Autonomous system
AS16649 IUPR-AS
Unclassified ARIN
Summary
Interamerican University of Puerto Rico
education research infrastructure
The handle and the netnames use the same four initials in a different order.
What it's used for
- A university's network. Two IPv4 prefixes announced from Puerto Rico, no IPv6, sixty-five thousand seven hundred and ninety-two addresses, through three observed BGP neighbours.
Notable
- The AS handle is four initials followed by the two letters for an autonomous system.
- Both netnames use those same four letters with the first two swapped, then the word for a network. One adds a single trailing letter.
- That trailing letter is the old address class marker for a block of sixty-five thousand addresses, which is exactly the size of the block carrying it.
- Both blocks are registered to the university itself, so both spellings are the institution's own.
- Six addresses were queried for reverse DNS and none returned a name.
Interesting
- Two orderings of one set of initials is what happens when a long name offers more than one obvious abbreviation and nobody arbitrates between them. Both are correct, and no field in the registry compares them.
- A class marker in a netname is a fossil from an era when block sizes came in three fixed shapes. The size it describes is still right, which is why nobody has had cause to change it.
- Sixty-five thousand addresses and a small block, behind three upstreams, is the ordinary shape of a campus network with an early allocation and a later one.
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 2026-10-11, 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 · 65.79K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| PR | Puerto Rico | 2 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS16649- Registry name
- IUPR-AS
- Registrant
- Interamerican University of Puerto Rico
- Abuse contact
- zaragoza@inter.edu
- Registered
- 2005-06-28
- Last changed
- 2012-02-24
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 2 with no ROA
- ROAs
- 0 authorising AS16649
- ASPA
- no ASPA record
- IRR
- 100% registered · 2 of 2 announcements
- Route objects
- 2 naming AS16649
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 1,768 prefixes, as published 2026-10-12. 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