Free network tools
AS WHOIS
Look up an Autonomous System — holder, registry, contacts, announced IPv4/IPv6 prefixes, upstreams and downstreams.
Network Report (All-in-one) BGP Looking Glass BGP Security Check RPKI Validator BGP Hijack & Leak Monitor ASN Intelligence Internet Outages & Anomalies Country Internet Report Domain Insights IP WHOIS AS WHOIS
AS33723
LENNAR - Lennar Corporation Announcing routesAS nameLENNAR
OrganisationLennar Corporation
Registry (RIR)ARIN
HandleAS33723
RangeAS33723
Registered06 Nov 2015
Last changed06 Nov 2015
Abuse contact[email protected]
3IPv4 prefixes
0IPv6 prefixes
2Upstreams
0Downstreams
Upstreams
| AS | Network name | Visibility |
|---|---|---|
| AS27330 | EQUINIX-EC-AT - Equinix, Inc. | 260 |
| AS23005 | SWITCH-LTD - SWITCH, LTD | 256 |
Downstreams
None seen.
IPv4 prefixes (3)
RPKI-validate all prefixes of AS33723
Contacts
| Role | Name | Handle | Email / phone | Address |
|---|---|---|---|---|
| registrant | Lennar Corporation | LC-377 | 5505 Blue Lagoon Dr, Miami, FL, 33126, United States | |
| administrative | Joshua Marlin | MARLI10-ARIN | [email protected], [email protected], +1-305-485-3807, +1-305-764-4048, +1-305-764-4048 | 700 NW 107th Ave Suite 115, Miami, FL, 33172, United States |
| abuse | Abuse | ABUSE5650-ARIN | [email protected], +1-800-570-1850 | 5505 Blue Lagoon Dr, Miami, FL, 33126, United States |
| technical | IT Network Services | INS21-ARIN | [email protected], +1-305-387-6340 | 5505 Waterford District Drive, Miami, FL, 33126, United States |
Raw registry response
{
"endAutnum": 33723,
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2021-11-24T15:12:54-05:00"
},
{
"eventAction": "registration",
"eventDate": "2016-09-19T15:36:54-04:00"
}
],
"handle": "MARLI10-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/MARLI10-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/33723"
},
{
"href": "https://whois.arin.net/rest/poc/MARLI10-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/33723"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"ARIN has attempted to validate the data for this POC, but has received no response from the POC since 2022-11-24"
],
"title": "Unvalidated POC"
}
],
"roles": [
"administrative"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "700 NW 107th Ave Suite 115\nMiami\nFL\n33172\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Joshua Marlin"
],
[
"n",
[],
"text",
[
"Marlin",
"Joshua",
"",
"",
""
]
],
[
"kind",
[],
"text",
"individual"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-305-485-3807"
],
[
"tel",
{
"type": [
"work",
"cell"
]
},
"text",
"+1-305-764-4048"
],
[
"tel",
{
"type": [
"work",
"fax"
]
},
"text",
"+1-305-764-4048"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2024-01-23T14:02:36-05:00"
},
{
"eventAction": "registration",
"eventDate": "2016-09-19T15:58:30-04:00"
}
],
"handle": "ABUSE5650-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/ABUSE5650-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/33723"
},
{
"href": "https://whois.arin.net/rest/poc/ABUSE5650-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/33723"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"ARIN has attempted to validate the data for this POC, but has received no response from the POC since 2025-01-22"
],
"title": "Unvalidated POC"
}
],
"roles": [
"abuse"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "5505 Blue Lagoon Dr\nMiami\nFL\n33126\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Abuse"
],
[
"org",
[],
"text",
"Lennar"
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-800-570-1850"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-10-17T10:48:12-04:00"
},
{
"eventAction": "registration",
"eventDate": "2016-09-12T11:27:19-04:00"
}
],
"handle": "INS21-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/INS21-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/33723"
},
{
"href": "https://whois.arin.net/rest/poc/INS21-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/33723"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "5505 Waterford District Drive\nMiami\nFL\n33126\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"IT Network Services"
],
[
"org",
[],
"text",
"Lennar"
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-305-387-6340"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2022-09-22T14:31:47-04:00"
},
{
"eventAction": "registration",
"eventDate": "2015-10-09T11:55:49-04:00"
}
],
"handle": "LC-377",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/LC-377",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/33723"
},
{
"href": "https://whois.arin.net/rest/org/LC-377",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/33723"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"Lennar Corporation"
],
[
"adr",
{
"label": "5505 Blue Lagoon Dr\nMiami\nFL\n33126\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
[],
"text",
"org"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2015-11-06T12:51:27-05:00"
},
{
"eventAction": "registration",
"eventDate": "2015-11-06T12:51:27-05:00"
}
],
"handle": "AS33723",
"links": [
{
"href": "https://rdap.arin.net/registry/autnum/33723",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/33723"
},
{
"href": "https://whois.arin.net/rest/asn/AS33723",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/33723"
}
],
"name": "LENNAR",
"notices": [
{
"description": [
"By using the ARIN RDAP/Whois service, you are agreeing to the RDAP/Whois Terms of Use"
],
"links": [
{
"href": "https://www.arin.net/resources/registry/whois/tou/",
"rel": "terms-of-service",
"type": "text/html",
"value": "https://rdap.arin.net/registry/autnum/33723"
}
],
"title": "Terms of Service"
},
{
"description": [
"If you see inaccuracies in the results, please visit: "
],
"links": [
{
"href": "https://www.arin.net/resources/registry/whois/inaccuracy_reporting/",
"rel": "inaccuracy-report",
"type": "text/html",
"value": "https://rdap.arin.net/registry/autnum/33723"
}
],
"title": "Whois Inaccuracy Reporting"
},
{
"description": [
"Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
],
"title": "Copyright Notice"
}
],
"objectClassName": "autnum",
"port43": "whois.arin.net",
"rdapConformance": [
"nro_rdap_profile_0",
"rdap_level_0",
"nro_rdap_profile_asn_flat_0"
],
"startAutnum": 33723,
"status": [
"active"
]
}Results come from public internet registries and live global routing data. Results are cached for up to an hour. Lookups are logged with your IP address to prevent abuse — see our Privacy Policy.