Autonomous system
AS4224 CALYX-AS
Education ARIN
Summary
The Calyx Institute
education research
The Calyx Institute is a New York-based 501(c)(3) research-and-education nonprofit focused on digital privacy, security, and connectivity.
What it's used for
- Networking for the institute's privacy research, education programs, and the free/open-source and connectivity services it maintains for members.
Notable
- An IP here belongs to a nonprofit research-and-education organization rather than a commercial host, and is classified
education/research.
Interesting
- Founded in 2010 by Nicholas Merrill, the institute develops CalyxOS, a privacy-focused Android operating system.
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 |
|---|---|---|
| New York International Internet Exchange | New York, United States | 198.32.160.97 |
Transit providers
1 upstream, 0 downstream and 2 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS6939 | Hurricane Electric LLC | 166 |
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 2 prefixes · 512 addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 3 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS4224- Registry name
- CALYX-AS
- Registrant
- The Calyx Institute
- Abuse contact
- abuse@calyxinstitute.org
- Registered
- 1995-01-09
- Last changed
- 2015-09-10
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 33% valid · 1 valid, 2 with no ROA
- ROAs
- 1 authorising AS4224
- ASPA
- no ASPA record
- IRR
- 67% registered · 2 of 3 announcements
- Route objects
- 2 naming AS4224
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: 440 networks and 1,773 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