AS12245 — PRMC-ASN

AS12245 announces 3 IPv4 prefixes covering 768 addresses and 0 IPv6 prefixes.

About this network

The network of a regional hospital on Maryland's Eastern Shore.

What it's used for

• Hospital and clinic connectivity. 768 addresses in three /24s with two observed BGP neighbours and no IPv6 announced.

Notable

• Three separate /24s out of 168.67.0.0: 168.67.1, 168.67.2 and 168.67.7. They are registered as PRMC to the medical center itself.
• Two neighbours rather than one. For a hospital, a second path is the difference between an outage and an inconvenience.
• Reverse DNS carries two different domains. One address answers as sl.peninsula.org, the hospital's own; another answers as mail.sleepwaves.net.

Interesting

• sleepwaves.net is the more informative of the two. A hospital's address space ends up hosting the specialty practices that operate inside it — a sleep medicine service here — each with its own name, its own mail server and its own branding, all sitting in the hospital's addresses. The organisational chart of a medical center is visible in its reverse DNS in a way it rarely is anywhere else.
• 168.67.0.0/16 is class-B-sized space, and what the hospital announces from inside it is three scattered /24s. The blocks it does hold are registered to it directly rather than to a provider, which for an institution of this size means somebody made the case for independent addresses and has kept them ever since.

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

Announced prefixes

• 168.67.1.0/24
• 168.67.2.0/24
• 168.67.7.0/24

Upstream networks

• AS46887 Crown Castle Fiber LLC
• AS33657 Comcast Cable Communications, LLC

Adjacent networks

• AS46887 Crown Castle Fiber LLC
• AS33657 Comcast Cable Communications, LLC

Routing security

• RPKI: 0 valid, 0 invalid and 3 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 3 route objects.
• Listed in as-sets: AS-CCF, AS-CCF-TEST, AS-COMCAST-EDIA, AS-WINDSTREAM-CUST.