AS11523 — AS-HLEEM - H. Lee Moffitt Cancer Center & Research Institute, Inc.

AS11523 announces 1 IPv4 prefixes covering 1,024 addresses and 0 IPv6 prefixes.

About this network

AS-HLEEM is the H. Lee Moffitt Cancer Center & Research Institute in Tampa, Florida — a nonprofit cancer hospital and NCI-designated comprehensive cancer centre. The AS carries the institute's own campus network.

What it's used for

• Clinical and research connectivity for a single institution: patient-facing systems, the hospital's public services, authoritative DNS, and research data platforms.
• RIS sees 5 announced IPv4 prefixes totalling 1,024 addresses, no IPv6, and 2 observed BGP neighbours. The five prefixes are one 206.81.164.0/22 plus its four component /24s, all registered to Moffitt under A-MOFFITT-US. So the real inventory is a single /22 announced alongside its more-specifics, which is standard practice to keep the covering route while steering the pieces. It is not a sprawling multi-block inventory.

Notable

• Reverse DNS is the clearest evidence of what the space actually carries, and it is unusually informative here. Sampled addresses answer as ns5.moffitt.org and ns2.moffitt.org (the institute's own nameservers), patientreg2.moffitt.org (patient registration), and radiosensitivity.hlmcc.org — a research host named for a radiation-oncology concept. Clinical services and research hosts share the same /22.
• Two BGP neighbours confirms the role: a hospital multihoming to a pair of upstreams for redundancy, with nothing sold onward.

Interesting

• One address resolves to data.m2gen.com. M2Gen was the health-informatics company spun out of Moffitt to commercialise its clinical and molecular data work (it later rebranded as Aster Insights). A spinout still sitting inside its parent's address space is a nice example of why registrant and rDNS can name different entities without anything being wrong: the space is Moffitt's, and the names on it trace real institutional history.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 206.81.164.0/22

Upstream networks

• AS3356 Level 3 Parent, LLC
• AS11096 FloridaNet

Adjacent networks

• AS3356 Level 3 Parent, LLC
• AS11096 FloridaNet

Routing security

• RPKI: 0 valid, 0 invalid and 5 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 5 route objects.
• Listed in as-sets: AS-FLRNET-AGGREGATE, AS-FLRNET-CONNECTORS, AS-FLRNET-CONNECTORS, AS-FLRNET-MEMBERS, AS-HURRICANE, AS-TRANSROUTE-SPEC, AS-ZENEDGE, AS11096:AS-FLRNET-MEMBERS.