asn.dev

Autonomous system

AS24270 CRC-KCC CRC Solutions Corp.

Hosting ARIN

IPv4 addresses 5.12K 3 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly JP
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

CRC Solutions Corp.

Japan · AI-generated

business japan ipv6

CRC-KCC is the AS handle for CRC Solutions Corp.

What it's used for

  • The address space carries corporate infrastructure, indicated by the netname NVI on the 202.83.144.0/21 block and CRC-KCC-CIDR-BLK-JP on the remaining prefixes.
  • With 5120 IPv4 addresses and 1 IPv6 prefix announced against only 2 observed neighbours, the ratio suggests a limited transit or peering footprint typical of a business network rather than a large access provider.

Notable

  • Registrants include CTC Technology Corporation for the 202.83.144.0/21 block and Japan Network Information Center for the 203.99.240.0/21 and 103.68.144.0/22 blocks, showing a mix of direct and JPNIC-managed allocations.
  • The inventory consists of three IPv4 prefixes and one IPv6 prefix, with the largest blocks being /21s, indicating a modest and segmented address 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

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

ASNetworkPaths seen
AS17511OPTAGE Inc.212

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-16, 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 · 5.12K addresses IPv6 1 prefixes

CountryNamePrefixes
JPJapan4

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS24270
Registry name
CTC-KCC
Abuse contact
hostmaster@nic.ad.jp
Registered
2004-10-19
Last changed
2026-06-25
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 4 with no ROA
ROAs
0 authorising AS24270
ASPA
no ASPA record
IRR
100% registered · 4 of 4 announcements
Route objects
18 naming AS24270

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 1,783 prefixes, as published 2026-10-17. 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