asn.dev

Autonomous system

AS23661 CLARA-AS-AP CLARA, Inc.

Hosting APNIC

IPv4 addresses 24.83K 11 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly JP
Exchanges 1 recorded by PCH
Upstreams 5 0 downstream
Flagged prefixes 0 none

Summary

CLARA, Inc.

Japan · AI-generated

hosting dedicated japan business

The AS handle CLARA-AS-AP is held by CLARA, Inc.

What it's used for

  • The address space carries dedicated server infrastructure, evidenced by reverse DNS entries such as t247-255.dedicated.clara.ne.jp and t103-255.dedicated.clara.ne.jp.
  • The network announces 24832 IPv4 addresses across 11 prefixes and 1 IPv6 prefix, maintaining 13 observed neighbours, a ratio consistent with a hosting provider serving dedicated customers.

Notable

  • All registrants in the RDAP data are CLARA, Inc., with netnames including CLARA-NET, CLARA-TOKYO, and CLARA-AS-AP, fully aligning with the AS holder.
  • The inventory consists of multiple /20 and /21 blocks in Japan, indicating a substantial and segmented address estate for its hosting operations.

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

Recorded at 1 exchange in 1 country, largest first.

ExchangeLocationTheir address
JPIX TokyoTokyo, Japan210.171.224.121

Transit providers

5 upstream, 0 downstream and 9 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS15830Equinix (EMEA) Acquisition Enterprises B.V.221
AS2518BIGLOBE Inc.194
AS4637Telstra Global184
AS6939Hurricane Electric LLC117
AS24482SG.GS13

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-15, 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 11 prefixes · 24.83K addresses IPv6 1 prefixes

CountryNamePrefixes
JPJapan12

Registry

Allocation record

APNIC · via Atlas (registry + RDAP)
Registry
APNIC
Handle
AS23661
Registry name
CLARA-AS-AP
Registrant
CLARA, Inc.
Abuse contact
abuse@clara.ad.jp
Registered
2008-09-04
Last changed
2024-05-22
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 13 with no ROA
ROAs
0 authorising AS23661
ASPA
no ASPA record
IRR
100% registered · 13 of 13 announcements
Route objects
110 naming AS23661

Reputation

Classification and threat

Hosting Datacenter or cloud provider. Addresses are servers, not people.

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 1,782 prefixes, as published 2026-10-16. 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