Routing security
AS208854 ENTROPIA Entropia e.V. - Chaos Computer Club Karlsruhe
Unclassified RIPE Non-Profit
Announcements
What this network originates
Every prefix observed with AS208854 as its origin, checked against RPKI and the IRR. Problems sort first.
| Prefix | RPKI | IRR | Vantage points |
|---|---|---|---|
| 2a0e:c5c0::/32 | RPKI valid | IRR | 30 |
| 45.140.180.0/24 | RPKI valid | IRR | 52 |
| 45.140.182.0/24 | RPKI valid | IRR covering | 51 |
RPKI · ROAs
Route origin authorisations
Signed statements by address holders that AS208854 may originate these prefixes, up to the maximum length shown.
| Prefix | Max length | Trust anchor |
|---|---|---|
| 45.140.180.0/22 | /22 | RIPENCC |
| 45.140.180.0/24 | /24 | RIPENCC |
| 45.140.181.0/24 | /24 | RIPENCC |
| 45.140.182.0/24 | /24 | RIPENCC |
| 2a0e:c5c0::/29 | /29 | RIPENCC |
| 2a0e:c5c0::/32 | /32 | RIPENCC |
| 2a0e:c5c1::/48 | /48 | RIPENCC |
ROA-based and RPKI-valid-only prefix lists for routers are on asn.ipinfo.app.
RPKI · ASPA
Declared transit providers
This network has signed an ASPA record naming its transit providers. Each is compared against the upstreams observed in routing paths.
| AS | Network | ASPA | Routing paths |
|---|---|---|---|
| AS553 | Universitaet Stuttgart | Declared | not observed |
| AS204680 | Karlsruhe Institute of Technology | Declared | Observed |
An observed upstream that is not declared is not necessarily a leak: our upstream inference cannot tell a transit provider from a peer seen in the same position. A declared provider that is never observed is usually a backup path.
IRR
Registered route objects
Route objects naming AS208854 as origin, across RADb, the RIR registries, ALTDB and NTTCOM. Objects that are registered but not announced come first: a stale object lets anyone who can spoof this origin through an IRR-built filter.
| Prefix | Source | Description | Maintainer | Changed | Routing |
|---|---|---|---|---|---|
| 45.140.180.0/22 | RIPE | — | ENTROPIA-MNT | 2019-09-23 | Not announced |
| 45.140.181.0/24 | RIPE | — | ENTROPIA-MNT | 2019-09-23 | Not announced |
| 2a0e:c5c0::/29 | RIPE | — | ENTROPIA-MNT | 2019-09-23 | Not announced |
| 2a0e:c5c1::/48 | RIPE | — | ENTROPIA-MNT | 2025-05-09 | Not announced |
| 45.140.180.0/24 | RIPE | — | ENTROPIA-MNT | 2019-09-23 | Announced |
| 2a0e:c5c0::/32 | RIPE | — | ENTROPIA-MNT | 2019-09-23 | Announced |
IRR
AS-sets
The as-set is what upstreams expand to build this network's customer filter. Sets that list AS208854 directly show who expects to carry it.
| AS-set | Where | Relationship |
|---|---|---|
AS-ENTROPIA | PeeringDB | Declared by the operator as its own set |
AS-ENTROPIA | RIPE | Lists AS208854 as a direct member |
RPKI from rpki-client, validated 2026-10-25 14:10 UTC. IRR from ARIN, RADB, RIPE, ALTDB, APNIC, LACNIC, NTTCOM, AFRINIC, collected 2026-10-25. Cross-check on bgp.he.net.