asn.dev

Routing security

AS23808 TOSHIMA-NET TOSHIMA CABLE NETWORK CO.,LTD

Unclassified ARIN Cable/DSL/ISP

RPKI valid 100% 4 of 4 announcements
RPKI invalid 0 none
No ROA 0 not covered by any ROA
IRR registered 100% 0 missing · 0 other origin
ROAs 4 authorising this AS

Announcements

What this network originates

4 observed

Every prefix observed with AS23808 as its origin, checked against RPKI and the IRR. Problems sort first.

PrefixRPKIIRRVantage points
103.40.128.0/22RPKI validIRR52
202.140.192.0/19RPKI validIRR53
219.100.132.0/22RPKI validIRR52
220.152.96.0/20RPKI validIRR53

RPKI · ROAs

Route origin authorisations

4 ROAs

Signed statements by address holders that AS23808 may originate these prefixes, up to the maximum length shown.

PrefixMax lengthTrust anchor
103.40.128.0/22/32APNIC
202.140.192.0/19/32APNIC
219.100.132.0/22/32APNIC
220.152.96.0/20/32APNIC

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

16 objects · 8 not announced

Route objects naming AS23808 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
103.40.128.0/23NTTCOMTOSHIMA CABLE NETWORK CO.,LTDMAINT-AS238082021-02-02Not announced
103.40.130.0/23NTTCOMTOSHIMA CABLE NETWORK CO.,LTDMAINT-AS238082021-02-02Not announced
202.140.192.0/20NTTCOMTOSHIMA CABLE NETWORK CO.,LTDMAINT-AS238082006-02-22Not announced
202.140.208.0/20NTTCOMTOSHIMA CABLE NETWORK CO.,LTDMAINT-AS238082006-02-22Not announced
219.100.132.0/23NTTCOMTOSHIMA CABLE NETWORK CO.,LTDMAINT-AS238082021-02-02Not announced
219.100.134.0/23NTTCOMTOSHIMA CABLE NETWORK CO.,LTDMAINT-AS238082021-02-02Not announced
220.152.96.0/21NTTCOMTOSHIMA CABLE NETWORK CO.,LTDMAINT-AS238082006-12-20Not announced
220.152.104.0/21NTTCOMTOSHIMA CABLE NETWORK CO.,LTDMAINT-AS238082006-12-20Not announced
103.40.128.0/22NTTCOMTOSHIMA CABLE NETWORK CO.,LTDMAINT-AS238082014-10-22Announced
103.40.128.0/22RADBTOSHIMA CABLE NETWORK CO.,LTDMAINT-AS98242026-03-04Announced
202.140.192.0/19NTTCOMTOSHIMA CABLE NETWORK CO.,LTDMAINT-AS238082005-09-22Announced
202.140.192.0/19RADBTOSHIMA CABLE NETWORK CO.,LTDMAINT-AS98242026-03-04Announced
219.100.132.0/22NTTCOMTOSHIMA CABLE NETWORK CO.,LTDMAINT-AS238082014-10-22Announced
219.100.132.0/22RADBTOSHIMA CABLE NETWORK CO.,LTDMAINT-AS98242026-03-04Announced
220.152.96.0/20NTTCOMTOSHIMA CABLE NETWORK CO.,LTDMAINT-AS238082006-12-20Announced
220.152.96.0/20RADBTOSHIMA CABLE NETWORK CO.,LTDMAINT-AS98242026-03-04Announced

IRR

AS-sets

The as-set is what upstreams expand to build this network's customer filter. Sets that list AS23808 directly show who expects to carry it.

AS-setWhereRelationship
AS23808:AS-TOSHIMAPeeringDBDeclared by the operator as its own set
AS-9824TRANSITRADBLists AS23808 as a direct member
AS-9824TRANSIT6RADBLists AS23808 as a direct member
AS-IIJRADBLists AS23808 as a direct member
AS-KDDRADBLists AS23808 as a direct member
AS-OCNNTTCOMLists AS23808 as a direct member
AS-OCNRADBLists AS23808 as a direct member
AS23808:AS-TOSHIMANTTCOMLists AS23808 as a direct member
AS2497:AS-IIJRADBLists AS23808 as a direct member

RPKI from rpki-client, validated 2026-11-01 13:04 UTC. IRR from ARIN, RADB, RIPE, ALTDB, APNIC, LACNIC, NTTCOM, AFRINIC, collected 2026-11-01. Cross-check on bgp.he.net.