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This is the LACNIC RDAP service. Objects are in RDAP format. https://www.lacnic.net/registration-data-access-protocol
Autonomous System AS21756 from AR-ASTE1-LACNIC
Registry · rdap.lacnic.net
Registry · rdap.lacnic.net
{
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"notices": [
{
"title": "Terms and Conditions",
"description": [
"This is the LACNIC RDAP service. Objects are in RDAP format."
],
"links": [
{
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"type": "text/html"
}
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],
"remarks": [
{
"description": [
"Autonomous System AS21756 from AR-ASTE1-LACNIC"
],
"title": "description"
}
],
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{
"value": "https://rdap.lacnic.net/rdap/autnum/AS21756",
"rel": "self",
"type": "application/rdap+json",
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"events": [
{
"eventAction": "registration",
"eventDate": "2001-06-15T12:00:00Z"
},
{
"eventAction": "last changed",
"eventDate": "2026-03-18T19:07:12Z"
}
],
"objectClassName": "autnum",
"handle": "AS21756",
"startAutnum": 21756,
"endAutnum": 21756,
"name": "21756",
"type": "DIRECT ALLOCATION",
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[
[
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[],
"text",
"4.0"
],
[
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[],
"text",
"SIDERCA S.A.I.C."
],
[
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[
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{
"label": "Piso 12\nDella Paolera\nBuenos Aires\n1001\nAR"
},
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[
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"Della Paolera",
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"",
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[
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{
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},
"text",
"+54 1159849432#0000"
]
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"events": [
{
"eventAction": "registration",
"eventDate": "2003-08-14T12:00:00Z"
},
{
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}
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}
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},
{
"objectClassName": "entity",
"handle": "MAM715",
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"technical",
"abuse"
],
"vcardArray": [
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[
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"text",
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],
[
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"text",
"Matias Marzullo"
],
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[
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{
"label": "dr simini\nCampana\nAR"
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"mmarzullo@tenaris.com"
],
[
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"language-tag",
"es"
]
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],
"events": [
{
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"eventDate": "2025-09-18T13:37:52Z"
},
{
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"eventDate": "2025-09-18T13:37:52Z"
}
],
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"type": "application/rdap+json",
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}
]
}
],
"lacnic_legalRepresentative": "Matias Marzullo",
"port43": "whois.lacnic.net"
}