Autonomous system
AS40154 VRC-AS
Unclassified APNIC
Summary
Virtual Radiologic Corporation
business teleradiology healthcare
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, andTWTC-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. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-21, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 6 prefixes · 3.07K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 6 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS40154- Registry name
- VRC-AS
- Registrant
- Virtual Radiologic Corporation
- Abuse contact
- networkinfrastructure@vrad.com
- Registered
- 2006-08-02
- Last changed
- 2012-03-02
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 12 with no ROA
- ROAs
- 0 authorising AS40154
- ASPA
- no ASPA record
- IRR
- 100% registered · 12 of 12 announcements
- Route objects
- 14 naming AS40154
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 442 networks and 1,779 prefixes, as published 2026-10-22. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere