Autonomous system
AS10561 BRANDEIS
Education ARIN
Summary
Brandeis University
education university research legacy
The campus ASN of Brandeis University, the private research university in Waltham, Massachusetts. The handle BRANDEIS matches the holder exactly.
What it's used for
A single-campus research university network. RIS sees 2 announced IPv4 prefixes carrying 65,536 addresses, no IPv6, and three observed neighbours. The whole footprint is 129.64.0.0/16, a full legacy Class B, with 129.64.249.0/24 announced as a more specific out of it.
Three neighbours against a /16 is a stub with redundancy, not a carrier. A university this size in the Boston area would typically reach the internet through a research-and-education network alongside commercial transit, which is exactly the small handful of upstreams the neighbour count reflects. There is no sign of any wholesale role.
Notable
The 65,536 addresses are a historical artefact, not a measure of scale. 129.64.0.0/16 was allocated when a university could be handed an entire Class B on request, and Brandeis has held it since. Its actual campus population is a fraction of that address count, and, as at every university, most of what runs on the network today sits behind NAT or in cloud services that are not in this space at all.
The lone /24 announced alongside the /16 is the routine pattern for splitting one subnet off across a different link, or for pinning a specific block against hijack. It carries no extra addresses of its own; it is a slice of the /16 advertised twice at different lengths.
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
Recorded at 1 exchange in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Boston Internet Exchange | Boston, United States | 206.108.236.94 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-13, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 8 prefixes · 65.54K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 8 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS10561- Registry name
- BRANDEIS
- Registrant
- Brandeis University
- Abuse contact
- noc@brandeis.edu
- Registered
- 1997-09-15
- Last changed
- 2020-09-15
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 2 with no ROA
- ROAs
- 1 authorising AS10561
- ASPA
- no ASPA record
- IRR
- 100% registered · 2 of 2 announcements
- Route objects
- 3 naming AS10561
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: 436 networks and 1,771 prefixes, as published 2026-10-13. 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