Autonomous system
AS11537 INTERNET2-RESEARCH-EDU
Unclassified ARIN
Summary
Internet2
research education transit legacy
INTERNET2-RESEARCH-EDU is Internet2, the member-owned consortium that runs the United States' national research and education backbone. RIS sees no announced prefixes at all — v4 or v6 — but 119 observed BGP neighbours.
What it's used for
Backbone transit and peering for research and education. The zero-prefix, high-neighbour shape is not a dormant network; it is the signature of a pure transit AS. Internet2 originates essentially nothing of its own into the global table because the address space belongs to its connectors: the regional R&E networks, universities, national laboratories and museums that attach to it. Their prefixes are announced from their own AS numbers, and AS11537 appears in the middle of the path rather than at its end. Neighbour count is the honest role signal here, and 119 of them against zero addresses says carrier, not end-site.
Notable
Because the AS carries no addresses, there is nothing in it to geolocate — any IP-level classification of Internet2 belongs to the connector networks behind it, not to this number.
Interesting
Internet2 is where a large amount of production research traffic actually moves: bulk data transfer between campuses, instrument and observatory feeds, and the interconnects that reach peer national networks abroad. It is also a long-standing testbed for network technology that later shows up in commercial carriers, which is why an AS that announces nothing is one of the most-peered numbers in this range.
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 |
|---|---|---|
| Seattle Internet Exchange | Seattle, United States | 206.81.80.67 |
Transit providers
6 upstream, 122 downstream and 221 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-10, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 31 prefixes · 7.99K addresses IPv6 6 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 37 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS11537- Registry name
- INTERNET2-RESEARCH-EDU
- Registrant
- Internet2
- Abuse contact
- abuse@net.internet2.edu
- Registered
- 1998-09-23
- Last changed
- 2020-04-27
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 77% valid · 33 valid, 0 with no ROA 10 RPKI-invalid
- ROAs
- 74 authorising AS11537
- ASPA
- no ASPA record
- IRR
- 88% registered · 38 of 43 announcements 2 other origin
- Route objects
- 63 naming AS11537
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: 431 networks and 1,775 prefixes, as published 2026-10-11. 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