asn.dev

Autonomous system

AS18075 HICAT Chupicom Inc.

Unclassified ARIN

IPv4 addresses 12.29K 3 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly JP
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

HICAT

Japan · AI-generated

residential isp japan access

HICAT is operated by Chupicom Inc., a Japanese internet service provider.

What it's used for

  • The address space carries residential customer connections, evidenced by reverse DNS entries like ca20000.hicat.ne.jp and ca164000.hicat.ne.jp which follow a standard consumer IP naming convention.
  • The AS announces 12,288 IPv4 addresses across 3 prefixes while maintaining only 1 observed neighbour, a ratio characteristic of an access network serving end-users rather than a transit provider.

Notable

  • All three announced prefixes are registered to the Japan Network Information Center (JPNIC) with netnames CHUPICOM-NET and CCV-CIDR-BLK-JP, aligning with the operator's identity.
  • The inventory consists of three /20 blocks, providing a contiguous and modest address space typical for a regional ISP.

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

1 upstream, 0 downstream and 1 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS18283Chupicom Inc.1,206

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-24, 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 3 prefixes · 12.29K addresses IPv6 0 prefixes

CountryNamePrefixes
JPJapan3

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS18075
Registry name
HICAT
Abuse contact
hostmaster@nic.ad.jp
Registered
2001-12-27
Last changed
2023-01-16
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 21 with no ROA
ROAs
0 authorising AS18075
ASPA
no ASPA record
IRR
100% registered · 21 of 21 announcements
Route objects
24 naming AS18075

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: 442 networks and 1,779 prefixes, as published 2026-10-24. 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