Routing security
AS54471 AVH - Androscoggin Valley Hospital
Unclassified ARIN
Announcements
What this network originates
Every prefix observed with AS54471 as its origin, checked against RPKI and the IRR. Problems sort first.
| Prefix | RPKI | IRR | Vantage points |
|---|---|---|---|
| 216.105.192.0/20 | RPKI valid | IRR | 53 |
RPKI · ROAs
Route origin authorisations
Signed statements by address holders that AS54471 may originate these prefixes, up to the maximum length shown.
| Prefix | Max length | Trust anchor |
|---|---|---|
| 216.105.192.0/20 | /21 | ARIN |
ROA-based and RPKI-valid-only prefix lists for routers are on asn.ipinfo.app.
RPKI · ASPA
Declared transit providers
This network has signed an ASPA record naming its transit providers. Each is compared against the upstreams observed in routing paths.
| AS | Network | ASPA | Routing paths |
|---|---|---|---|
| AS11351 | Charter Communications Inc | Declared | Observed |
| AS33422 | New England Telehealth Consortium | Declared | Observed |
An observed upstream that is not declared is not necessarily a leak: our upstream inference cannot tell a transit provider from a peer seen in the same position. A declared provider that is never observed is usually a backup path.
IRR
Registered route objects
Route objects naming AS54471 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 |
|---|---|---|---|---|---|
| 216.105.192.0/21 | ARIN | Androscoggin Valley Hospital | MNT-AVH-11 | 2012-04-02 | Not announced |
| 216.105.192.0/21 | RADB | RR-BC-Androscoggin Valley Hospital-Portland | MAINT-RR | 2023-11-13 | Not announced |
| 216.105.200.0/21 | ARIN | Androscoggin Valley Hospital | MNT-AVH-11 | 2012-04-02 | Not announced |
| 216.105.200.0/21 | RADB | RR-BC-Androscoggin Valley Hospital-Portland | MAINT-RR | 2023-11-13 | Not announced |
| 216.105.192.0/20 | ARIN | Androscoggin Valley Hospital | MNT-AVH-11 | 2026-11-03 | Announced |
| 216.105.192.0/20 | RADB | RR-BC-Androscoggin Valley Hospital-Portland | MAINT-RR | 2023-11-13 | Announced |
IRR
AS-sets
The as-set is what upstreams expand to build this network's customer filter. Sets that list AS54471 directly show who expects to carry it.
| AS-set | Where | Relationship |
|---|---|---|
AS-CHTR-SYNC | RADB | Lists AS54471 as a direct member |
AS-HURRICANE | RADB | Lists AS54471 as a direct member |
AS-RR-BIZ | RADB | Lists AS54471 as a direct member |
AS-TVC | ARIN | Lists AS54471 as a direct member |
AS-XO-B | ARIN | Lists AS54471 as a direct member |
AS13536:AS-CONE | ARIN | Lists AS54471 as a direct member |
AS3770:AS-ALL | ARIN | Lists AS54471 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.