Network · data from 2026-11-12

AS5724 University of Massachusetts Medical School

Registry name: UMASSMED - University of Massachusetts Medical School, US · PeeringDB

4IPv4 routes 0.0% RPKI valid · 25.0% with a route object

0IPv6 routes

0RPKI invalid 0 origin · 0 maxLength

4No 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 AS5724, seen from no peer

Announced routes

Every prefix a peer of the route collectors sees with origin AS5724, 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.


146.189.128.0/21	No ROA	Other origin onlycovered by 146.189.0.0/16	672 100%	68
146.189.25.0/24	No ROA	Other origin onlycovered by 146.189.0.0/16	670 100%	68
146.189.26.0/24	No ROA	Other origin onlycovered by 146.189.0.0/16	670 100%	68
146.189.0.0/16	No ROA	RIR databaseARIN	671 100%	68

AS-SET

AS5724's PeeringDB record names no 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 7 are in fix.csv.

ROA: none4
Route object: none3

Change	Prefix or set	Detail	Full-table peers
ROA: none	146.189.128.0/21	No ROA covers it. Add a ROA for AS5724, maxLength 21.	672 of 673
Route object: none	146.189.128.0/21	Route objects for it name AS398427. A route object for 146.189.0.0/16 with origin AS5724 covers it (filters allowing more-specifics accept it). Add a route object with origin AS5724 in the RIR database for the space.	672 of 673
ROA: none	146.189.25.0/24	No ROA covers it. Add a ROA for AS5724, maxLength 24.	670 of 673
Route object: none	146.189.25.0/24	Route objects for it name AS398427. A route object for 146.189.0.0/16 with origin AS5724 covers it (filters allowing more-specifics accept it). Add a route object with origin AS5724 in the RIR database for the space.	670 of 673
ROA: none	146.189.26.0/24	No ROA covers it. Add a ROA for AS5724, maxLength 24.	670 of 673
Route object: none	146.189.26.0/24	Route objects for it name AS398427. A route object for 146.189.0.0/16 with origin AS5724 covers it (filters allowing more-specifics accept it). Add a route object with origin AS5724 in the RIR database for the space.	670 of 673
ROA: none	146.189.0.0/16	No ROA covers it. Add a ROA for AS5724, maxLength 16.	671 of 673

Change

Prefix or set

Detail

Full-table peers

ROA: none

146.189.128.0/21

No ROA covers it. Add a ROA for AS5724, maxLength 21.

672 of 673

Route object: none

146.189.128.0/21

Route objects for it name AS398427. A route object for 146.189.0.0/16 with origin AS5724 covers it (filters allowing more-specifics accept it). Add a route object with origin AS5724 in the RIR database for the space.

672 of 673

ROA: none

146.189.25.0/24

No ROA covers it. Add a ROA for AS5724, maxLength 24.

670 of 673

Route object: none

146.189.25.0/24

670 of 673

ROA: none

146.189.26.0/24

No ROA covers it. Add a ROA for AS5724, maxLength 24.

670 of 673

Route object: none

146.189.26.0/24

670 of 673

ROA: none

146.189.0.0/16

No ROA covers it. Add a ROA for AS5724, maxLength 16.

671 of 673

Route objects not announced

Every route object with origin AS5724 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.