Autonomous system
AS20066 MSC-SJ-HQ - Supermicro Computer
Unclassified ARIN
Summary
Supermicro
business server manufacturing corporate
MSC-SJ-HQ is the autonomous system for Supermicro, a major server and storage hardware manufacturer.
What it's used for
- The address space carries corporate infrastructure, evidenced by reverse DNS entries like
66-120-31-64.supermicro.comandonsite-source.supermicro.com. - The AS announces 1280 IPv4 addresses across 5 prefixes with only 2 observed neighbours, indicating a small, internal corporate estate rather than a transit or access network.
Notable
- Registrants are mixed: two prefixes are registered to Comcast Cable Communications, LLC, while three are registered to variations of Super Micro Computer, Inc.
- The inventory consists of five /24 blocks, including two that appear to be leased or historically associated with Comcast, alongside three blocks directly registered to the company.
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 2026-11-02, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 5 prefixes · 1.28K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 5 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS20066- Registry name
- MSC-SJ-HQ
- Registrant
- Supermicro Computer
- Abuse contact
- robin.lo@supermicro.com
- Registered
- 2017-07-24
- Last changed
- 2017-07-24
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 40% valid · 2 valid, 3 with no ROA
- ROAs
- 2 authorising AS20066
- ASPA
- no ASPA record
- IRR
- 0% registered · 0 of 5 announcements
- Route objects
- 1 naming AS20066
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: 448 networks and 1,851 prefixes, as published 2026-11-03. 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