asn.dev

Routing security

AS4605 ERX-HKBUNET Hong Kong Baptist University

Education ARIN

RPKI valid 13% 2 of 15 announcements
RPKI invalid 0 none
No ROA 13 not covered by any ROA
IRR registered 93% 1 missing · 0 other origin
ROAs 2 authorising this AS

Announcements

What this network originates

15 observed

Every prefix observed with AS4605 as its origin, checked against RPKI and the IRR. Problems sort first.

PrefixRPKIIRRVantage points
203.188.112.64/28No ROANo IRR1
175.159.144.0/21No ROAIRR54
175.159.152.0/22No ROAIRR54
175.159.154.0/24No ROAIRR54
175.159.154.0/27No ROAIRR covering2
175.159.154.192/27No ROAIRR covering2
175.159.155.0/24No ROAIRR54
175.159.156.0/23No ROAIRR54
175.159.232.0/22No ROAIRR54
175.159.236.0/22No ROAIRR54
202.125.240.0/21No ROAIRR54
202.125.248.0/22No ROAIRR54
2001:ce0:6::/48No ROAIRR35
158.182.0.0/16RPKI validIRR54
158.182.84.0/24RPKI validIRR55

RPKI · ROAs

Route origin authorisations

2 ROAs

Signed statements by address holders that AS4605 may originate these prefixes, up to the maximum length shown.

PrefixMax lengthTrust anchor
158.182.0.0/16/16APNIC
158.182.84.0/24/24APNIC

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

RPKI · ASPA

Declared transit providers

3 declared

This network has signed an ASPA record naming its transit providers. Each is compared against the upstreams observed in routing paths.

ASNetworkASPARouting paths
AS3662Joint Universities Computer Centre LimitedDeclaredObserved
AS10103HK Broadband Network Ltd.DeclaredObserved
AS137207Joint Universities Computer Centre LimitedDeclaredObserved

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

25 objects · 6 not announced

Route objects naming AS4605 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
175.159.144.0/24RADBHKT (Customer Route)MAINT-AS45152023-11-13Not announced
175.159.151.0/24RADBHKT (Customer Route)MAINT-AS45152023-11-13Not announced
175.159.156.0/24NTTCOMHKBU (Customer Route)MAINT-AS93812013-06-25Not announced
175.159.157.0/24NTTCOMHKBU (Customer Route)MAINT-AS93812013-06-25Not announced
175.159.232.0/21NTTCOMHKBU (Customer Route)MAINT-AS93812013-06-25Not announced
2001:ce0:2600::/40NTTCOMHKBUMAINT-AS93812012-04-24Not announced
158.182.0.0/16APNICHKBU (route object)MAINT-HK-BAPTISTCOL2026-09-02Announced
158.182.0.0/16NTTCOMCMI IP TransitMAINT-CMI-INT-HK2018-01-08Announced
158.182.0.0/16RADBPACNET (proxy-registered route object)MAINT-AS46372023-11-13Announced
158.182.84.0/24APNICHong Kong Baptist UniversityMAINT-HK-BAPTISTCOL2026-09-01Announced
175.159.144.0/21NTTCOMHKBU (Customer Route)MAINT-AS93812013-07-16Announced
175.159.144.0/21RADBPACNET (proxy-registered route object)MAINT-AS46372023-11-13Announced
175.159.152.0/22NTTCOMHKBU (Customer Route)MAINT-AS93812013-07-16Announced
175.159.152.0/22RADBPACNET (proxy-registered route object)MAINT-AS46372023-11-13Announced
175.159.154.0/24RADBHKBNMAINT-AS47662023-11-13Announced
175.159.155.0/24NTTCOMHKBU (Customer Route)MAINT-AS93812013-07-16Announced
175.159.155.0/24RADBHKBNMAINT-AS47662023-11-13Announced
175.159.156.0/23NTTCOMHKBU (Customer Route)MAINT-AS93812013-06-25Announced
175.159.156.0/23RADBPACNET (proxy-registered route object)MAINT-AS46372023-11-13Announced
175.159.232.0/22RADBHKT (Customer Route)MAINT-AS45152023-11-13Announced
175.159.236.0/22RADBHKT (Customer Route)MAINT-AS45152023-11-13Announced
202.125.240.0/21RADBProxy-registered route objectMAINT-AS34912025-03-28Announced
202.125.248.0/22RADBProxy-registered route objectMAINT-AS34912025-03-28Announced
2001:ce0:6::/48NTTCOMHKBUMAINT-AS93812012-04-24Announced
2001:ce0:6::/48RADBHKBN(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 AS4605 directly show who expects to carry it.

AS-setWhereRelationship
AS-ANC-CUSTOMER-PROXY-REGISTERRADBLists AS4605 as a direct member
AS-ARBINET-LAX-BUYERSRIPELists AS4605 as a direct member
AS-CTBC-TOOLS-6RADBLists AS4605 as a direct member
AS-CTI-TELECOMRADBLists AS4605 as a direct member
AS-HKBN-TRANSITRADBLists AS4605 as a direct member
AS-HKT-AS4515RADBLists AS4605 as a direct member
AS-HKT-NETVIGATORRADBLists AS4605 as a direct member
AS-HKTCUSTOMERAPNICLists AS4605 as a direct member
AS-HURRICANEV6RADBLists AS4605 as a direct member
AS-HWNG-DOWNSTREAMSALTDBLists AS4605 as a direct member
AS-KDDRADBLists AS4605 as a direct member
AS-KDDCUSTOMER2RADBLists AS4605 as a direct member
AS-KDDI6RADBLists AS4605 as a direct member
AS-KORNETBGPRADBLists AS4605 as a direct member
AS-NEXUSGUARD-CLIENTSRADBLists AS4605 as a direct member
AS-PACNET-CUSTOMER-PROXY-REGISTERRADBLists AS4605 as a direct member
AS-TELSTRA-INTL-CUSTOMERSRADBLists AS4605 as a direct member
AS-TELSTRA-INTL-CUSTOMERS-4637RADBLists AS4605 as a direct member
AS-TMHKNTTCOMLists AS4605 as a direct member
AS-XO-BARINLists AS4605 as a direct member
AS137207:AS-HARNET-REAPNICLists AS4605 as a direct member
AS137207:AS-HARNET-RERADBLists AS4605 as a direct member
AS20965:AS-FROM-TEIN-TO-GEANTRIPELists AS4605 as a direct member
AS293:AS-FROM-SINGAREN-TO-ESNETARINLists AS4605 as a direct member
AS3491:AS-CUSTOMERS-APRADBLists AS4605 as a direct member
AS3662:AS-HARNETAPNICLists AS4605 as a direct member
AS58453:AS-ASIAASCUSTAPNICLists AS4605 as a direct member
AS58453:AS-ASIAASCUSTRADBLists AS4605 as a direct member
AS58453:AS-ASIATESTAPNICLists AS4605 as a direct member
AS9269:AS-HKBN-TRANSITNTTCOMLists AS4605 as a direct member
AS9269:AS-HKBN-TRANSITRADBLists AS4605 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.