Routing security
AS402935 CITY-OF-BELGRADE-MT - City
Unclassified ARIN
Announcements
What this network originates
Every prefix observed with AS402935 as its origin, checked against RPKI and the IRR. Problems sort first.
| Prefix | RPKI | IRR | Vantage points |
|---|---|---|---|
| 23.163.20.0/24 | RPKI valid | IRR | 51 |
| 2620:4c:8080::/48 | RPKI valid | IRR | 29 |
RPKI · ROAs
Route origin authorisations
Signed statements by address holders that AS402935 may originate these prefixes, up to the maximum length shown.
| Prefix | Max length | Trust anchor |
|---|---|---|
| 23.163.20.0/24 | /24 | ARIN |
| 2620:4c:8080::/48 | /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 |
|---|---|---|---|
| AS21947 | Blackfoot Telephone Cooperative, Inc. | Declared | Observed |
| AS33588 | Charter Communications LLC | 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 AS402935 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 |
|---|---|---|---|---|---|
| 23.163.20.0/24 | ARIN | City of Belgrade | MNT-CB-1547 | 2026-10-05 | Announced |
| 23.163.20.0/24 | RADB | CITY OF BELGRADE - Central - 60252 | MAINT-CHTR-WD | 2026-09-14 | Announced |
| 2620:4c:8080::/48 | ARIN | City of Belgrade | MNT-CB-1547 | 2026-10-05 | Announced |
| 2620:4c:8080::/48 | RADB | CITY OF BELGRADE - Central - 60252 | MAINT-CHTR-WD | 2026-09-14 | Announced |
IRR
AS-sets
The as-set is what upstreams expand to build this network's customer filter. Sets that list AS402935 directly show who expects to carry it.
| AS-set | Where | Relationship |
|---|---|---|
AS-BLACKFOOT | RADB | Lists AS402935 as a direct member |
AS-CHTR-BB | RADB | Lists AS402935 as a direct member |
AS-HURRICANE | RADB | Lists AS402935 as a direct member |
AS-HURRICANEV6 | RADB | Lists AS402935 as a direct member |
RPKI from rpki-client, validated 2026-10-18 12:08 UTC. IRR from ARIN, RADB, RIPE, ALTDB, APNIC, LACNIC, NTTCOM, AFRINIC, collected 2026-10-18. Cross-check on bgp.he.net.