Autonomous system
AS33723 LENNAR
Unclassified ARIN
Summary
Lennar Corporation
business corporate internal us
LENNAR is the autonomous system for Lennar Corporation, a major American homebuilder.
What it's used for
- The address space carries internal corporate infrastructure, evidenced by the reverse DNS record
ra.lennar.comand netnames consistently labeledLENNAR. - The AS announces 1536 IPv4 addresses across 2 prefixes with only 2 observed neighbours, indicating a small, self-contained internal network rather than a transit or access provider.
Notable
- Registrants for both announced prefixes are Lennar Corporation, matching the AS holder and confirming direct ownership of the address space.
- The inventory consists of two contiguous IPv4 blocks: 204.109.16.0/22 and 204.109.20.0/23, with no IPv6 prefixes announced.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-21, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 2 prefixes · 1.54K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 2 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS33723- Registry name
- LENNAR
- Registrant
- Lennar Corporation
- Abuse contact
- abuse@lennar.com
- Registered
- 2015-11-06
- Last changed
- 2015-11-06
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 3 with no ROA
- ROAs
- 0 authorising AS33723
- ASPA
- no ASPA record
- IRR
- 100% registered · 3 of 3 announcements
- Route objects
- 2 naming AS33723
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 442 networks and 1,779 prefixes, as published 2026-10-22. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere