Autonomous system
AS13429 MUSC
Unclassified ARIN
Summary
Medical University of South Carolina
education research enterprise
One /16 announced as six routes that add up to exactly one /16, to a single upstream.
What it's used for
- A United States medical university and hospital network. 65,536 addresses across six IPv4 prefixes, one observed BGP neighbour, and no IPv6 announced.
Notable
- The six prefixes are a /17, a /18, a /19, a /20 and two /21s, all inside
128.23.0.0. - Their sizes sum to exactly the /16 that contains them.
- All six carry the netname
MUSC; five registrant strings omit the wordofthat the sixth includes. - All eighteen sampled addresses answered, as
128-23-160-0.musc.eduin form.
Interesting
- Splitting a block into announcements of doubling size is what a tool produces when it covers a range with aligned pieces. Here the range is the whole allocation, so the six routes carry no information the one route would not have carried.
- With a single upstream there is nothing to steer. Deaggregation exists so traffic can prefer different paths, and with one path the six announcements do nothing except occupy six slots in every routing table that accepts them.
- Five records missing a word the sixth has is the same name typed six times. The /17 was registered separately, and whoever filled it in wrote the institution's name in full.
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.
Transit providers
1 upstream, 0 downstream and 1 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS2721 | CULR, LLC | 310 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-24, 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 · 65.54K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 6 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS13429- Registry name
- MUSC
- Registrant
- Medical University of South Carolina
- Abuse contact
- nst@musc.edu
- Registered
- 1999-06-03
- Last changed
- 2012-03-02
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 5 with no ROA
- ROAs
- 0 authorising AS13429
- ASPA
- no ASPA record
- IRR
- 100% registered · 5 of 5 announcements
- Route objects
- 6 naming AS13429
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: 443 networks and 1,779 prefixes, as published 2026-10-25. 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