AS3565 — PRISMA-HEALTH - Prisma Health

AS3565 announces 5 IPv4 prefixes covering 3,840 addresses and 0 IPv6 prefixes.

About this network

PRISMA-HEALTH, the network of Prisma Health, a large not-for-profit health system operating hospitals and clinics across South Carolina.

What it's used for

• Enterprise networking for a hospital system: clinical systems, electronic health records, imaging, campus connectivity across its hospitals and outpatient sites, and administrative IT.

Notable

• Enterprise address space (about 3,840 IPv4 addresses) serving an institution's own staff and facilities, not internet subscribers.
• Healthcare networks of this size run under strict regulatory constraints, so the space is largely internal and tightly controlled rather than public-facing.

Interesting

• The ARIN record predates the Prisma Health name by decades; the registration goes back to 1994 and the handle was updated as the health system was renamed. Another reminder that a handle describes whoever holds it now.

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

Announced prefixes

• 199.15.144.0/22
• 199.15.148.0/23
• 199.15.150.0/24
• 208.68.220.0/22
• 209.149.112.0/22

Upstream networks

• AS3356 Level 3 Parent, LLC
• AS20115 Charter Communications LLC
• AS7018 AT&T Enterprises, LLC

Adjacent networks

• AS3356 Level 3 Parent, LLC
• AS20115 Charter Communications LLC
• AS7018 AT&T Enterprises, LLC

Routing security

• RPKI: 4 valid, 0 invalid and 12 not-found announcements; 5 ROAs.
• ASPA: none published.
• IRR: 50% of announcements registered; 13 route objects.
• Listed in as-sets: AS-13986, AS-18474, AS-C-LIGHT-SCLR-TRANSIT, AS-CHTR-BB, AS-HURRICANE, AS-RR-SYNC, AS-WINDSTREAM-CUST, AS-XO-B, AS2711:AS-CUSTOMERS, AS27563:AS-ALL.