Autonomous system profile

Review registration details, announced prefixes, network relationships and historical snapshots.

AS55390

Announcement observedAPNIC

TUSNET

This profile is assembled from CHA.LA's normalized registration, routing and observation snapshots.

Last active10/5/2026, 05:43:46Snapshot expired

View network topology RDAP registration

ASN: AS55390
Registration country: Japan
Name: TUSNET
Abbreviation: TUSNET
Registration date: Not recorded
Status: Announcement observed
RIR: APNIC

Network relationships and announced prefixes

ASN / prefix	Description / organization	Geographic scope	First seen	Last active	IPv4	IPv6	Status
133.31.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/21/2026, 00:00:00	10/19/2026, 08:00:00	✓	×	Currently valid
133.31.0.0/17BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/21/2026, 00:00:00	10/19/2026, 08:00:00	✓	×	Currently valid
133.31.128.0/17BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/21/2026, 00:00:00	10/19/2026, 08:00:00	✓	×	Currently valid

BGP prefixes have no geographic country; the column is marked not applicable.

Registration and sources

Organization: TUSNET
RIR: APNIC
Registration country: Japan
Registration date: Not recorded
Abuse contact: Not recorded

Snapshot trend

10/5/2026, 05:43:463 v41 v62 Upstream · 0 Uncertain

ASN route snapshotThis page reads collected ASN, prefix, relationship and history data. External interfaces are used for initial collection and scheduled refreshes.Source keys: cha-la-external-routing · iana-rdap-asn-bootstrap · rir-rdap-asn