Autonomous system
AS18266 ATNAP - Cable Networks Akita Co.,ltd.
Unclassified APNIC
Summary
Cable Networks Akita
cable residential japan access
ATNAP is the 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 such as
fa210-143-115-255.feba.jpandc210-143-117-254.feba.jp, wherefeba.jpandcna.ne.jpare domains associated with the operator's customer-facing infrastructure. - With 6144 IPv4 addresses announced across 7 prefixes and only 2 observed neighbours, the high address-to-neighbour ratio indicates an access or eyeball network rather than a transit provider.
Notable
- Registrants for all announced prefixes are listed as Japan Network Information Center, which is consistent with the standard allocation process for Japanese ISPs and does not indicate a mismatch with the announcer.
- The inventory consists of a mix of /21, /22, and /23 blocks, primarily in the 210.143.0.0/16 and 203.179.0.0/16 ranges, along with a single /32 IPv6 prefix.
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 | 2001:de8:8::1:8266:1 |
Transit providers
1 upstream, 1 downstream and 3 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS23783 | Cable Networks Akita Co.,ltd. | 217 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-01, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 7 prefixes · 6.14K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| JP | Japan | 8 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS18266- Registry name
- ATNAP
- Abuse contact
- hostmaster@nic.ad.jp
- Registered
- 2002-07-01
- Last changed
- 2026-01-28
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- Cable Networks Akita 18266
- Also known as
- CNA
- Scope
- Not Disclosed
- Traffic ratio
- Not Disclosed
- Peering policy
- Open
- 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
- 100% valid · 4 valid, 0 with no ROA
- ROAs
- 4 authorising AS18266
- ASPA
- no ASPA record
- IRR
- 100% registered · 4 of 4 announcements
- Route objects
- 4 naming AS18266
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: 447 networks and 1,843 prefixes, as published 2026-11-02. 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