asn.dev

Routing security

AS51809 BRSK

Unclassified RIPE Cable/DSL/ISP

RPKI valid 83% 33 of 40 announcements
RPKI invalid 0 none
No ROA 7 not covered by any ROA
IRR registered 100% 0 missing · 0 other origin
ROAs 34 authorising this AS

Announcements

What this network originates

40 observed

Every prefix observed with AS51809 as its origin, checked against RPKI and the IRR. Problems sort first.

PrefixRPKIIRRVantage points
31.98.72.0/21No ROAIRR52
31.98.80.0/20No ROAIRR52
45.41.148.0/22No ROAIRR52
45.61.104.0/21No ROAIRR52
104.238.40.0/21No ROAIRR52
104.238.58.0/23No ROAIRR52
104.238.62.0/23No ROAIRR52
2a10:d580::/29RPKI validIRR30
45.82.140.0/22RPKI validIRR52
63.135.72.0/21RPKI validIRR52
67.208.52.0/22RPKI validIRR52
88.97.160.0/21RPKI validIRR52
88.97.176.0/20RPKI validIRR52
89.127.224.0/22RPKI validIRR52
185.138.196.0/22RPKI validIRR52
185.232.119.0/24RPKI validIRR52
195.40.32.0/24RPKI validIRR52
195.40.33.0/24RPKI validIRR52
195.40.34.0/24RPKI validIRR52
195.40.35.0/24RPKI validIRR52
195.40.36.0/24RPKI validIRR52
195.40.37.0/24RPKI validIRR52
195.40.38.0/24RPKI validIRR52
195.40.39.0/24RPKI validIRR52
195.40.40.0/24RPKI validIRR52
195.40.41.0/24RPKI validIRR52
195.40.42.0/24RPKI validIRR52
195.40.43.0/24RPKI validIRR52
195.40.44.0/24RPKI validIRR52
195.40.45.0/24RPKI validIRR52
195.40.46.0/24RPKI validIRR52
195.40.47.0/24RPKI validIRR52
195.40.48.0/24RPKI validIRR52
195.40.49.0/24RPKI validIRR52
195.40.50.0/24RPKI validIRR52
195.40.51.0/24RPKI validIRR52
195.40.52.0/24RPKI validIRR52
195.40.53.0/24RPKI validIRR52
195.40.54.0/24RPKI validIRR52
195.40.55.0/24RPKI validIRR52

RPKI · ROAs

Route origin authorisations

34 ROAs

Signed statements by address holders that AS51809 may originate these prefixes, up to the maximum length shown.

PrefixMax lengthTrust anchor
45.82.140.0/22/22RIPENCC
63.135.72.0/21/21RIPENCC
67.208.52.0/22/22RIPENCC
87.192.96.0/21/21RIPENCC
88.97.160.0/21/21RIPENCC
88.97.176.0/20/20RIPENCC
89.127.224.0/22/22RIPENCC
185.138.196.0/22/22RIPENCC
185.232.119.0/24/24RIPENCC
195.40.32.0/24/24RIPENCC
195.40.33.0/24/24RIPENCC
195.40.34.0/24/24RIPENCC
195.40.35.0/24/24RIPENCC
195.40.36.0/24/24RIPENCC
195.40.37.0/24/24RIPENCC
195.40.38.0/24/24RIPENCC
195.40.39.0/24/24RIPENCC
195.40.40.0/24/24RIPENCC
195.40.41.0/24/24RIPENCC
195.40.42.0/24/24RIPENCC
195.40.43.0/24/24RIPENCC
195.40.44.0/24/24RIPENCC
195.40.45.0/24/24RIPENCC
195.40.46.0/24/24RIPENCC
195.40.47.0/24/24RIPENCC
195.40.48.0/24/24RIPENCC
195.40.49.0/24/24RIPENCC
195.40.50.0/24/24RIPENCC
195.40.51.0/24/24RIPENCC
195.40.52.0/24/24RIPENCC
195.40.53.0/24/24RIPENCC
195.40.54.0/24/24RIPENCC
195.40.55.0/24/24RIPENCC
2a10:d580::/29/29RIPENCC

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

RPKI · ASPA

Declared transit providers

No ASPA record This network has not published an ASPA object. ASPA lets a network sign the list of its transit providers, so routers can reject paths that route through anyone else (route leaks). Only a few thousand networks publish one so far, so its absence is normal.

