Network · data from 2026-11-12
AS19923 SHENANDOAH-UNIV - Shenandoah University
Registry name: SHENANDOAH-UNIV - Shenandoah University, US · not in PeeringDB
Announced routes
Every prefix a peer of the route collectors sees with origin AS19923, 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.
| 204.154.81.0/24 | No ROA | Other origin onlycovered by 204.154.80.0/21 | 673 100% |
| 204.154.80.0/24 | No ROA | Other origin onlycovered by 204.154.80.0/21 | 671 100% |
| 204.154.82.0/24 | No ROA | Other origin onlycovered by 204.154.80.0/21 | 671 100% |
| 204.154.83.0/24 | No ROA | Other origin onlycovered by 204.154.80.0/21 | 671 100% |
| 204.154.84.0/24 | No ROA | Other origin onlycovered by 204.154.80.0/21 | 671 100% |
| 204.154.85.0/24 | No ROA | Other origin onlycovered by 204.154.80.0/21 | 671 100% |
| 204.154.86.0/24 | No ROA | Other origin onlycovered by 204.154.80.0/21 | 671 100% |
| 204.154.87.0/24 | No ROA | Other origin onlycovered by 204.154.80.0/21 | 671 100% |
AS-SET
AS19923 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 17 are in fix.csv.
- ROA: none8
- Route object: none8
- Route object: not announced1
| Change | Prefix or set | Detail |
|---|---|---|
| ROA: none | 204.154.81.0/24 | No ROA covers it. Add a ROA for AS19923, maxLength 24. |
| Route object: none | 204.154.81.0/24 | Route objects for it name AS4922. A route object for 204.154.80.0/21 with origin AS19923 covers it (filters allowing more-specifics accept it). Add a route object with origin AS19923 in the RIR database for the space. |
| ROA: none | 204.154.80.0/24 | No ROA covers it. Add a ROA for AS19923, maxLength 24. |
| Route object: none | 204.154.80.0/24 | Route objects for it name AS4922. A route object for 204.154.80.0/21 with origin AS19923 covers it (filters allowing more-specifics accept it). Add a route object with origin AS19923 in the RIR database for the space. |
| ROA: none | 204.154.82.0/24 | No ROA covers it. Add a ROA for AS19923, maxLength 24. |
| Route object: none | 204.154.82.0/24 | Route objects for it name AS4922. A route object for 204.154.80.0/21 with origin AS19923 covers it (filters allowing more-specifics accept it). Add a route object with origin AS19923 in the RIR database for the space. |
| ROA: none | 204.154.83.0/24 | No ROA covers it. Add a ROA for AS19923, maxLength 24. |
| Route object: none | 204.154.83.0/24 | Route objects for it name AS4922. A route object for 204.154.80.0/21 with origin AS19923 covers it (filters allowing more-specifics accept it). Add a route object with origin AS19923 in the RIR database for the space. |
| ROA: none | 204.154.84.0/24 | No ROA covers it. Add a ROA for AS19923, maxLength 24. |
| Route object: none | 204.154.84.0/24 | Route objects for it name AS4922. A route object for 204.154.80.0/21 with origin AS19923 covers it (filters allowing more-specifics accept it). Add a route object with origin AS19923 in the RIR database for the space. |
| ROA: none | 204.154.85.0/24 | No ROA covers it. Add a ROA for AS19923, maxLength 24. |
| Route object: none | 204.154.85.0/24 | Route objects for it name AS4922. A route object for 204.154.80.0/21 with origin AS19923 covers it (filters allowing more-specifics accept it). Add a route object with origin AS19923 in the RIR database for the space. |
| ROA: none | 204.154.86.0/24 | No ROA covers it. Add a ROA for AS19923, maxLength 24. |
| Route object: none | 204.154.86.0/24 | Route objects for it name AS4922. A route object for 204.154.80.0/21 with origin AS19923 covers it (filters allowing more-specifics accept it). Add a route object with origin AS19923 in the RIR database for the space. |
| ROA: none | 204.154.87.0/24 | No ROA covers it. Add a ROA for AS19923, maxLength 24. |
| Route object: none | 204.154.87.0/24 | Route objects for it name AS4922. A route object for 204.154.80.0/21 with origin AS19923 covers it (filters allowing more-specifics accept it). Add a route object with origin AS19923 in the RIR database for the space. |
Route objects not announced
Route objects with origin AS19923 whose prefix no peer sees AS19923 announce. Many are kept on purpose (backup routes, space announced only in some places).
| 204.154.80.0/21 | NTTCOM, RADB | No ROA |
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.