Routing security
AS141753 CBCTIL-AS-AP CBC TECH INTERNATIONAL LTD.
Unclassified APNIC
Announcements
What this network originates
Every prefix observed with AS141753 as its origin, checked against RPKI and the IRR. Problems sort first.
| Prefix | RPKI | IRR | Vantage points |
|---|---|---|---|
| 38.98.133.0/24 | RPKI valid | IRR | 51 |
| 103.21.56.0/24 | RPKI valid | IRR | 51 |
| 103.21.57.0/24 | RPKI valid | IRR | 51 |
| 103.163.165.0/24 | RPKI valid | IRR | 52 |
| 2407:2a40::/32 | RPKI valid | IRR | 33 |
RPKI · ROAs
Route origin authorisations
Signed statements by address holders that AS141753 may originate these prefixes, up to the maximum length shown.
| Prefix | Max length | Trust anchor |
|---|---|---|
| 38.98.133.0/24 | /24 | ARIN |
| 103.21.56.0/23 | /24 | APNIC |
| 103.163.165.0/24 | /24 | APNIC |
| 2407:2a40::/32 | /32 | APNIC |
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 |
|---|---|---|---|
| AS2914 | NTT America, Inc. | Declared | Observed |
| AS131314 | CBC Tech International Limited | 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 AS141753 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 |
|---|---|---|---|---|---|
| 103.21.56.0/23 | APNIC | CBC TECH INTERNATIONAL LTD. | MAINT-CBCTIL-SG | 2026-07-28 | Not announced |
| 38.98.133.0/24 | ARIN | Route Registered for Cogent Communications Customer - CBC TECH INTERNATIONAL LTD. | MNT-COGC | 2026-01-07 | Announced |
| 103.21.56.0/24 | APNIC | CBC TECH INTERNATIONAL LTD. | MAINT-CBCTIL-SG | 2026-07-28 | Announced |
| 103.21.57.0/24 | APNIC | CBC TECH INTERNATIONAL LTD. | MAINT-CBCTIL-SG | 2026-07-28 | Announced |
| 103.163.165.0/24 | APNIC | CBC Tech International Ltd | MAINT-CBCL-SG | 2026-04-29 | Announced |
| 2407:2a40::/32 | APNIC | China Broadband Communications Ltd | MAINT-CBCL-SG | 2023-04-25 | Announced |
IRR
AS-sets
The as-set is what upstreams expand to build this network's customer filter. Sets that list AS141753 directly show who expects to carry it.
| AS-set | Where | Relationship |
|---|---|---|
AS-CBCCOM131314 | APNIC | Lists AS141753 as a direct member |
AS-HGC-INTL | RADB | Lists AS141753 as a direct member |
AS-HURRICANEV6 | RADB | Lists AS141753 as a direct member |
AS-TRANSROUTE-SPEC | RIPE | Lists AS141753 as a direct member |
AS141753:AS-SET | APNIC | Lists AS141753 as a direct member |
AS45250:AS-JPIX | APNIC | Lists AS141753 as a direct member |
AS45250:AS-JPIX | RADB | Lists AS141753 as a direct member |
AS55888:AS-NTT | RADB | Lists AS141753 as a direct member |
RPKI from rpki-client, validated 2026-10-20 11:55 UTC. IRR from ARIN, RADB, RIPE, ALTDB, APNIC, LACNIC, NTTCOM, AFRINIC, collected 2026-10-20. Cross-check on bgp.he.net.