asn.dev

Routing security

AS21896 ALLIANT-ENERGY

Unclassified ARIN

RPKI valid 0% 0 of 8 announcements
RPKI invalid 0 none
No ROA 8 not covered by any ROA
IRR registered 100% 0 missing · 0 other origin
ROAs 0 authorising this AS

Announcements

What this network originates

8 observed

Every prefix observed with AS21896 as its origin, checked against RPKI and the IRR. Problems sort first.

PrefixRPKIIRRVantage points
198.7.38.0/23No ROAIRR54
198.7.42.0/23No ROAIRR54
198.7.44.0/23No ROAIRR54
198.7.46.0/23No ROAIRR54
207.71.128.0/23No ROAIRR57
207.71.134.0/23No ROAIRR57
207.71.136.0/23No ROAIRR57
207.71.142.0/23No ROAIRR57

RPKI · ROAs

Route origin authorisations

0 ROAs

Signed statements by address holders that AS21896 may originate these prefixes, up to the maximum length shown.

No ROA names this AS as an authorised origin.

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 · 25 not announced

Route objects naming AS21896 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
198.7.32.0/20ARINAlliant Energy MadisonMNT-ALLIA-1012020-12-08Not announced
198.7.32.0/20RADBAlliant EnergyMAINT-CHTR-WD2023-11-13Not announced
198.7.38.0/24ARINAlliant Energy MadisonMNT-ALLIA-1012020-12-08Not announced
198.7.39.0/24ARINAlliant Energy MadisonMNT-ALLIA-1012020-12-08Not announced
198.7.42.0/24ARINAlliant Energy MadisonMNT-ALLIA-1012020-12-08Not announced
198.7.43.0/24ARINAlliant Energy MadisonMNT-ALLIA-1012020-12-08Not announced
198.7.44.0/24ARINAlliant Energy MadisonMNT-ALLIA-1012020-12-08Not announced
198.7.45.0/24ARINAlliant Energy MadisonMNT-ALLIA-1012020-12-08Not announced
198.7.46.0/24ARINMNT-ALLIA-101 route 198.007.046.000/24 AS21896MNT-ALLIA-1012020-12-08Not announced
198.7.47.0/24ARINMNT-ALLIA-101 route 198.007.047.000/24 AS21896MNT-ALLIA-1012020-12-08Not announced
198.7.48.0/21ARINAlliant Energy MadisonMNT-ALLIA-1012020-12-08Not announced
198.7.48.0/21RADBAlliant EnergyMAINT-CHTR-WD2023-11-13Not announced
204.126.86.0/23ARINAlliant Energy Cedar RapidsMNT-ALLIA-1012020-12-08Not announced
207.71.128.0/19ARINAlliant Energy Cedar RapidsMNT-ALLIA-1012020-12-08Not announced
207.71.128.0/19RADBAlliant EnergyMAINT-CHTR-WD2023-11-13Not announced
207.71.128.0/24ARINMNT-ALLIA-101 route 207.071.128.000/24 AS21896MNT-ALLIA-1012020-12-08Not announced
207.71.129.0/24ARINAlliant Energy Cedar RapidsMNT-ALLIA-1012020-12-08Not announced
207.71.134.0/24ARINAlliant Energy Cedar RapidsMNT-ALLIA-1012020-12-08Not announced
207.71.135.0/24ARINAlliant Energy Cedar RapidsMNT-ALLIA-1012020-12-08Not announced
207.71.136.0/24ARINAlliant Energy Cedar RapidsMNT-ALLIA-1012020-12-08Not announced
207.71.137.0/24ARINAlliant Energy Cedar RapidsMNT-ALLIA-1012020-12-08Not announced
207.71.142.0/24ARINAlliant Energy Cedar RapidsMNT-ALLIA-1012020-12-08Not announced
207.71.143.0/24ARINAlliant Energy Cedar RapidsMNT-ALLIA-1012020-12-08Not announced
207.71.176.0/20ARINAlliant Energy Cedar RapidsMNT-ALLIA-1012020-12-08Not announced
207.71.176.0/20RADBAlliant EnergyMAINT-CHTR-WD2023-11-13Not announced
198.7.38.0/23ARINAlliant Energy MadisonMNT-ALLIA-1012020-12-08Announced
198.7.38.0/23RADBCHTR-ALLIANT ENERGY-NortheastMAINT-CHTR-WD2026-06-26Announced
198.7.42.0/23ARINAlliant Energy MadisonMNT-ALLIA-1012020-12-08Announced
198.7.42.0/23RADBCHTR-ALLIANT ENERGY-NortheastMAINT-CHTR-WD2026-06-26Announced
198.7.44.0/23ARINAlliant Energy MadisonMNT-ALLIA-1012020-12-08Announced
198.7.44.0/23RADBCHTR-ALLIANT ENERGY-NortheastMAINT-CHTR-WD2026-06-26Announced
198.7.46.0/23ARINAlliant Energy MadisonMNT-ALLIA-1012020-12-08Announced
198.7.46.0/23RADBCHTR-ALLIANT ENERGY-NortheastMAINT-CHTR-WD2026-06-26Announced
207.71.128.0/23ARINAlliant Energy Cedar RapidsMNT-ALLIA-1012020-12-08Announced
207.71.128.0/23RADBCHTR-ALLIANT ENERGY-NortheastMAINT-CHTR-WD2026-06-26Announced
207.71.134.0/23ARINAlliant Energy Cedar RapidsMNT-ALLIA-1012020-12-08Announced
207.71.134.0/23RADBCHTR-ALLIANT ENERGY-NortheastMAINT-CHTR-WD2026-06-26Announced
207.71.136.0/23ARINAlliant Energy Cedar RapidsMNT-ALLIA-1012020-12-08Announced
207.71.136.0/23RADBCHTR-ALLIANT ENERGY-NortheastMAINT-CHTR-WD2026-06-26Announced
207.71.142.0/23ARINAlliant Energy Cedar RapidsMNT-ALLIA-1012020-12-08Announced
207.71.142.0/23RADBCHTR-ALLIANT ENERGY-NortheastMAINT-CHTR-WD2026-06-26Announced

IRR

AS-sets

The as-set is what upstreams expand to build this network's customer filter. Sets that list AS21896 directly show who expects to carry it.

AS-setWhereRelationship
AS-13986RADBLists AS21896 as a direct member
AS-18474RADBLists AS21896 as a direct member
AS-CHIEF-TRANSITRADBLists AS21896 as a direct member
AS-CHTR-BBRADBLists AS21896 as a direct member
AS-HURRICANERADBLists AS21896 as a direct member
AS-RR-SYNCRADBLists AS21896 as a direct member
AS-SBCIS-5102RADBLists AS21896 as a direct member
AS-TDS-TRANSITARINLists AS21896 as a direct member
AS-TEST-TDS-TRANSITARINLists AS21896 as a direct member
AS-TEST1-TDS-TRANSITARINLists AS21896 as a direct member
AS-TEST2-TDS-TRANSITARINLists AS21896 as a direct member
AS-TRANSROUTE-SPECRIPELists AS21896 as a direct member
AS-WINDSTREAM-CUSTRADBLists AS21896 as a direct member
AS393238:AS-CUSTOMERSARINLists AS21896 as a direct member

RPKI from rpki-client, validated 2026-10-17 12:17 UTC. IRR from ARIN, RADB, RIPE, ALTDB, APNIC, LACNIC, NTTCOM, collected 2026-10-17. Cross-check on bgp.he.net.