Autonomous system
AS11078 BROWN
Education ARIN
Summary
Brown University
education university research legacy
BROWN is Brown University, the Ivy League research university in Providence, Rhode Island. This is one of the cases where the obvious reading is the correct one, and the evidence lines up on every axis: ARIN registrant, address space, and reverse DNS all say the same thing.
What it's used for
The campus network. AS11078 announces seven IPv4 prefixes totalling 65,792 addresses, and one IPv6 block, 2620:6e:6000::/48. Six of the seven v4 prefixes are pieces of 128.148.0.0/16 — a full legacy Class B — deaggregated into a /17, a /18, a /19, a /20 and two /21s, all registered in ARIN to BROWN-UNIV. The seventh, 192.91.235.0/24, is registered to BROWN-TEST.
That deaggregation pattern is characteristic of a university: a single historical block carved into contiguous pieces so that different parts of the estate — academic departments, residential halls, research groups, administration — can be routed and filtered separately. The sampled reverse DNS, cardamom.cs.brown.edu, drops straight into the computer science department, which is what campus space looks like from the outside: named hosts under a departmental subdomain rather than the numbered subscriber pools of an ISP.
Notable
Only one observed BGP neighbour despite 65k addresses. Address count and role are decoupled here — a university of this size is a large consumer of connectivity, not a seller of it. In New England, campuses typically reach the commodity internet and Internet2 through a regional research-and-education network rather than by building their own peering fabric, and a single visible upstream in RIS is consistent with that.
Interesting
128.148.0.0/16 is 65,536 addresses handed to one campus, an allocation from an era when address space was granted on institutional standing rather than demonstrated need. The BROWN-TEST /24 is the kind of small side-block a research university keeps for exactly what its name suggests.
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 2 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS14325 | OSHEAN, Inc. | 463 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-20, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 9 prefixes · 65.54K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 10 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS11078- Registry name
- BROWN
- Registrant
- Brown University
- Abuse contact
- noc@brown.edu
- Registered
- 1998-04-02
- Last changed
- 1999-11-29
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 8 with no ROA
- ROAs
- 0 authorising AS11078
- ASPA
- no ASPA record
- IRR
- 100% registered · 8 of 8 announcements
- Route objects
- 9 naming AS11078
Reputation
Classification and threat
Education University, school or national research and education network.
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 1,778 prefixes, as published 2026-10-20. 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