Autonomous system
AS13119 ACI-COM-AS
Unclassified RIPE
Summary
ACI Szczecin
education research isp
A university computing centre whose address space answers under two commercial domains.
What it's used for
- The academic computing centre of a Polish technical university. 9,984 addresses across 23 IPv4 prefixes, one IPv6 prefix, and 41 observed BGP neighbours.
Notable
- Netnames are mostly
PL-AMSK, dated980223,20010423and20050727. - One is
Tarniny_pl_Maciej_Prazucha, joining a domain and an individual's name with underscores. - Five of 18 sampled addresses returned names under
tarniny.plandstatic.dobrynet.eu, neither belonging to the university. - The IPv6 announcement is a
/30, larger than the standard allocation size. - Two prefixes could not be looked up in the registry; the fetches failed.
Interesting
- A netname built from a domain plus a person's name is the registry being used as a customer database. Whoever assigned that block wrote down who got it in the only field available, and it has been public ever since. The matching domain then turns up in the reverse zone, confirming the assignment years later.
- Twenty-three prefixes for under ten thousand addresses, most of them
/23s and/24s carved from three parent ranges, is space handed out per customer and announced per customer. - University computing centres in this period were the only organisations in many cities with transit, so they sold it. Forty-one neighbours is not an academic figure; it is a regional provider's.
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 3 exchanges in 2 countries, largest first.
| Exchange | Location | Their address |
|---|---|---|
| TPIX - Internet Exchange | Warsaw, Poland | 195.149.233.7 |
| NIX.CZ - Neutral Internet eXchange for the Czech Republic | Prague, Czech Republic | 91.210.16.136 |
| Thinx IX | Warsaw, Poland | 212.91.0.241 |
Transit providers
10 upstream, 12 downstream and 29 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS196844 | Institute of Bioorganic Chemistry Polish Academy of Science, Poznan Supercomputing and Networking Center | 388 |
| AS13293 | Institute of Bioorganic Chemistry Polish Academy of Science, Poznan Supercomputing and Networking Center | 262 |
| AS174 | Cogent Communications, LLC | 192 |
| AS9002 | RETN Limited | 146 |
| AS20804 | Exatel S.A. | 34 |
| AS24482 | SG.GS | 18 |
| AS5617 | Orange Polska Spolka Akcyjna | 17 |
| AS29504 | Freenet Liberec, z.s. | 17 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-14, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 24 prefixes · 10.50K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| PL | Poland | 25 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS13119- Registry name
- ACI-COM-AS
- Registrant
- ACI-MNT-POLAND
- Abuse contact
- abuse@man.szczecin.pl
- Registered
- 2002-07-08
- Last changed
- 2017-11-15
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 20 valid, 0 with no ROA
- ROAs
- 5 authorising AS13119
- ASPA
- no ASPA record
- IRR
- 100% registered · 20 of 20 announcements
- Route objects
- 22 naming AS13119
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: 442 networks and 1,771 prefixes, as published 2026-10-15. 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