Routing security
AS39904 MERIT-AS MERIT GROUP a.s.
Unclassified RIPE
Announcements
What this network originates
Every prefix observed with AS39904 as its origin, checked against RPKI and the IRR. Problems sort first.
| Prefix | RPKI | IRR | Vantage points |
|---|---|---|---|
| 2a02:7a00::/32 | RPKI valid | IRR | 34 |
| 46.227.168.0/21 | RPKI valid | IRR | 53 |
| 91.215.12.0/22 | RPKI valid | IRR | 52 |
| 195.189.0.0/22 | RPKI valid | IRR | 52 |
RPKI · ROAs
Route origin authorisations
Signed statements by address holders that AS39904 may originate these prefixes, up to the maximum length shown.
| Prefix | Max length | Trust anchor |
|---|---|---|
| 46.227.168.0/21 | /32 | RIPENCC |
| 91.215.12.0/22 | /32 | RIPENCC |
| 195.189.0.0/22 | /32 | RIPENCC |
| 2a02:7a00::/32 | /128 | 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 |
|---|---|---|---|
| AS5588 | unnamed | Declared | not observed |
| AS6939 | Hurricane Electric LLC | Declared | Observed |
| AS16019 | Vodafone Czech Republic a.s. | Declared | Observed |
| AS42000 | Futruy s.r.o. | Declared | not observed |
| AS47200 | NIX.CZ z.s.p.o. | Declared | not observed |
| AS6855 | Slovak Telekom, a.s. | not declared | Observed |
| AS24482 | SG.GS | not declared | Observed |
| AS29504 | Freenet Liberec, z.s. | not declared | Observed |
| AS1764 | Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH | not declared | Observed |
| AS8218 | Zayo Infrastructure France SA | not 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 AS39904 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 |
|---|---|---|---|---|---|
| 46.227.168.0/21 | RIPE | MERIT-GROUP-AS39904 | MERIT-MNT | 2012-11-09 | Announced |
| 91.215.12.0/22 | RIPE | MERIT-GROUP-AS39904 | MERIT-MNT | 2011-01-24 | Announced |
| 195.189.0.0/22 | RIPE | MERIT-GROUP-AS39904 | MERIT-MNT | 2011-01-24 | Announced |
| 2a02:7a00::/32 | RIPE | MERIT-GROUP-AS39904 | MERIT-MNT | 2011-02-03 | Announced |
IRR
AS-sets
The as-set is what upstreams expand to build this network's customer filter. Sets that list AS39904 directly show who expects to carry it.
| AS-set | Where | Relationship |
|---|---|---|
AS-HURRICANEV6 | RADB | Lists AS39904 as a direct member |
AS-MERIT-NIX | RIPE | Lists AS39904 as a direct member |
AS-MERIT-UPSTREAM | RIPE | Lists AS39904 as a direct member |
AS8508:AS-SASK-UPC-IN | RIPE | Lists AS39904 as a direct member |
RPKI from rpki-client, validated 2026-10-13 12:16 UTC. IRR from ARIN, RADB, RIPE, ALTDB, APNIC, LACNIC, NTTCOM, AFRINIC, collected 2026-10-13. Cross-check on bgp.he.net.