Autonomous system
AS14478 RECURSE-CENTER
Unclassified ARIN
Summary
Recurse Center
education hosting
A programmers' retreat that runs its own routing, in both address families.
What it's used for
- A self-directed programming retreat's network. 256 IPv4 addresses in a single prefix alongside an IPv6
2602:fb65::/47, with two observed BGP neighbours.
Notable
- The IPv4 block is
23.136.216.0/24, carrying the netnameRECURSE-NET4and registered to the organisation. - That netname marks the address family in its final character.
- The IPv6 prefix is an unusual size, one step larger than the standard site allocation.
- Three addresses were queried for reverse DNS and none returned a name.
Interesting
- Almost nothing this small holds its own number, addresses in both families and two upstreams. For an organisation whose entire purpose is people learning how systems work, running the routing yourself is the point rather than an operational necessity.
- Announcing the odd-sized IPv6 prefix whole, rather than splitting it, keeps a single entry in everybody's routing table where two would fit, which is the neighbourly choice.
- Marking the family in the netname is the habit of an operator who expected a companion entry, and the IPv6 space here is announced without one.
- Nothing is published in the reverse DNS for the sampled addresses.
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.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-26, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 1 prefixes · 256 addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 2 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS14478- Registry name
- RECURSE-CENTER
- Registrant
- Recurse Center
- Abuse contact
- abuse@recurse.com
- Registered
- 2022-05-19
- Last changed
- 2022-05-19
- Allocation
- assigned
Declared
PeeringDB profile
- Name
- Recurse Center
- Scope
- Not Disclosed
- Traffic ratio
- Not Disclosed
- Peering policy
- Open
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.
Routing security
RPKI and IRR
- RPKI
- 100% valid · 3 valid, 0 with no ROA
- ROAs
- 3 authorising AS14478
- ASPA
- no ASPA record
- IRR
- 100% registered · 3 of 3 announcements
- Route objects
- 3 naming AS14478
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: 443 networks and 1,779 prefixes, as published 2026-10-24. 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