asn.dev

Routing security

AS3661 ERX-CUHKNET The Chinese University of Hong Kong

Education APNIC

RPKI valid 0% 0 of 9 announcements
RPKI invalid 0 none
No ROA 9 not covered by any ROA
IRR registered 100% 0 missing · 0 other origin
ROAs 1 authorising this AS

Announcements

What this network originates

9 observed

Every prefix observed with AS3661 as its origin, checked against RPKI and the IRR. Problems sort first.

PrefixRPKIIRRVantage points
103.49.160.0/22No ROAIRR53
123.255.64.0/21No ROAIRR54
137.189.0.0/16No ROAIRR54
137.189.196.0/24No ROAIRR covering55
175.159.224.0/22No ROAIRR53
202.40.216.0/24No ROAIRR53
203.188.64.0/20No ROAIRR54
2001:ce0:3::/48No ROAIRR35
2405:3000::/32No ROAIRR35

RPKI · ROAs

Route origin authorisations

1 ROAs

Signed statements by address holders that AS3661 may originate these prefixes, up to the maximum length shown.

PrefixMax lengthTrust anchor
43.230.116.0/22/22APNIC

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

34 objects · 15 not announced

Route objects naming AS3661 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
43.230.116.0/22APNICThe Chinese University of Hong KongMAINT-CUHKNET-HK2020-08-13Not announced
43.230.116.0/22RADBHKT (Customer Route)MAINT-AS45152023-11-13Not announced
43.252.200.0/22APNICThe Chinese University of Hong KongMAINT-HKIX2020-08-13Not announced
43.252.200.0/22RADBHKT (Customer Route)MAINT-AS45152023-11-13Not announced
103.29.12.0/22APNICThe Chinese University of Hong KongMAINT-CUHKNET-HK2020-08-13Not announced
103.29.12.0/22RADBHKT (Customer Route)MAINT-AS45152023-11-13Not announced
123.255.64.0/19RADBPACNET (proxy-registered route object)MAINT-AS46372023-11-13Not announced
123.255.64.0/20APNICThe Chinese University of Hong KongMAINT-CUHKNET-HK2015-03-23Not announced
123.255.64.0/20NTTCOMCMI IP TransitMAINT-CMI-INT-HK2018-01-08Not announced
123.255.64.0/20RADBNexusguard (Customer Route)MAINT-AS454742023-11-13Not announced
123.255.72.0/21APNICThe Chinese University of Hong KongMAINT-CUHKNET-HK2015-03-23Not announced
123.255.80.0/21APNICThe Chinese University of Hong KongMAINT-CUHKNET-HK2015-03-23Not announced
123.255.80.0/21NTTCOMCMI IP TransitMAINT-CMI-INT-HK2018-01-08Not announced
123.255.80.0/21RADBNexusguard (Customer Route)MAINT-AS454742023-11-13Not announced
137.189.0.0/24RADBPACNET (proxy-registered route object)MAINT-AS46372023-11-13Not announced
103.49.160.0/22APNICThe Chinese University of Hong KongMAINT-CUHKNET-HK2016-01-18Announced
103.49.160.0/22NTTCOMCMI IP TransitMAINT-CMI-INT-HK2018-01-08Announced
103.49.160.0/22RADBNexusguard (Customer Route)MAINT-AS454742023-11-13Announced
123.255.64.0/21APNICThe Chinese University of Hong KongMAINT-CUHKNET-HK2015-03-23Announced
123.255.64.0/21RADBHKBN(customer route)MAINT-AS92692023-11-13Announced
137.189.0.0/16APNICChinese University of Hong Kong (The)MAINT-CUHKNET-HK2022-11-04Announced
137.189.0.0/16NTTCOMCMI IP TransitMAINT-CMI-INT-HK2018-01-08Announced
137.189.0.0/16RADBHKT (Customer Route)MAINT-AS45152023-11-13Announced
175.159.224.0/22NTTCOMCMI IP TransitMAINT-CMI-INT-HK2018-01-08Announced
175.159.224.0/22RADBNexusguard (Customer Route)MAINT-AS454742023-11-13Announced
202.40.216.0/24NTTCOMCMI IP TransitMAINT-CMI-INT-HK2018-01-08Announced
202.40.216.0/24RADBHKT (Customer Route)MAINT-AS45152023-11-13Announced
203.188.64.0/20NTTCOMCMI IP TransitMAINT-CMI-INT-HK2018-01-08Announced
203.188.64.0/20RADBNexusguard (Customer Route)MAINT-AS454742023-11-13Announced
2001:ce0:3::/48NTTCOMproxy route6 registration by AS2914MAINT-NTTCOM-BB2010-12-01Announced
2001:ce0:3::/48RADBHKBN(customer route)MAINT-AS92692023-11-13Announced
2405:3000::/32APNICCUHKNETMAINT-CUHKNET-HK2008-09-04Announced
2405:3000::/32NTTCOMHKBN(customer route)MAINT-HKBN2021-08-06Announced
2405:3000::/32RADBHKBN(customer route)MAINT-AS92692023-11-13Announced

