asn.dev

Routing security

AS21504 BESSEMER-GROUP-INCORPORATED

Unclassified ARIN

RPKI valid 20% 4 of 20 announcements
RPKI invalid 0 none
No ROA 16 not covered by any ROA
IRR registered 100% 0 missing · 0 other origin
ROAs 4 authorising this AS

Announcements

What this network originates

20 observed

Every prefix observed with AS21504 as its origin, checked against RPKI and the IRR. Problems sort first.

PrefixRPKIIRRVantage points
198.160.34.0/24No ROAIRR52
198.160.35.0/24No ROAIRR51
198.160.37.0/24No ROAIRR covering52
198.160.38.0/24No ROAIRR41
198.160.39.0/24No ROAIRR covering52
198.160.40.0/24No ROAIRR51
198.160.42.0/24No ROAIRR51
198.160.43.0/24No ROAIRR52
198.160.44.0/24No ROAIRR51
198.160.48.0/24No ROAIRR covering52
198.160.49.0/24No ROAIRR51
198.160.52.0/24No ROAIRR52
198.160.53.0/24No ROAIRR51
198.160.54.0/24No ROAIRR52
198.160.55.0/24No ROAIRR51
198.160.57.0/24No ROAIRR51
198.160.45.0/24RPKI validIRR52
198.160.50.0/23RPKI validIRR52
198.160.50.0/24RPKI validIRR51
198.160.51.0/24RPKI validIRR51

RPKI · ROAs

Route origin authorisations

4 ROAs

Signed statements by address holders that AS21504 may originate these prefixes, up to the maximum length shown.

PrefixMax lengthTrust anchor
198.160.45.0/24/24ARIN
198.160.50.0/23/23ARIN
198.160.50.0/24/24ARIN
198.160.51.0/24/24ARIN

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

36 objects · 9 not announced

Route objects naming AS21504 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
198.160.32.0/20ARINThe Bessemer Group Inc.MNT-BESSEM-Z2023-07-12Not announced
198.160.34.0/23RADBComcast Cable Communications, Inc.MAINT-AS79222023-11-13Not announced
198.160.36.0/24ARINThe Bessemer Group Inc.MNT-BESSEM2023-07-12Not announced
198.160.41.0/24RADBComcast Cable Communications, Inc.MAINT-AS79222023-11-13Not announced
198.160.48.0/23ARINThe Bessemer Group Inc.MNT-BESSEM-Z2023-07-12Not announced
198.160.52.0/22ARINThe Bessemer Group Inc.MNT-BESSEM-1-Z2023-08-28Not announced
198.160.52.0/23RADBBessemer TrustMAINT-AS464502023-11-13Not announced
198.160.56.0/23ARINThe Bessemer Group Inc.MNT-BESSEM-1-Z2023-08-28Not announced
198.160.56.0/24ARINThe Bessemer Group Inc.MNT-BESSEM-1-Z2023-08-28Not announced
198.160.34.0/24ARINThe Bessemer Group Inc.MNT-BESSEM-Z2023-07-28Announced
198.160.34.0/24RADBComcast Cable Communications, Inc.MAINT-AS79222023-11-13Announced
198.160.35.0/24RADBComcast Cable Communications, Inc.MAINT-AS79222023-11-13Announced
198.160.38.0/24ARINThe Bessemer Group Inc.MNT-BESSEM-Z2023-07-28Announced
198.160.38.0/24RADBRR-RC-The Bessemer Group, Inc.-NYCMAINT-RR2023-11-13Announced
198.160.40.0/24RADBBessemer Trust route objectMAINT-AS550022023-11-13Announced
198.160.42.0/24RADBbessemer trust proxy route objectMAINT-AS550022023-11-13Announced
198.160.43.0/24ARINThe Bessemer Group Inc.MNT-BESSEM-Z2023-07-28Announced
198.160.43.0/24RADBBessemer Trust CompanyMAINT-AS275062023-11-13Announced
198.160.44.0/24ARINThe Bessemer Group Inc.MNT-BESSEM2023-07-12Announced
198.160.44.0/24RADBComcast Cable Communications, Inc.MAINT-AS79222023-11-13Announced
198.160.45.0/24ARINThe Bessemer Group, Inc.MNT-BESSEM-Z2025-03-25Announced
198.160.45.0/24RADBBessemer Trust CompanyMAINT-AS275062025-01-08Announced
198.160.49.0/24RADBbessemer proxy route objectMAINT-AS550022023-11-13Announced
198.160.50.0/23ARINThe Bessemer Group Inc.MNT-BESSEM-1-Z2023-08-28Announced
198.160.50.0/23RADBBessemer Trust CompanyMAINT-AS275062024-10-23Announced
198.160.50.0/24ARINThe Bessemer Group Inc.MNT-BESSEM-1-Z2023-08-28Announced
198.160.50.0/24RADBBessemer Trust CompanyMAINT-AS275062024-10-23Announced
198.160.51.0/24ARINThe Bessemer Group Inc.MNT-BESSEM-1-Z2023-08-28Announced
198.160.51.0/24RADBbessemer proxy route objectMAINT-AS550022023-11-13Announced
198.160.52.0/24ARINThe Bessemer Group Inc.MNT-BESSEM-1-Z2023-08-28Announced
198.160.52.0/24RADBBessemer Trust CompanyMAINT-AS275062024-07-11Announced
198.160.53.0/24ARINThe Bessemer Group Inc.MNT-BESSEM-1-Z2023-08-28Announced
198.160.53.0/24RADBbessemer proxy route objectMAINT-AS550022023-11-13Announced
198.160.54.0/24ARINThe Bessemer Group Inc.MNT-BESSEM-1-Z2023-08-28Announced
198.160.55.0/24ARINThe Bessemer Group Inc.MNT-BESSEM-1-Z2023-08-28Announced
198.160.57.0/24ARINThe Bessemer Group Inc.MNT-BESSEM-1-Z2023-08-28Announced

IRR

AS-sets

The as-set is what upstreams expand to build this network's customer filter. Sets that list AS21504 directly show who expects to carry it.

AS-setWhereRelationship
AS-46450RADBLists AS21504 as a direct member
AS-CCFRADBLists AS21504 as a direct member
AS-CCF-TESTRADBLists AS21504 as a direct member
AS-COMCAST-EDIARADBLists AS21504 as a direct member
AS-DEFENSERADBLists AS21504 as a direct member
AS-F5RIPELists AS21504 as a direct member
AS-RR-BIZRADBLists AS21504 as a direct member
AS1221:AS-CUSTOMERSAPNICLists AS21504 as a direct member
AS16657:AS-CUSTRADBLists AS21504 as a direct member
AS35280:AS-DEFENSERIPELists AS21504 as a direct member
AS35280:AS-F5RIPELists AS21504 as a direct member
AS6128:AS-CUSTOMERSARINLists AS21504 as a direct member

RPKI from rpki-client, validated 2026-10-20 11:55 UTC. IRR from ARIN, RADB, RIPE, ALTDB, APNIC, LACNIC, NTTCOM, AFRINIC, collected 2026-10-20. Cross-check on bgp.he.net.