163.19.128.0/20 Department of Education, Hsinchu City
Announced by AS18043 Department of Education, Hsinchu City. RPKI valid Seen by 3 of our 5 looking glass sessions.
Summary
What the table says about 163.19.128.0/20
Prefix
Origin
AS18043 HCCG-AS
RPKI
RPKI valid
Size
4,096 addresses
Less specific
More specifics
0
IRR route objects
0 exact, 5 covering
In RouteViews
2026-10-16 00:02 UTC
Paths
How 163.19.128.0/20 is reached
Every path our looking glass collectors hold for this exact prefix. Open one for its attributes, or see them all side by side in the looking glass.
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 36295 6939 18043
| Origin | AS18043 Department of Education, Hsinchu City |
| Origin code | IGP |
| Communities | 903:100 903:900 |
| Updated | 8d 8h ago |
RPKI
Route origin authorizations
Covered by a ROA authorizing AS18043 to originate 163.19.128.0/20 up to /24. Validate another origin.
| ROA prefix | Max length | Authorized origin | Trust anchor |
|---|---|---|---|
| 163.19.128.0/20 | /24 | AS18043 HCCG-AS | APNIC |
| 163.19.0.0/16 | /16 | AS9916 NCTU-TW | APNIC |
| 163.16.0.0/13 | /19 | AS1659 ERX-TANET-ASN1 | APNIC |
IRR
Route objects
Registered in the IRR for this prefix and the ones covering it. Look it up live.
| Route | Origin | Source | Description | Maintained by |
|---|---|---|---|---|
| 163.19.0.0/16 covering | AS9916 NCTU-TW | NTTCOM | NCTU (proxy-registered route object) | MAINT-ASNET |
| 163.19.0.0/16 covering | AS9505 TWGATE-AP | REACH | REACH (Customer Route) | MAINT-REACH-NOC |
| 163.16.0.0/13 covering | AS1659 ERX-TANET-ASN1 | NTTCOM | TANET (proxy-registered route object) | MAINT-ASNET |
| 163.16.0.0/13 covering | AS1659 ERX-TANET-ASN1 | RADB | PACNET (proxy-registered route object) | MAINT-AS4637 |
| 163.16.0.0/13 covering | AS9505 TWGATE-AP | REACH | REACH (Customer Route) | MAINT-REACH-NOC |
Less specific
Covering prefixes
Announced prefixes that contain this one, most specific first.