asn.dev

Autonomous system

AS55911 kazukichi - kazukichi

Unclassified APNIC

IPv4 addresses 512 1 prefixes
IPv6 prefixes 12 counted as prefixes, not addresses
Countries 1 mostly JP
Exchanges 0 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

Kazukichi

Japan · AI-generated

education research japan

The AS handle KAZUKICHI is held by kazukichi.

What it's used for

  • The space carries a single IPv4 block with netname kazukichi-CIDR-BLK-JP and a set of IPv6 prefixes under 2401:98a0::/40.
  • With 512 IPv4 addresses and 12 IPv6 prefixes announced against only 2 observed neighbours, the inventory suggests a small, self-contained network rather than a transit provider.
  • PeeringDB classifies the operator as Educational/Research, indicating the traffic likely originates from academic or research activities within Japan.

Notable

  • The RDAP registrant for the IPv4 space is Japan Network Information Center (JPNIC), which is consistent with the AS holder operating within the Japanese registry ecosystem.
  • The address inventory is compact, consisting of one contiguous IPv4 /23 and a hierarchical set of IPv6 allocations.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.

Interconnection

Peering at a glance

Full topology · Graph

Internet exchanges

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

2 upstream, 0 downstream and 4 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS63780dual&Co. Inc.175
AS63773dual&Co. Inc.152

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-01, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 1 prefixes · 512 addresses IPv6 12 prefixes

CountryNamePrefixes
JPJapan13

Registry

Allocation record

APNIC · via Atlas (registry + RDAP)
Registry
APNIC
Handle
AS55911
Registry name
kazukichi
Registered
2010-11-29
Last changed
2024-05-24
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 8 valid, 0 with no ROA
ROAs
7 authorising AS55911
ASPA
no ASPA record
IRR
0% registered · 0 of 8 announcements
Route objects
0 naming AS55911

Reputation

Classification and threat

Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.

Spamhaus DROP

Not on ASN-DROP The network as a whole is not listed.

No DROP prefixes None of its announced space is on the DROP prefix list.

Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 447 networks and 1,843 prefixes, as published 2026-11-02. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.

FBI IC3

No IC3 indicators Nothing from the FBI IC3 feed.

IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.

Elsewhere

Cross-check