Autonomous system
AS15336 CONCOR-1 - Concordia University, St. Paul
Unclassified ARIN
Summary
Concordia University, St. Paul
education business infrastructure
Three upstreams for a single /24, first announced in 2010.
What it's used for
- A university network. A single IPv4
/24announced from the United States, no IPv6, and three observed BGP neighbours.
Notable
- Three upstreams for two hundred and fifty-six addresses is more redundancy than most blocks this size carry.
- Routing history for this number begins in 2010, the latest start of any network in this part of the range.
- The netname is an abbreviation for network block followed by the institution's three initials.
- The AS handle truncates the university name to six letters and adds a counter.
- Three addresses were queried for reverse DNS and none returned a name.
Interesting
- A late start with a small block and several upstreams is the modern shape of an institutional network. Addresses were scarce by then, so the space is minimal and the resilience comes from routing rather than size.
- Truncating a name to six letters is a habit inherited from registry fields that once had length limits. The limit is gone; the style persists.
- One
/24for a university means almost everything on campus sits behind shared addressing, with only the public services holding addresses of their own.
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 2026-11-04, 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 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 1 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS15336- Registry name
- CONCOR-1
- Registrant
- Concordia University, St. Paul
- Abuse contact
- breitbarth@csp.edu
- Registered
- 2005-08-10
- Last changed
- 2014-08-29
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 1 with no ROA
- ROAs
- 0 authorising AS15336
- ASPA
- no ASPA record
- IRR
- 100% registered · 1 of 1 announcements
- Route objects
- 1 naming AS15336
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: 452 networks and 1,853 prefixes, as published 2026-11-05. 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