asn.dev

Autonomous system

AS37888 HORIBA-NET - HORIBA, Ltd.

Unclassified AFRINIC

IPv4 addresses 768 3 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly JP
Exchanges 0 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

Horiba

Japan · AI-generated

business corporate japan instruments

HORIBA-NET is the autonomous system for Horiba, Ltd.

What it's used for

  • The space carries corporate infrastructure for a precision instrument manufacturer, identified by the netname HORIBANET-CIDR-BLK-JP across all announced prefixes.
  • The AS announces 768 IPv4 addresses across 3 prefixes with 2 observed neighbours, indicating a small, self-contained internal network rather than a transit or access provider.
  • Traffic from this AS consists of office workers, R&D facilities, and web endpoints for a company that manufactures automotive emission measurement systems, environmental instruments, and medical diagnostic analyzers.

Notable

  • Registrants for all prefixes are listed as Japan Network Information Center, consistent with the Japanese corporate holder.
  • The address inventory is finely subdivided into three /24 blocks, reflecting site-by-site segmentation typical of a large internal corporate estate.

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 2 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS2516KDDI CORPORATION165
AS4725SoftBank Corp.9

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-10, 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 · 768 addresses IPv6 0 prefixes

CountryNamePrefixes
JPJapan3

Registry

Allocation record

AFRINIC · via Atlas (registry + RDAP)
Registry
AFRINIC
Handle
AS37888
Registry name
HORIBA-NET
Abuse contact
hostmaster@nic.ad.jp
Registered
2006-01-30
Last changed
2006-04-20
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 3 with no ROA
ROAs
0 authorising AS37888
ASPA
no ASPA record
IRR
100% registered · 3 of 3 announcements
Route objects
5 naming AS37888

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: 454 networks and 1,847 prefixes, as published 2026-11-11. 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