Autonomous system
AS23783 CNA Cable Networks Akita Co.,ltd.
Residential ARIN Cable/DSL/ISP
Summary
Cable Networks Akita
cable isp residential japan
CNA is the AS handle for Cable Networks Akita Co.,ltd., a regional cable operator in Japan.
What it's used for
- The address space carries residential and business access traffic, evidenced by reverse DNS entries like
d193-116-55-254.cna.ne.jpand netnames such asCNA-CIDR-BLK-JPandPREF-AKITA-CIDR-BLK-JP. - With 50944 IPv4 addresses announced across 16 prefixes and 24 observed neighbours, the ratio suggests an access network serving a specific geographic region rather than a transit provider.
Notable
- Registrants for all sampled prefixes are Japan Network Information Center (JPNIC), consistent with the announcer's identity as a Japanese ISP.
- The inventory includes a mix of netnames, including
AKITECHNET-CIDR-BLK-JP, indicating the operator manages or has inherited space associated with Akita Prefecture infrastructure. - The address inventory is subdivided into multiple blocks, including a large /18 and several /20s and /22s, reflecting a structured allocation for a regional service provider.
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 2 exchanges in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| BroadBand Internet eXchange Tokyo | Tokyo, Japan | 101.203.88.129 |
| JPIX Tokyo | Tokyo, Japan | 210.171.225.68 |
Transit providers
8 upstream, 2 downstream and 17 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 2026-10-11, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 16 prefixes · 50.94K addresses IPv6 17 prefixes
| Country | Name | Prefixes |
|---|---|---|
| JP | Japan | 33 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS23783- Registry name
- CNA
- Abuse contact
- hostmaster@nic.ad.jp
- Registered
- 2003-06-16
- Last changed
- 2026-01-28
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- Cable Networks Akita Co.,Ltd.
- Also known as
- CNA
- Network type
- Cable/DSL/ISP
- Scope
- Asia Pacific
- Traffic ratio
- Mostly Inbound
- Peering policy
- Open
- IRR as-set
AS-CNA- Present at
- 5 exchanges
- Facilities
- 1 facilities
- Website
- https://www.cna.ne.jp/
PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.
Routing security
RPKI and IRR
- RPKI
- 86% valid · 18 valid, 3 with no ROA
- ROAs
- 17 authorising AS23783
- ASPA
- no ASPA record
- IRR
- 100% registered · 21 of 21 announcements
- Route objects
- 66 naming AS23783
Reputation
Classification and threat
Residential Fixed-line consumer ISP. Addresses here are homes.
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: 432 networks and 1,768 prefixes, as published 2026-10-12. 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