Routing security

AS11480 CITY-SIOUXFALLS - City of Sioux Falls

Unclassified ARIN

RPKI valid 100% 2 of 2 announcements

RPKI invalid 0 none

No ROA 0 not covered by any ROA

IRR registered 100% 0 missing · 0 other origin

ROAs 2 authorising this AS

Announcements

What this network originates

2 observed

Every prefix observed with AS11480 as its origin, checked against RPKI and the IRR. Problems sort first.

Prefix	RPKI	IRR	Vantage points
206.176.32.0/22	RPKI valid	IRR	56
206.176.36.0/24	RPKI valid	IRR	56

RPKI · ROAs

Route origin authorisations

2 ROAs

Signed statements by address holders that AS11480 may originate these prefixes, up to the maximum length shown.

Prefix	Max length	Trust anchor
206.176.32.0/22	/24	ARIN
206.176.36.0/24	/24	ARIN

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

2 objects · 0 not announced

Route objects naming AS11480 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.

Prefix	Source	Description	Maintainer	Changed	Routing
206.176.32.0/22	ARIN	South Dakota State Government	`MNT-SDSG`	2026-09-18	Announced
206.176.36.0/24	ARIN	South Dakota State Government	`MNT-SDSG`	2026-09-18	Announced

IRR

AS-sets

The as-set is what upstreams expand to build this network's customer filter. Sets that list AS11480 directly show who expects to carry it.

AS-set	Where	Relationship
`AS-HURRICANE`	RADB	Lists AS11480 as a direct member
`AS11232:AS-SDBIT`	ARIN	Lists AS11480 as a direct member

RPKI from rpki-client, validated 2026-11-06 13:02 UTC. IRR from ARIN, RADB, RIPE, ALTDB, APNIC, LACNIC, NTTCOM, AFRINIC, collected 2026-11-06. Cross-check on bgp.he.net.