asn.dev

Routing security

AS52091 LEVEL-MSK-AS Level-MSK Ltd.

Unclassified RIPE NSP

RPKI valid 100% 4 of 4 announcements
RPKI invalid 0 none
No ROA 0 not covered by any ROA
IRR registered 100% 0 missing · 0 other origin
ROAs 5 authorising this AS

Announcements

What this network originates

4 observed

Every prefix observed with AS52091 as its origin, checked against RPKI and the IRR. Problems sort first.

PrefixRPKIIRRVantage points
2a0d:df80::/31RPKI validIRR32
31.133.40.0/23RPKI validIRR54
31.133.40.0/24RPKI validIRR54
31.133.42.0/24RPKI validIRR54

RPKI · ROAs

Route origin authorisations

5 ROAs

Signed statements by address holders that AS52091 may originate these prefixes, up to the maximum length shown.

PrefixMax lengthTrust anchor
31.133.40.0/23/24RIPENCC
31.133.42.0/24/24RIPENCC
2a0d:df80::/29/29RIPENCC
2a0d:df80::/31/31RIPENCC
2a0d:df80::/48/48RIPENCC

ROA-based and RPKI-valid-only prefix lists for routers are on asn.ipinfo.app.

RPKI · ASPA

Declared transit providers

5 declared

This network has signed an ASPA record naming its transit providers. Each is compared against the upstreams observed in routing paths.

ASNetworkASPARouting paths
AS1299Arelion Sweden ABDeclaredObserved
AS3216PJSC "Vimpelcom"Declarednot observed
AS9002RETN LimitedDeclaredObserved
AS13094JSC "ER-Telecom Holding"Declarednot observed
AS20485Joint Stock Company TransTeleComDeclarednot observed
AS20764CJSC RASCOMnot declaredObserved
AS6939Hurricane Electric LLCnot declaredObserved
AS57304JSC "RetnNet"not declaredObserved
AS50509Transroute Telecom LTDnot declaredObserved
AS25478iHome LLCnot declaredObserved
AS35598INETCOM CARRIER LLCnot declaredObserved
AS24482SG.GSnot declaredObserved
AS37721Virtual Technologies & Solutionsnot declaredObserved
AS56655Gigahost ASnot declaredObserved
AS208972GIBIRNET ILETISIM HIZMETLERI SANAYI VE TICARET LIMITED SIRKETInot declaredObserved
AS49673Truenetwork LLCnot declaredObserved
AS50384iHome LLCnot declaredObserved
AS50673Serverius Holding B.V.not declaredObserved

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

6 objects · 2 not announced

Route objects naming AS52091 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.

PrefixSourceDescriptionMaintainerChangedRouting
31.133.41.0/24RIPE—LEVEL-MSK-MNT2022-08-05Not announced
2a0d:df80::/48RIPE—LEVEL-MSK-MNT2021-03-27Not announced
31.133.40.0/23RIPE—LEVEL-MSK-MNT2022-08-05Announced
31.133.40.0/24RIPE—LEVEL-MSK-MNT2022-08-05Announced
31.133.42.0/24RIPE—LEVEL-MSK-MNT2023-06-13Announced
2a0d:df80::/31RIPE—LEVEL-MSK-MNT2024-11-28Announced

IRR

AS-sets

The as-set is what upstreams expand to build this network's customer filter. Sets that list AS52091 directly show who expects to carry it.

AS-setWhereRelationship
AS-LEVEL-MSKPeeringDBDeclared by the operator as its own set
AS-ICNETRIPELists AS52091 as a direct member
AS-LEVEL-MSKRIPELists AS52091 as a direct member
AS-LEVEL-MSK6RIPELists AS52091 as a direct member
AS-RASCOMRIPELists AS52091 as a direct member
AS-RED-IX-PEERSRIPELists AS52091 as a direct member
AS-RETN-ACTUAL-V4RIPELists AS52091 as a direct member
AS-RETN-ACTUAL-V6RIPELists AS52091 as a direct member
AS-SOVAM-V6RIPELists AS52091 as a direct member
AS-TRANSROUTE-SPECRIPELists AS52091 as a direct member
AS-TTKRIPELists AS52091 as a direct member
AS-UT52-CUSTOMERSRIPELists AS52091 as a direct member
AS20764:AS-RASCOMRIPELists AS52091 as a direct member
AS41194:AS-RASCOMRIPELists AS52091 as a direct member

RPKI from rpki-client, validated 2026-10-12 12:10 UTC. IRR from ARIN, RADB, RIPE, ALTDB, APNIC, LACNIC, NTTCOM, AFRINIC, collected 2026-10-12. Cross-check on bgp.he.net.