bgpreport

Network · data from 2026-11-12

AS21794 Ameren Corp

Registry name: AMEREN-AS2 - Ameren Corp., US · PeeringDB

2IPv4 routes 100.0% RPKI valid · 100.0% with a route object
0IPv6 routes
0RPKI invalid 0 origin · 0 maxLength
0No ROA 0 with no route object for this origin
1Low visibility seen by under 10% of full-table peers
13Route objects not announced registered with origin AS21794, seen from no peer

Announced routes

Every prefix a peer of the route collectors sees with origin AS21794, things to look at first. Visibility = full-table peers that see it, of 673 (IPv4) and 636 (IPv6) on 75 collectors. Also as routes.csv.

192.189.96.0/24 Valid RIR databaseARIN, RADB 673 100% 67
192.189.97.0/24 Valid RIR databaseARIN, RADB 18 3%low visibility 14

AS-SET

PeeringDB's irr_as_set for AS21794: ARIN::AS-AMEREN. Expanded from the day's IRR dumps the way bgpq4 does against whois.radb.net: a name with a database is read from that database only, one without from the first database in RADB's order. "Not covered" = this network's own routes that a filter built from the set would leave out (AS21794 isn't in the set, or no route object for AS21794 covers the route; more-specifics of a route object are accepted down to /24 and /48, as with bgpq4 -A -R 24 / -R 48). Customers' routes aren't counted: the collectors show each route's origin, not which network it came through.

NameDatabaseASNsSets Route objectsAS21794 in itNot covered
ARIN::AS-AMEREN ARIN 2132 Yes 0

Fix list

The changes that would bring RPKI, the IRR and what's announced into line. Some are deliberate (a route object kept for a backup route, say); the network decides. All 13 are in fix.csv.

  • Route object: not announced13

Route objects not announced

Route objects with origin AS21794 whose prefix no peer sees AS21794 announce. Many are kept on purpose (backup routes, space announced only in some places).

192.104.244.0/24RADBNo ROA
192.189.98.0/24ARIN, RADBValid
198.51.216.0/24ARIN, RADBValid
199.38.133.0/24ARIN, RADBValid
204.136.0.0/24RADBNo ROA
204.136.1.0/24RADBNo ROA
204.136.2.0/24RADBNo ROA
204.136.3.0/24RADBNo ROA
204.136.4.0/24RADBNo ROA
204.136.5.0/24RADBNo ROA
204.136.6.0/24RADBNo ROA
204.136.7.0/24RADBNo ROA
204.136.9.0/24ARIN, RADBValid

Routes: the 08:00 UTC snapshots of 2026-11-12 from 75 RIPE RIS and RouteViews collectors. RPKI: our rpki-client run before the snapshot. IRR: the day's dumps of the five RIR databases and RADB's mirrors. The LEVEL3 and IDNIC databases publish no dump and aren't read, so route objects only there count as none.