IRR

Registered route objects

41 objects · 1 not announced

Route objects naming AS51809 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
87.192.96.0/21RIPE—MNT-UK-YOUFIBRE-12025-11-10Not announced
31.98.72.0/21RIPE—LIR-US-WOOKRA-1-MNT2025-09-24Announced
31.98.80.0/20RIPE—LIR-US-WOOKRA-1-MNT2025-09-24Announced
45.41.148.0/22ARINBrsk LimitedMNT-WL-1132025-01-06Announced
45.61.104.0/21ARINBrsk LimitedMNT-WL-1132025-01-06Announced
45.82.140.0/22RIPE—BRSK-MNT2021-06-01Announced
63.135.72.0/21RIPE—BRSK-MNT2021-04-12Announced
67.208.52.0/22RIPE—BRSK-MNT2021-06-15Announced
88.97.160.0/21RIPE—BRSK-MNT2024-06-25Announced
88.97.176.0/20RIPE—BRSK-MNT2025-06-03Announced
89.127.224.0/22RIPE—MNT-UK-YOUFIBRE-12026-09-07Announced
104.238.40.0/21ARINBRSK LimitedMNT-WL-1132024-09-04Announced
104.238.58.0/23ARINBrsk LimitedMNT-WL-1132025-01-06Announced
104.238.62.0/23ARINBrsk LimitedMNT-WL-1132025-01-06Announced
185.138.196.0/22RIPE—MNT-UK-YOUFIBRE-12025-02-06Announced
185.232.119.0/24RIPE—BRSK-MNT2021-04-12Announced
195.40.32.0/24RIPE—AS3257-IPAM-MNT2025-09-29Announced
195.40.33.0/24RIPE—AS3257-IPAM-MNT2025-09-29Announced
195.40.34.0/24RIPE—AS3257-IPAM-MNT2025-09-29Announced
195.40.35.0/24RIPE—AS3257-IPAM-MNT2025-09-29Announced
195.40.36.0/24RIPE—AS3257-IPAM-MNT2025-09-29Announced
195.40.37.0/24RIPE—AS3257-IPAM-MNT2025-09-29Announced
195.40.38.0/24RIPE—AS3257-IPAM-MNT2025-09-29Announced
195.40.39.0/24RIPE—AS3257-IPAM-MNT2025-09-29Announced
195.40.40.0/24RIPE—AS3257-IPAM-MNT2025-09-29Announced
195.40.41.0/24RIPE—AS3257-IPAM-MNT2025-09-29Announced
195.40.42.0/24RIPE—AS3257-IPAM-MNT2025-09-29Announced
195.40.43.0/24RIPE—AS3257-IPAM-MNT2025-09-29Announced
195.40.44.0/24RIPE—AS3257-IPAM-MNT2025-09-29Announced
195.40.45.0/24RIPE—AS3257-IPAM-MNT2025-09-29Announced
195.40.46.0/24RIPE—AS3257-IPAM-MNT2025-09-29Announced
195.40.47.0/24RIPE—AS3257-IPAM-MNT2025-09-29Announced
195.40.48.0/24RIPE—AS3257-IPAM-MNT2025-09-29Announced
195.40.49.0/24RIPE—AS3257-IPAM-MNT2025-09-29Announced
195.40.50.0/24RIPE—AS3257-IPAM-MNT2025-09-29Announced
195.40.51.0/24RIPE—AS3257-IPAM-MNT2025-09-29Announced
195.40.52.0/24RIPE—AS3257-IPAM-MNT2025-09-29Announced
195.40.53.0/24RIPE—AS3257-IPAM-MNT2025-09-29Announced
195.40.54.0/24RIPE—AS3257-IPAM-MNT2025-09-29Announced
195.40.55.0/24RIPE—AS3257-IPAM-MNT2025-09-29Announced
2a10:d580::/29RIPE—BRSK-MNT2021-04-12Announced

IRR

AS-sets

The as-set is what upstreams expand to build this network's customer filter. Sets that list AS51809 directly show who expects to carry it.

AS-setWhereRelationship
AS-BRSKPeeringDBDeclared by the operator as its own set
AS-BRSKRIPELists AS51809 as a direct member
AS-ROSTELECOMRIPELists AS51809 as a direct member
AS-SIBNETRIPELists AS51809 as a direct member

RPKI from rpki-client, validated 2026-10-23 12:03 UTC. IRR from ARIN, RADB, RIPE, ALTDB, APNIC, LACNIC, NTTCOM, AFRINIC, collected 2026-10-23. Cross-check on bgp.he.net.