Routing security
AS204141 K-NET K-Net Forening
Unclassified RIPE Non-Profit
Announcements
What this network originates
Every prefix observed with AS204141 as its origin, checked against RPKI and the IRR. Problems sort first.
| Prefix | RPKI | IRR | Vantage points |
|---|---|---|---|
| 2a03:19c0::/32 | RPKI valid | IRR | 34 |
| 82.211.192.0/19 | RPKI valid | IRR | 52 |
| 185.140.0.0/22 | RPKI valid | IRR | 52 |
RPKI · ROAs
Route origin authorisations
Signed statements by address holders that AS204141 may originate these prefixes, up to the maximum length shown.
| Prefix | Max length | Trust anchor |
|---|---|---|
| 82.211.192.0/19 | /19 | RIPENCC |
| 185.140.0.0/22 | /22 | RIPENCC |
| 2a03:19c0::/32 | /32 | 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 |
|---|---|---|---|
| AS42541 | Fiberby ApS | 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 AS204141 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 |
|---|---|---|---|---|---|
| 82.211.192.0/19 | RIPE | K-Net | K-NET-MNT | 2015-08-17 | Announced |
| 185.140.0.0/22 | RIPE | K-Net | K-NET-MNT | 2022-12-01 | Announced |
| 2a03:19c0::/32 | RIPE | DK-K-NET | K-NET-MNT | 2015-09-02 | Announced |
IRR
AS-sets
The as-set is what upstreams expand to build this network's customer filter. Sets that list AS204141 directly show who expects to carry it.
| AS-set | Where | Relationship |
|---|---|---|
AS204141:AS-KNETDK | PeeringDB | Declared by the operator as its own set |
AS-HURRICANEV6 | RADB | Lists AS204141 as a direct member |
AS-ZENSYSTEMS | RIPE | Lists AS204141 as a direct member |
AS204141:AS-KNETDK | RIPE | Lists AS204141 as a direct member |
AS31027:AS-GCNET-LEGACY | RIPE | Lists AS204141 as a direct member |
AS31027:AS-NIANET | RIPE | Lists AS204141 as a direct member |
RPKI from rpki-client, validated 2026-11-05 13:06 UTC. IRR from ARIN, RADB, RIPE, ALTDB, APNIC, LACNIC, NTTCOM, AFRINIC, collected 2026-11-05. Cross-check on bgp.he.net.