Autonomous system
AS23630 CAC-NET CAC Inc.
Unclassified APNIC
Summary
CAC Inc.
isp residential japan cable
CAC-NET is operated by CAC Inc., a Japanese cable and DSL internet service provider.
What it's used for
- The address space carries residential customer traffic, evidenced by reverse DNS entries like
pc316000.cac-net.ne.jpandpc103254.cac-net.ne.jp. - The AS announces 12,288 IPv4 addresses across 3 prefixes, with 14 observed neighbours, indicating a role as an access network providing connectivity to end-users.
Notable
- Registrants for all announced prefixes are listed as Japan Network Information Center (JPNIC), which is consistent with JPNIC managing the allocation of these address blocks to CAC Inc.
- The address inventory consists of three /20 blocks: 133.32.112.0/20, 210.134.192.0/20, and 210.156.112.0/20, all located in Japan.
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
Internet exchanges
Recorded at 1 exchange in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| JPIX Tokyo | Tokyo, Japan | 210.171.225.129 |
Transit providers
6 upstream, 0 downstream and 6 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-14, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 3 prefixes · 12.29K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| JP | Japan | 3 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS23630- Registry name
- CAC-NET
- Abuse contact
- hostmaster@nic.ad.jp
- Registered
- 2003-01-31
- Last changed
- 2023-01-27
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 5 valid, 0 with no ROA
- ROAs
- 3 authorising AS23630
- ASPA
- no ASPA record
- IRR
- 100% registered · 5 of 5 announcements
- Route objects
- 5 naming AS23630
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 1,773 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