Autonomous system
AS8323 CYFRONET-AS2 Metropolitan Area Network Autonomous System
Education RIPE Educational/Research
Summary
ACC Cyfronet AGH — Kraków MAN
education research legacy
CYFRONET-AS2 is the Academic Computer Centre Cyfronet AGH in Kraków, the computing centre of the AGH University of Science and Technology. This AS carries the Kraków metropolitan academic network (cyfro.net), which connects the city's universities, institutes and research facilities.
What it's used for
- The Kraków MAN: campus and institute connectivity for AGH and the other Kraków higher-education and research institutions, aggregated by Cyfronet and handed up to Poland's national research network.
- Large legacy academic blocks including
195.150.0.0/17,195.150.128.0/18and193.193.64.0/19, carved into assignments for member institutions. - Cyfronet is also a national supercomputing centre, so this network carries research computing traffic as well as ordinary campus access.
Notable
- Institutional address space. Roughly two dozen BGP neighbours sit behind and beside it, and reverse DNS in the range lands on member networks and regional organisations rather than on Cyfronet itself. An IP here usually identifies a Kraków institution connected through the MAN.
- Backbone interfaces carry
cyfro.netnaming, which is the honest marker of the operator's own infrastructure.
Interesting
- Cyfronet is one of the oldest computing centres in Poland and runs the country's best-known academic supercomputers. The metropolitan network and the HPC centre share the same organisation, which is why an "education" AS number this low is also a serious research-computing network.
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 |
|---|---|---|
| Equinix Internet Exchange Warsaw | Warsaw, Poland | 2001:7f8:42::2:4748:3 |
| NetIX | Sofia, Bulgaria | 2001:67c:29f0::5:7463:168 |
| Thinx IX | Warsaw, Poland | 212.91.0.213 |
Transit providers
4 upstream, 12 downstream and 22 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS13293 | Institute of Bioorganic Chemistry Polish Academy of Science, Poznan Supercomputing and Networking Center | 155 |
| AS196844 | Institute of Bioorganic Chemistry Polish Academy of Science, Poznan Supercomputing and Networking Center | 140 |
| AS6939 | Hurricane Electric LLC | 71 |
| AS24748 | Atman Sp. z o.o. | 2 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-10, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 16 prefixes · 50.94K addresses IPv6 16 prefixes
| Country | Name | Prefixes |
|---|---|---|
| PL | Poland | 32 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS8323- Registry name
- CYFRONET-AS2
- Registrant
- AS8323-MNT
- Abuse contact
- abuse@cyfronet.pl
- Registered
- 2001-10-29
- Last changed
- 2017-11-15
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- CYFRONET-AS2
- Also known as
- ACK CYFRONET AGH
- Network type
- Educational/Research
- Scope
- Not Disclosed
- Traffic ratio
- Not Disclosed
- Peering policy
- Open
- IRR as-set
AS-CYFRONET- Present at
- 1 exchanges
- Website
- http://www.cyfronet.pl
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
- 71% valid · 5 valid, 2 with no ROA
- ROAs
- 8 authorising AS8323
- ASPA
- no ASPA record
- IRR
- 100% registered · 7 of 7 announcements
- Route objects
- 10 naming AS8323
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: 431 networks and 1,775 prefixes, as published 2026-10-11. 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