asn.dev

Autonomous system

AS23795 FURUKAWA Fitec Corp.

Unclassified ARIN

IPv4 addresses 4.10K 2 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

FITEC Corporation

Japan · AI-generated

business corporate japan network

AS23795 is operated by FITEC Corporation, a Japanese IT services company spun off from Furukawa Electric.

What it's used for

  • The address space is registered under the netname JPNIC-NET-JP-ERX with the Japan Network Information Center, indicating standard corporate allocation.
  • The AS announces 4096 IPv4 addresses across 2 prefixes (158.202.40.0/21 and 158.202.152.0/21) and maintains 2 observed neighbours, a ratio consistent with an internal corporate estate rather than a transit or access provider.

Notable

  • Registrants for both announced prefixes are listed as IRT-JPNIC-JP (Japan Network Information Center), which aligns with the AS holder's location and typical JPNIC allocation practices.
  • FITEC Corporation was established in 1987 as the Information Systems Division of Furukawa Electric Co., Ltd., before becoming an independent entity focused on software development and network system maintenance.
  • The inventory consists of two contiguous /21 blocks with no IPv6 prefixes announced, reflecting a focused IPv4-only corporate footprint.

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
AS10010TOKAI Communications Corporation175
AS4725SoftBank Corp.174

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-13, 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 2 prefixes · 4.10K addresses IPv6 0 prefixes

CountryNamePrefixes
JPJapan2

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS23795
Registry name
FURUKAWA
Abuse contact
hostmaster@nic.ad.jp
Registered
2003-06-16
Last changed
2006-02-04
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 6 with no ROA
ROAs
0 authorising AS23795
ASPA
no ASPA record
IRR
100% registered · 6 of 6 announcements
Route objects
6 naming AS23795

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: 436 networks and 1,771 prefixes, as published 2026-10-13. 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