asn.dev

Routing security

AS3456 TWC-3456-IT

Residential ARIN

RPKI valid 100% 16 of 16 announcements
RPKI invalid 0 none
No ROA 0 not covered by any ROA
IRR registered 75% 4 missing · 0 other origin
ROAs 18 authorising this AS

Announcements

What this network originates

16 observed

Every prefix observed with AS3456 as its origin, checked against RPKI and the IRR. Problems sort first.

PrefixRPKIIRRVantage points
2600:5c00:21cf::/48RPKI validNo IRR31
2600:5c00:21d1::/48RPKI validNo IRR31
2600:5c00:2304::/48RPKI validNo IRR31
2600:5c00:2541::/48RPKI validNo IRR31
67.48.224.0/19RPKI validIRR54
142.136.0.0/16RPKI validIRR54
165.237.0.0/16RPKI validIRR54
165.237.14.0/24RPKI validIRR54
165.237.15.0/24RPKI validIRR54
192.219.231.0/24RPKI validIRR54
204.29.131.0/24RPKI validIRR54
204.235.112.0/21RPKI validIRR54
204.235.120.0/23RPKI validIRR54
2001:1998:2000::/36RPKI validIRR31
2001:1998:3000::/36RPKI validIRR31
2001:1998:3100::/48RPKI validIRR covering29

RPKI · ROAs

Route origin authorisations

18 ROAs

Signed statements by address holders that AS3456 may originate these prefixes, up to the maximum length shown.

PrefixMax lengthTrust anchor
67.48.224.0/19/19ARIN
142.136.0.0/16/16ARIN
142.136.0.0/21/21ARIN
165.237.0.0/16/16ARIN
165.237.9.0/24/24ARIN
165.237.14.0/24/24ARIN
165.237.15.0/24/24ARIN
192.219.231.0/24/24ARIN
204.29.131.0/24/24ARIN
204.235.112.0/21/21ARIN
204.235.120.0/23/23ARIN
2001:1998:2000::/36/36ARIN
2001:1998:3000::/36/36ARIN
2001:1998:3100::/48/48ARIN
2600:5c00:21cf::/48/48ARIN
2600:5c00:21d1::/48/48ARIN
2600:5c00:2304::/48/48ARIN
2600:5c00:2541::/48/48ARIN

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

11 objects · 0 not announced

Route objects naming AS3456 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
67.48.224.0/19RADBRR-RC-Time Warner Cable-TSGMAINT-RR2023-11-13Announced
142.136.0.0/16RADBTime Warner CableMAINT-RR2023-11-13Announced
165.237.0.0/16RADBCharter CommunicationsMAINT-RR2026-03-06Announced
165.237.14.0/24RADBCharter CommunicationsMAINT-RR2026-03-06Announced
165.237.15.0/24RADBCharter CommunicationsMAINT-RR2026-03-06Announced
192.219.231.0/24RADBCharter CommunicationsMAINT-RR2026-03-06Announced
204.29.131.0/24RADBCharter CommunicationsMAINT-RR2026-03-06Announced
204.235.112.0/21RADBCharter CommunicationsMAINT-RR2026-03-06Announced
204.235.120.0/23RADBCharter CommunicationsMAINT-RR2026-03-06Announced
2001:1998:2000::/36RADBRR-RouteMAINT-RR2023-11-13Announced
2001:1998:3000::/36RADBRR-RouteMAINT-RR2023-11-13Announced

IRR

AS-sets

The as-set is what upstreams expand to build this network's customer filter. Sets that list AS3456 directly show who expects to carry it.

AS-setWhereRelationship
AS-CHTR-CC-3517ARINLists AS3456 as a direct member
AS-CHTR-CC-3518ARINLists AS3456 as a direct member
AS-CHTR-CC-4423ARINLists AS3456 as a direct member
AS-CHTR-CC04ARINLists AS3456 as a direct member
AS-CHTR-SYNCRADBLists AS3456 as a direct member
AS-HURRICANERADBLists AS3456 as a direct member
AS-HURRICANEV6RADBLists AS3456 as a direct member
AS-RR-RESRADBLists AS3456 as a direct member
AS-XO-BARINLists AS3456 as a direct member

RPKI from rpki-client, validated 2026-10-18 12:08 UTC. IRR from ARIN, RADB, RIPE, ALTDB, APNIC, LACNIC, NTTCOM, AFRINIC, collected 2026-10-18. Cross-check on bgp.he.net.