Autonomous system
AS11164 INTERNET2-I2PX
Education ARIN Educational/Research
Summary
Internet2 (I2PX)
research education transit legacy
INTERNET2-I2PX is the peering AS of Internet2, the US national research-and-education backbone. I2PX (the Internet2 Peer Exchange, the successor to what was long called TransitRail/CPS) is the AS Internet2 uses to hold commercial peering sessions with content and cloud providers and hand those routes on to its member universities, labs and regional networks.
What it's used for
Backbone plumbing and route exchange, not end-user address space. RIS sees 7 IPv4 prefixes / 2,048 addresses and 7 IPv6 prefixes, against 95 observed neighbours. That ratio is the whole story: a network with only a couple of thousand addresses that nonetheless talks BGP with ~95 other autonomous systems is doing exchange work, not serving customers on those addresses. The addresses themselves are router infrastructure.
Notable
The reverse DNS confirms it directly. Sampled PTRs land on names like lo-7.core1.ashb.net.internet2.edu, core1.seat, core1.losa and core2.newy32aoa — loopbacks and core-router interfaces in Ashburn, Seattle, Los Angeles and 32 Avenue of the Americas in New York, all under Internet2's own domain. Every announced prefix is registered to Internet2 (INTERNET2, I2-NEWNET), so holder, registrant and rDNS all agree.
Interesting
Internet2's main backbone rides a different AS number; this one exists so that commercial peering can be kept on a separate policy boundary from R&E transit, which is why the address footprint is tiny and the neighbour count is not.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Address space
Summary
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 7 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS11164- Registry name
- INTERNET2-I2PX
- Registrant
- Internet2
- Abuse contact
- abuse@net.internet2.edu
- Registered
- 2014-07-11
- Last changed
- 2020-04-27
- Status
- active
Declared
PeeringDB profile
- Name
- Internet2 I2PX
- Also known as
- Internet2 TransitRail / TR-CPS
- Network type
- Educational/Research
- Scope
- North America
- Traffic ratio
- Mostly Inbound
- Peering policy
- Selective
- IRR as-set
RADB::AS11164:AS-ALL- Present at
- 12 exchanges
- Facilities
- 10 facilities
- Website
- https://www.internet2.edu/
PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.
Reputation
Classification and threat
Education University, school or national research and education network.
No IC3 indicators Nothing from the FBI IC3 feed.
Threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere