Network · data from 2026-11-12

AS53577 URSINUS - Ursinus College

Registry name: URSINUS - Ursinus College, US · not in PeeringDB

10IPv4 routes 80.0% RPKI valid · 70.0% with a route object

0IPv6 routes

0RPKI invalid 0 origin · 0 maxLength

2No ROA 3 with no route object for this origin

0Low visibility seen by under 10% of full-table peers

0Route objects not announced registered with origin AS53577, seen from no peer

Announced routes

Every prefix a peer of the route collectors sees with origin AS53577, 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.


38.98.223.0/24	No ROA	Other IRR onlyRADB	671 100%	69
198.17.40.0/24	No ROA	Other IRR onlyRADB	670 100%	69
192.204.106.0/24	Valid	None	673 100%	67
192.204.144.0/24	Valid	None	673 100%	67
192.204.145.0/24	Valid	None	673 100%	67
192.204.107.0/24	Valid	Other IRR onlyRADB	671 100%	69
192.204.146.0/24	Valid	Other IRR onlyRADB	671 100%	69
192.204.148.0/24	Valid	Other IRR onlyRADB	671 100%	69
198.138.40.0/23	Valid	Other IRR onlyRADB	671 100%	69
198.138.132.0/22	Valid	Other IRR onlyRADB	671 100%	69

AS-SET

AS53577 isn't in PeeringDB, where networks name their AS-SET.

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 12 are in fix.csv.

ROA: none2
Route object: none3
Route object: RIR7

Change	Prefix or set	Detail	Full-table peers
ROA: none	38.98.223.0/24	No ROA covers it. Add a ROA for AS53577, maxLength 24.	671 of 673
Route object: RIR	38.98.223.0/24	Route object only in RADB. Add it in the RIR database for the space.	671 of 673
ROA: none	198.17.40.0/24	No ROA covers it. Add a ROA for AS53577, maxLength 24.	670 of 673
Route object: RIR	198.17.40.0/24	Route object only in RADB. Add it in the RIR database for the space.	670 of 673
Route object: none	192.204.106.0/24	No route object for it. Add a route object with origin AS53577 in the RIR database for the space.	673 of 673
Route object: none	192.204.144.0/24	No route object for it. Add a route object with origin AS53577 in the RIR database for the space.	673 of 673
Route object: none	192.204.145.0/24	No route object for it. Add a route object with origin AS53577 in the RIR database for the space.	673 of 673
Route object: RIR	192.204.107.0/24	Route object only in RADB. Add it in the RIR database for the space.	671 of 673
Route object: RIR	192.204.146.0/24	Route object only in RADB. Add it in the RIR database for the space.	671 of 673
Route object: RIR	192.204.148.0/24	Route object only in RADB. Add it in the RIR database for the space.	671 of 673
Route object: RIR	198.138.40.0/23	Route object only in RADB. Add it in the RIR database for the space.	671 of 673
Route object: RIR	198.138.132.0/22	Route object only in RADB. Add it in the RIR database for the space.	671 of 673

Change

Prefix or set

Detail

Full-table peers

ROA: none

38.98.223.0/24

No ROA covers it. Add a ROA for AS53577, maxLength 24.

671 of 673

Route object: RIR

38.98.223.0/24

Route object only in RADB. Add it in the RIR database for the space.

671 of 673

ROA: none

198.17.40.0/24

No ROA covers it. Add a ROA for AS53577, maxLength 24.

670 of 673

Route object: RIR

198.17.40.0/24

Route object only in RADB. Add it in the RIR database for the space.

670 of 673

Route object: none

192.204.106.0/24

No route object for it. Add a route object with origin AS53577 in the RIR database for the space.

673 of 673

Route object: none

192.204.144.0/24

No route object for it. Add a route object with origin AS53577 in the RIR database for the space.

673 of 673

Route object: none

192.204.145.0/24

No route object for it. Add a route object with origin AS53577 in the RIR database for the space.

673 of 673

Route object: RIR

192.204.107.0/24

Route object only in RADB. Add it in the RIR database for the space.

671 of 673

Route object: RIR

192.204.146.0/24

Route object only in RADB. Add it in the RIR database for the space.

671 of 673

Route object: RIR

192.204.148.0/24

Route object only in RADB. Add it in the RIR database for the space.

671 of 673

Route object: RIR

198.138.40.0/23

Route object only in RADB. Add it in the RIR database for the space.

671 of 673

Route object: RIR

198.138.132.0/22

Route object only in RADB. Add it in the RIR database for the space.

671 of 673

Route objects not announced

Every route object with origin AS53577 is announced.

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.