AS40154 — VRC-AS

AS40154 announces 6 IPv4 prefixes covering 3,072 addresses and 0 IPv6 prefixes.

About this network

VRC-AS is held by Virtual Radiologic Corporation.

What it's used for

• The address space carries corporate infrastructure for a teleradiology provider, evidenced by netnames such as PHXBGP, NRS-CHI-NET-01, and TWTC-VIRTUA-01.
• The AS announces 3,072 IPv4 addresses across 6 prefixes with 4 observed neighbours, indicating a small-scale internal corporate estate rather than a transit or access network.
• Traffic from this AS consists of internal corporate communications and data transfer for medical imaging services, supporting the company's remote diagnostic image interpretation operations.

Notable

• Registrants are consistent with the announcer, listing Virtual Radiologic Corporation, Virtual Radiologic Consultants, and VIRTUAL RADIOLOGIC CORP, alongside two prefixes registered to Level 3 Parent, LLC.
• Virtual Radiologic Corporation was acquired by MEDNAX, Inc. for $500 million.
• The inventory includes two /22 blocks and four /24 blocks, with no IPv6 prefixes announced.

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

Announced prefixes

• 66.162.56.0/24
• 74.117.32.0/22
• 204.16.164.0/22
• 207.250.202.0/24
• 208.50.249.0/24
• 209.180.24.0/24

Upstream networks

• AS3356 Level 3 Parent, LLC
• AS46887 Crown Castle Fiber LLC
• AS174 Cogent Communications, LLC
• AS13367 Comcast Cable Communications, LLC

Adjacent networks

• AS3356 Level 3 Parent, LLC
• AS46887 Crown Castle Fiber LLC
• AS174 Cogent Communications, LLC
• AS13367 Comcast Cable Communications, LLC

Routing security

• RPKI: 0 valid, 0 invalid and 12 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 14 route objects.
• Listed in as-sets: AS-CCF, AS-CCF-TEST, AS-COMCAST-EDIA, AS-GBLX.