asn.dev

Routing security

AS18183 NCREE National Center for Research on Earthquake Engineering

Unclassified APNIC

RPKI valid 100% 10 of 10 announcements
RPKI invalid 0 none
No ROA 0 not covered by any ROA
IRR registered 100% 0 missing · 0 other origin
ROAs 5 authorising this AS

Announcements

What this network originates

10 observed

Every prefix observed with AS18183 as its origin, checked against RPKI and the IRR. Problems sort first.

PrefixRPKIIRRVantage points
61.56.0.0/20RPKI validIRR55
61.56.4.0/24RPKI validIRR54
61.56.8.0/21RPKI validIRR55
103.189.132.0/23RPKI validIRR51
202.5.12.0/22RPKI validIRR54
2001:4500::/32RPKI validIRR34
2001:4500:1100::/40RPKI validIRR covering34
2001:4500:1100::/41RPKI validIRR covering34
2001:4500:1180::/41RPKI validIRR covering34
2400:85a0::/32RPKI validIRR34

RPKI · ROAs

Route origin authorisations

5 ROAs

Signed statements by address holders that AS18183 may originate these prefixes, up to the maximum length shown.

PrefixMax lengthTrust anchor
61.56.0.0/20/24APNIC
103.189.132.0/23/23APNIC
202.5.12.0/22/22APNIC
2001:4500::/32/64APNIC
2400:85a0::/32/32APNIC

ROA-based and RPKI-valid-only prefix lists for routers are on asn.ipinfo.app.

RPKI · ASPA

Declared transit providers

No ASPA record This network has not published an ASPA object. ASPA lets a network sign the list of its transit providers, so routers can reject paths that route through anyone else (route leaks). Only a few thousand networks publish one so far, so its absence is normal.

IRR

Registered route objects

14 objects · 1 not announced

Route objects naming AS18183 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.

PrefixSourceDescriptionMaintainerChangedRouting
203.5.14.0/23RADBNational Center for Research on Earthquake Engineering (NCREE)MAINT-AS177092023-11-13Not announced
61.56.0.0/20NTTCOMNCREE (proxy-registered route object)MAINT-ASNET2005-05-02Announced
61.56.0.0/20RADBPACNET (proxy-registered route object)MAINT-AS46372023-11-13Announced
61.56.4.0/24RADBNCREEMAINT-NCREE-NET2026-01-08Announced
61.56.8.0/21RADBNational Center for Research on Earthquake Engineering (NCREE)MAINT-AS177092023-11-13Announced
103.189.132.0/23APNICNational Center for Research on Earthquake EngineeringMAINT-TW-TWNIC2025-12-25Announced
103.189.132.0/23NTTCOMProxy-registered route object(Customer)MAINT-AS99242025-12-24Announced
103.189.132.0/23RADBProxy-registered route object(Customer)MAINT-AS99242026-04-17Announced
202.5.12.0/22NTTCOMNCREE (proxy-registered route object)MAINT-ASNET2005-05-02Announced
202.5.12.0/22RADBPACNET (proxy-registered route object)MAINT-AS46372023-11-13Announced
2001:4500::/32RADBNCREEMAINT-NCREE-NET2026-01-08Announced
2400:85a0::/32APNICNational Center for Research on Earthquake EngineeringMAINT-TW-TWNIC2025-12-26Announced
2400:85a0::/32NTTCOMProxy-registered route object(Customer)MAINT-AS99242025-12-24Announced
2400:85a0::/32RADBProxy-registered route object(Customer)MAINT-AS99242026-04-17Announced

IRR

AS-sets

The as-set is what upstreams expand to build this network's customer filter. Sets that list AS18183 directly show who expects to carry it.

AS-setWhereRelationship
AS-63529-AS-IMPORT-AS9505APNICLists AS18183 as a direct member
AS-ASNETNTTCOMLists AS18183 as a direct member
AS-EBIX-TRANSITRADBLists AS18183 as a direct member
AS-HURRICANEV6RADBLists AS18183 as a direct member
AS-TRANSROUTE-SPECRIPELists AS18183 as a direct member
AS-TWIGRADBLists AS18183 as a direct member
AS18183:AS-CONERADBLists AS18183 as a direct member
AS20965:AS-FROM-TEIN-TO-GEANTRIPELists AS18183 as a direct member
AS293:AS-FROM-SINGAREN-TO-ESNETARINLists AS18183 as a direct member
AS63529:AS-63529-AS-IMPORT-AS9505APNICLists AS18183 as a direct member
AS9264:AS-PARTNER-AAPNICLists AS18183 as a direct member

RPKI from rpki-client, validated 2026-10-12 12:10 UTC. IRR from ARIN, RADB, RIPE, ALTDB, APNIC, LACNIC, NTTCOM, AFRINIC, collected 2026-10-12. Cross-check on bgp.he.net.