Routing security
AS397797 CITYOFMARSHALL-01 - City of Marshall
Unclassified ARIN
Announcements
What this network originates
Every prefix observed with AS397797 as its origin, checked against RPKI and the IRR. Problems sort first.
| Prefix | RPKI | IRR | Vantage points |
|---|---|---|---|
| 23.247.148.0/22 | RPKI valid | IRR | 51 |
| 149.36.242.0/23 | RPKI valid | IRR | 50 |
| 149.36.243.0/24 | RPKI valid | IRR covering | 50 |
| 154.21.208.0/23 | RPKI valid | IRR | 50 |
| 205.137.240.0/22 | RPKI valid | IRR | 50 |
| 205.137.242.0/24 | RPKI valid | IRR covering | 50 |
| 205.137.243.0/24 | RPKI valid | IRR covering | 50 |
| 209.209.80.0/22 | RPKI valid | IRR | 50 |
| 2605:6640::/32 | RPKI valid | IRR | 28 |
RPKI · ROAs
Route origin authorisations
Signed statements by address holders that AS397797 may originate these prefixes, up to the maximum length shown.
| Prefix | Max length | Trust anchor |
|---|---|---|
| 23.247.148.0/22 | /24 | ARIN |
| 149.36.242.0/23 | /24 | ARIN |
| 154.21.208.0/23 | /24 | ARIN |
| 205.137.240.0/22 | /24 | ARIN |
| 209.209.80.0/22 | /24 | ARIN |
| 2605:6640::/32 | /48 | 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 |
|---|---|---|---|
| AS174 | Cogent Communications, LLC | Declared | Observed |
| AS63251 | Metro Wireless International, Inc. | 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 AS397797 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 |
|---|---|---|---|---|---|
| 23.247.148.0/22 | ARIN | Marshall FiberNet | MNT-CM-1544 | 2026-02-26 | Announced |
| 149.36.242.0/23 | ARIN | Route Registered for Cogent Communications Customer - City of Marshall/Marshall Fibernet | MNT-COGC | 2026-02-25 | Announced |
| 154.21.208.0/23 | ARIN | Route Registered for Cogent Communications Customer - City of Marshall/Marshall Fibernet | MNT-COGC | 2026-09-17 | Announced |
| 205.137.240.0/22 | ARIN | Marshall FiberNet | MNT-CM-1544 | 2026-02-26 | Announced |
| 209.209.80.0/22 | ARIN | Marshall FiberNet | MNT-CM-1544 | 2026-02-26 | Announced |
| 2605:6640::/32 | ARIN | City of Marshall | MNT-CM-1544 | 2026-02-26 | Announced |
IRR
AS-sets
The as-set is what upstreams expand to build this network's customer filter. Sets that list AS397797 directly show who expects to carry it.
| AS-set | Where | Relationship |
|---|---|---|
AS237:AS-CUSTOMERS | RADB | Lists AS397797 as a direct member |
AS53292:AS-METRO | ARIN | Lists AS397797 as a direct member |
AS63251:AS-DOWNSTREAMS | ARIN | Lists AS397797 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.