json", "href" : "https://rdap.arin.net/registry/entity/MJO282-ARIN" }, { "value" : "https://rdap.arin.net/registry/arin_originas0_networksbyoriginas/10745", "rel" : "alternate", "type" : "application/xml", "href" : "https://whois.arin.net/rest/poc/MJO282-ARIN" } ], "events" : [ { "eventAction" : "last changed", "eventDate" : "2021-04-26T15:19:39-04:00" }, { "eventAction" : "registration", "eventDate" : "2012-09-19T14:33:35-04:00" } ], "status" : [ "validated" ], "port43" : "whois.arin.net", "objectClassName" : "entity" } ], "port43" : "whois.arin.net", "objectClassName" : "entity" } ], "port43" : "whois.arin.net", "status" : [ "active" ], "objectClassName" : "ip network", "cidr0_cidrs" : [ { "v4prefix" : "192.136.136.0", "length" : 24 } ], "arin_originas0_originautnums" : [ 10745 ] }, { "handle" : "NET-192-149-252-0-1", "startAddress" : "192.149.252.0", "endAddress" : "192.149.252.255", "ipVersion" : "v4", "name" : "ARIN-CHA-1", "type" : "DIRECT ASSIGNMENT", "parentHandle" : "NET-192-0-0-0-0", "events" : [ { "eventAction" : "last changed", "eventDate" : "2015-07-15T11:11:35-04:00" }, { "eventAction" : "registration", "eventDate" : "1997-11-05T00:00:00-05:00" } ], "links" : [ { "value" : "https://rdap.arin.net/registry/arin_originas0_networksbyoriginas/10745", "rel" : "self", "type" : "application/rdap+json", "href" : "https://rdap.arin.net/registry/ip/192.149.252.0" }, { "value" : "https://rdap.arin.net/registry/arin_originas0_networksbyoriginas/10745", "rel" : "alternate", "type" : "application/xml", "href" : "https://whois.arin.net/rest/net/NET-192-149-252-0-1" } ], "entities" : [ { "handle" : "ARINOPS", "vcardArray" : [ "vcard", [ [ "version", { }, "text", "4.0" ], [ "fn", { }, "text", "ARIN Operations" ], [ "adr", { "label" : "PO Box 232290\nCentreville\nVA\n20120\nUnited States" }, "text", [ "", "", "", "", "", "", "" ] ], [ "kind", { }, "text", "org" ] ] ], "roles" : [ "registrant" ], "links" : [ { "value" : "https://rdap.arin.net/registry/arin_originas0_networksbyoriginas/10745", "rel" : "self", "type" : "application/rdap+json", "href" : "https://rdap.arin.net/registry/entity/ARINOPS" }, { "value" : "https://rdap.arin.net/registry/arin_originas0_networksbyoriginas/10745", "rel" : "alternate", "type" : "application/xml", "href" : "https://whois.arin.net/rest/org/ARINOPS" } ], "events" : [ { "eventAction" : "last changed", "eventDate" : "2020-06-16T16:12:29-04:00" }, { "eventAction" : "registration", "eventDate" : "2012-09-07T18:41:45-04:00" } ], "entities" : [ { "handle" : "FORST20-ARIN", "vcardArray" : [ "vcard", [ [ "version", { }, "text", "4.0" ], [ "adr", { "label" : "PO Box 232290\nCentreville\nVA\n20120\nUnited States" }, "text", [ "", "", "", "", "", "", "" ] ], [ "fn", { }, "text", "Reggie Forster" ], [ "n", { }, "text", [ "Forster", "Reggie", "", "", "" ] ], [ "kind", { }, "text", "individual" ], [ "email", { }, "text", "rforster@arin.net" ], [ "tel", { "type" : [ "work", "voice" ] }, "text", "+1-703-555-1212" ] ] ], "roles" : [ "technical" ], "links" : [ { "value" : "https://rdap.arin.net/registry/arin_originas0_networksbyoriginas/10745", "rel" : "self", "type" : "application/rdap+json", "href" : "https://rdap.arin.net/registry/entity/FORST20-ARIN" }, { "value" : "https://rdap.arin.net/registry/arin_originas0_networksbyoriginas/10745", "rel" : "alternate", "type" : "application/xml", "href" : "https://whois.arin.net/rest/poc/FORST20-ARIN" } ], "events" : [ { "eventAction" : "last changed", "eventDate" : "2021-06-16T15:43:22-04:00" }, { "eventAction" : "registration", "eventDate" : "2020-06-16T16:11:43-04:00" } ], "status" : [ "validated" ], "port43" : "whois.arin.net", "objectClassName" : "entity" }, { "handle" : "KOSTE6-ARIN", "vcardArray" : [ "vcard", [ [ "version", { }, "text", "4.0" ], [ "adr", { "label" : "PO Box 232290\nCentreville\nVA\n20120\nUnited States" }, "text", [ "", "", "", "", "", "", "" ] ], [ "fn", { }, "text", "Mark Kosters" ], [ "n", { }, "text", [ "Kosters", "Mark", "", "", "" ] ], [ "kind", { }, "text", "individual" ], [ "email", { }, "text", "markk@arin.net" ], [ "tel", { "type" : [ "work", "voice" ] }, "text", "+1-703-555-1212" ] ] ], "roles" : [ "administrative" ], "links" : [ { "value" : "https://rdap.arin.net/registry/arin_originas0_networksbyoriginas/10745", "rel" : "self", "type" : "application/rdap+json", "href" : "https://rdap.arin.net/registry/entity/KOSTE6-ARIN" }, { "value" : "https://rdap.arin.net/registry/arin_originas0_networksbyoriginas/10745", "rel" : "alternate", "type" : "application/xml", "href" : "https://whois.arin.net/rest/poc/KOSTE6-ARIN" } ], "events" : [ { "eventAction" : "last changed", "eventDate" : "2021-04-23T12:03:43-04:00" }, { "eventAction" : "registration", "eventDate" : "2012-09-07T18:38:22-04:00" } ], "status" : [ "validated" ], "port43" : "whois.arin.net", "objectClassName" : "entity" }, { "handle" : "AOA4-ARIN", "vcardArray" : [ "vcard", [ [ "version", { }, "text", "4.0" ], [ "adr", { "label" : "P.O. Box 232290\nCentreville\nVA\n20120\nUnited States" }, "text", [ "", "", "", "", "", "", "" ] ], [ "fn", { }, "text", "ARIN Operations Abuse" ], [ "org", { }, "text", "ARIN Operations Abuse" ], [ "kind", { }, "text", "group" ], [ "email", { }, "text", "abuse@arin.net" ], [ "tel", { "type" : [ "work", "voice" ] }, "text", "+1-703-555-1212" ] ] ], "roles" : [ "abuse" ], "links" : [ { "value" : "https://rdap.arin.net/registry/arin_originas0_networksbyoriginas/10745", "rel" : "self", "type" : "application/rdap+json", "href" : "https://rdap.arin.net/registry/entity/AOA4-ARIN" }, { "value" : "https://rdap.arin.net/registry/arin_originas0_networksbyoriginas/10745", "rel" : "alternate", "type" : "application/xml", "href" : "https://whois.arin.net/rest/poc/AOA4-ARIN" } ], "events" : [ { "eventAction" : "last changed", "eventDate" : "2021-06-15T10:40:47-04:00" }, { "eventAction" : "registration", "eventDate" : "2012-09-07T18:40:58-04:00" } ], "status" : [ "validated" ], "port43" : 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[ "email", { }, "text", "rforster@arin.net" ], [ "tel", { "type" : [ "work", "voice" ] }, "text", "+1-703-555-1212" ] ] ], "roles" : [ "technical" ], "links" : [ { "value" : "https://rdap.arin.net/registry/arin_originas0_networksbyoriginas/10745", "rel" : "self", "type" : "application/rdap+json", "href" : "https://rdap.arin.net/registry/entity/FORST20-ARIN" }, { "value" : "https://rdap.arin.net/registry/arin_originas0_networksbyoriginas/10745", "rel" : "alternate", "type" : "application/xml", "href" : "https://whois.arin.net/rest/poc/FORST20-ARIN" } ], "events" : [ { "eventAction" : "last changed", "eventDate" : "2021-06-16T15:43:22-04:00" }, { "eventAction" : "registration", "eventDate" : "2020-06-16T16:11:43-04:00" } ], "status" : [ "validated" ], "port43" : "whois.arin.net", "objectClassName" : "entity" }, { "handle" : "KOSTE6-ARIN", "vcardArray" : [ "vcard", [ [ "version", { }, "text", "4.0" ], [ "adr", { "label" : "PO Box 232290\nCentreville\nVA\n20120\nUnited States" }, "text", [ 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"AOA4-ARIN", "vcardArray" : [ "vcard", [ [ "version", { }, "text", "4.0" ], [ "adr", { "label" : "P.O. Box 232290\nCentreville\nVA\n20120\nUnited States" }, "text", [ "", "", "", "", "", "", "" ] ], [ "fn", { }, "text", "ARIN Operations Abuse" ], [ "org", { }, "text", "ARIN Operations Abuse" ], [ "kind", { }, "text", "group" ], [ "email", { }, "text", "abuse@arin.net" ], [ "tel", { "type" : [ "work", "voice" ] }, "text", "+1-703-555-1212" ] ] ], "roles" : [ "abuse" ], "links" : [ { "value" : "https://rdap.arin.net/registry/arin_originas0_networksbyoriginas/10745", "rel" : "self", "type" : "application/rdap+json", "href" : "https://rdap.arin.net/registry/entity/AOA4-ARIN" }, { "value" : "https://rdap.arin.net/registry/arin_originas0_networksbyoriginas/10745", "rel" : "alternate", "type" : "application/xml", "href" : "https://whois.arin.net/rest/poc/AOA4-ARIN" } ], "events" : [ { "eventAction" : "last changed", "eventDate" : "2021-06-15T10:40:47-04:00" }, { "eventAction" : "registration", "eventDate" : "2012-09-07T18:40:58-04:00" } ], "status" : [ "validated" ], "port43" : "whois.arin.net", "objectClassName" : "entity" }, { "handle" : "TOSCA5-ARIN", "vcardArray" : [ "vcard", [ [ "version", { }, "text", "4.0" ], [ "adr", { "label" : "PO Box 232290\nCentreville\nVA\n20120\nUnited States" }, "text", [ "", "", "", "", "", "", "" ] ], [ "fn", { }, "text", "Pete Toscano" ], [ "n", { }, "text", [ "Toscano", "Pete", "", "", "" ] ], [ "kind", { }, "text", "individual" ], [ "email", { }, "text", "pete@arin.net" ], [ "tel", { "type" : [ "work", "voice" ] }, "text", "+1-703-555-1212" ] ] ], "roles" : [ "technical" ], "links" : [ { "value" : "https://rdap.arin.net/registry/arin_originas0_networksbyoriginas/10745", "rel" : "self", "type" : "application/rdap+json", "href" : "https://rdap.arin.net/registry/entity/TOSCA5-ARIN" }, { "value" : "https://rdap.arin.net/registry/arin_originas0_networksbyoriginas/10745", "rel" : "alternate", "type" : "application/xml", "href" : "https://whois.arin.net/rest/poc/TOSCA5-ARIN" } ], "events" : [ { "eventAction" : "last changed", "eventDate" : "2021-06-14T17:38:09-04:00" }, { "eventAction" : "registration", "eventDate" : "2013-01-15T15:04:27-05:00" } ], "status" : [ "validated" ], "port43" : "whois.arin.net", "objectClassName" : "entity" }, { "handle" : "JEFFE114-ARIN", "vcardArray" : [ "vcard", [ [ "version", { }, "text", "4.0" ], [ "adr", { "label" : "PO Box 232290\nCentreville\nVA\n20120\nUnited States" }, "text", [ "", "", "", "", "", "", "" ] ], [ "fn", { }, "text", "David Jeffers" ], [ "n", { }, "text", [ "Jeffers", "David", "", "", "" ] ], [ "kind", { }, "text", "individual" ], [ "email", { }, "text", "david@arin.net" ], [ "tel", { "type" : [ "work", "voice" ] }, "text", "+1-703-555-1212" ] ] ], "roles" : [ "dns", "noc" ], "links" : [ { "value" : "https://rdap.arin.net/registry/arin_originas0_networksbyoriginas/10745", "rel" : "self", "type" : "application/rdap+json", "href" : "https://rdap.arin.net/registry/entity/JEFFE114-ARIN" }, { "value" : "https://rdap.arin.net/registry/arin_originas0_networksbyoriginas/10745", "rel" : "alternate", "type" : "application/xml", "href" : "https://whois.arin.net/rest/poc/JEFFE114-ARIN" } ], "events" : [ { "eventAction" : "last changed", "eventDate" : "2021-04-20T11:43:41-04:00" }, { "eventAction" : "registration", "eventDate" : "2020-04-16T16:41:31-04:00" } ], "status" : [ "validated" ], "port43" : "whois.arin.net", "objectClassName" : "entity" }, { "handle" : "MJO282-ARIN", "vcardArray" : [ "vcard", [ [ "version", { }, "text", "4.0" ], [ "adr", { "label" : "PO Box 232290\nCentreville\nVA\n20120\nUnited States" }, "text", [ "", "", "", "", "", "", "" ] ], [ "fn", { }, "text", "Michael J O'Neill" ], [ "n", { }, "text", [ "O'Neill", "Michael", "J", "", "" ] ], [ "kind", { }, "text", "individual" ], [ "email", { }, "text", "mjo@arin.net" ], [ "tel", { "type" : [ "work", "voice" ] }, "text", "+1-703-555-1212" ] ] ], "roles" : [ "technical", "noc" ], "links" : [ { "value" : "https://rdap.arin.net/registry/arin_originas0_networksbyoriginas/10745", "rel" : "self", "type" : "application/rdap+json", "href" : "https://rdap.arin.net/registry/entity/MJO282-ARIN" }, { "value" : "https://rdap.arin.net/registry/arin_originas0_networksbyoriginas/10745", "rel" : "alternate", "type" : "application/xml", "href" : "https://whois.arin.net/rest/poc/MJO282-ARIN" } ], "events" : [ { "eventAction" : "last changed", "eventDate" : "2021-04-26T15:19:39-04:00" }, { "eventAction" : "registration", "eventDate" : "2012-09-19T14:33:35-04:00" } ], "status" : [ "validated" ], "port43" : "whois.arin.net", "objectClassName" : "entity" } ], "port43" : "whois.arin.net", "objectClassName" : "entity" } ], "port43" : "whois.arin.net", "status" : [ "active" ], "objectClassName" : "ip network", "cidr0_cidrs" : [ { "v6prefix" : "2001:500:4::", "length" : 48 } ], "arin_originas0_originautnums" : [ 10745 ] } ]}<rdap-url>/autnum/<asn> where <asn> is an ASN, without the AS prefix.
where the <handle> parameter represents the POC or Org ID/ Org Handle (e.g., KOSTE6-ARIN).
Querying for nameservers (as specified in RFC 0952 and RFC 1123) is supported by domain registries, but is not supported for ARIN’s registration data through RDAP.
For full details and specifications, please view the following IETF Internet Request for Comments (RFC) documents:
