Routing security
AS219251 Walther - Tomasz Walter
Unclassified RIPE
Announcements
What this network originates
Every prefix observed with AS219251 as its origin, checked against RPKI and the IRR. Problems sort first.
| Prefix | RPKI | IRR | Vantage points |
|---|---|---|---|
| 2a0b:4e07:260::/44 | RPKI valid | IRR | 34 |
| 2a06:9801:7df::/48 | RPKI valid | IRR | 34 |
RPKI · ROAs
Route origin authorisations
Signed statements by address holders that AS219251 may originate these prefixes, up to the maximum length shown.
| Prefix | Max length | Trust anchor |
|---|---|---|
| 2a06:9801:7df::/48 | /48 | RIPENCC |
| 2a0b:4e07:260::/44 | /44 | 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 |
|---|---|---|---|
| AS41051 | Openfactory GmbH | Declared | not observed |
| AS209533 | iFog GmbH | Declared | Observed |
| AS209735 | Lagrange Cloud Technologies Limited | Declared | Observed |
| AS212895 | Johannes Ernst | Declared | not observed |
| AS214762 | Sebastian Stefanek trading as MatHost.eu | Declared | Observed |
| AS214757 | Jakub Krsa | 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 AS219251 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 |
|---|---|---|---|---|---|
| 2a0e:b107:1370::/44 | RIPE | — | SOFTVI-MNT | 2026-07-08 | Not announced |
| 2a06:9801:7df::/48 | RIPE | 2a06:9801:7df::/48 | LAGRANGE-AUTO-MNT | 2026-07-08 | Announced |
| 2a0b:4e07:260::/44 | RIPE | — | HOP179-MNT | 2026-07-21 | Announced |
IRR
AS-sets
The as-set is what upstreams expand to build this network's customer filter. Sets that list AS219251 directly show who expects to carry it.
| AS-set | Where | Relationship |
|---|---|---|
AS-HURRICANEV6 | RADB | Lists AS219251 as a direct member |
AS-RETN-ACTUAL-V6 | RIPE | Lists AS219251 as a direct member |
AS-VM-JE-CUS | RIPE | Lists AS219251 as a direct member |
AS209533:AS-BGPTUNNEL | RIPE | Lists AS219251 as a direct member |
AS209735:AS-LAGRANGE-MAN | RIPE | Lists AS219251 as a direct member |
AS214757:AS-DOWNSTREAMS-AMSTERDAM | RIPE | Lists AS219251 as a direct member |
AS214762:AS-MH | RIPE | Lists AS219251 as a direct member |
AS52025:AS-DOWNSTREAMS-AMSTERDAM | RIPE | Lists AS219251 as a direct member |
AS52025:AS-DOWNSTREAMS-ASHBURN | RIPE | Lists AS219251 as a direct member |
AS52025:AS-DOWNSTREAMS-AUCKLAND | RIPE | Lists AS219251 as a direct member |
AS52025:AS-DOWNSTREAMS-FRANKFURT | RIPE | Lists AS219251 as a direct member |
AS52025:AS-DOWNSTREAMS-FREMONT | RIPE | Lists AS219251 as a direct member |
AS52025:AS-DOWNSTREAMS-KANSASCITY | RIPE | Lists AS219251 as a direct member |
AS52025:AS-DOWNSTREAMS-NEWARK | RIPE | Lists AS219251 as a direct member |
AS52025:AS-DOWNSTREAMS-SINGAPORE | RIPE | Lists AS219251 as a direct member |
AS52025:AS-DOWNSTREAMS-STOCKHOLM | RIPE | Lists AS219251 as a direct member |
AS52025:AS-DOWNSTREAMS-SYDNEY | RIPE | Lists AS219251 as a direct member |
AS52025:AS-DOWNSTREAMS-TORONTO | RIPE | Lists AS219251 as a direct member |
RPKI from rpki-client, validated 2026-10-16 12:09 UTC. IRR from ARIN, RADB, RIPE, ALTDB, APNIC, LACNIC, NTTCOM, AFRINIC, collected 2026-10-16. Cross-check on bgp.he.net.