AS21553 — ASP-MAIN

AS21553 announces 2 IPv4 prefixes covering 512 addresses and 0 IPv6 prefixes.

About this network

ASP-MAIN is the autonomous system for Aspirus, Inc., a healthcare provider operating hospitals and clinics in the United States.

What it's used for

• The address space carries internal corporate traffic, evidenced by the netname ASPIR-13 assigned to both announced prefixes.
• The AS announces 512 IPv4 addresses across 2 prefixes with 2 observed neighbours, a ratio consistent with a small, self-contained enterprise network rather than a transit or access provider.

Notable

• The registrant for both prefixes, Aspirus, Inc., matches the AS holder, confirming direct ownership of the address space.
• The inventory consists of two /24 blocks, 204.10.109.0/24 and 216.99.223.0/24, representing a modest footprint typical of a regional healthcare system's internal infrastructure.

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

Announced prefixes

• 204.10.109.0/24
• 216.99.223.0/24

Upstream networks

• AS40264 Charter Communications LLC
• AS10352 Solarus

Adjacent networks

• AS40264 Charter Communications LLC
• AS10352 Solarus

Routing security

• RPKI: 0 valid, 0 invalid and 2 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 2 route objects.
• Listed in as-sets: AS-10352CUSTOMERS, AS-CHTR-BB, AS-HURRICANE, AS-RR-SYNC, AS-TRANSROUTE-SPEC, AS-XO, AS-XO-B, AS11796:AS-CUSTOMERS, AS11796:AS-CUSTOMERS-ARIN.