IRR

AS-sets

The as-set is what upstreams expand to build this network's customer filter. Sets that list AS3661 directly show who expects to carry it.

AS-setWhereRelationship
AS-4641NTTNTTCOMLists AS3661 as a direct member
AS-ANC-CUSTOMER-PROXY-REGISTERRADBLists AS3661 as a direct member
AS-BTN-CUSTOMERSRADBLists AS3661 as a direct member
AS-CTBC-TOOLS-6RADBLists AS3661 as a direct member
AS-CTI-TELECOMRADBLists AS3661 as a direct member
AS-HKBN-TRANSITRADBLists AS3661 as a direct member
AS-HKIXRADBLists AS3661 as a direct member
AS-HKT-AS4515RADBLists AS3661 as a direct member
AS-HKT-NETVIGATORRADBLists AS3661 as a direct member
AS-HKTCUSTOMERAPNICLists AS3661 as a direct member
AS-HURRICANEV6RADBLists AS3661 as a direct member
AS-HWNG-DOWNSTREAMSALTDBLists AS3661 as a direct member
AS-KDDRADBLists AS3661 as a direct member
AS-KDDI6RADBLists AS3661 as a direct member
AS-NEXUSGUARD-CLIENTSRADBLists AS3661 as a direct member
AS-PACNET-CUSTOMER-PROXY-REGISTERRADBLists AS3661 as a direct member
AS-TELSTRA-INTL-CUSTOMERS-4637RADBLists AS3661 as a direct member
AS-XO-BARINLists AS3661 as a direct member
AS137207:AS-HARNET-REAPNICLists AS3661 as a direct member
AS137207:AS-HARNET-RERADBLists AS3661 as a direct member
AS20965:AS-FROM-TEIN-TO-GEANTRIPELists AS3661 as a direct member
AS2914:AS-64603-V6NTTCOMLists AS3661 as a direct member
AS293:AS-FROM-SINGAREN-TO-ESNETARINLists AS3661 as a direct member
AS293:AS-FROM-TRANSPAC-TO-ESNETARINLists AS3661 as a direct member
AS3303:AS-SWCMPEERSRIPELists AS3661 as a direct member
AS3491:AS-CUSTOMERS-APRADBLists AS3661 as a direct member
AS3662:AS-HARNETAPNICLists AS3661 as a direct member
AS4641:AS-CUHK-TRANSITAPNICLists AS3661 as a direct member
AS58453:AS-ASIAASCUSTAPNICLists AS3661 as a direct member
AS58453:AS-ASIAASCUSTRADBLists AS3661 as a direct member
AS58453:AS-ASIATESTAPNICLists AS3661 as a direct member
AS9269:AS-HKBN-TRANSITNTTCOMLists AS3661 as a direct member
AS9269:AS-HKBN-TRANSITRADBLists AS3661 as a direct member

RPKI from rpki-client, validated 2026-10-27 12:06 UTC. IRR from ARIN, RADB, RIPE, ALTDB, APNIC, LACNIC, NTTCOM, AFRINIC, collected 2026-10-27. Cross-check on bgp.he.net.