Autonomous system
AS7670 CTNET Enecom,Inc.
Unclassified RIPE NSP
Summary
Enecom, Inc.
isp residential eyeball legacy
CTNET is Enecom, Inc., the telecoms and systems subsidiary of the Chugoku Electric Power group, covering the Chugoku region of western Japan (Hiroshima, Okayama, Shimane, Tottori, Yamaguchi). The handle preserves its founding name, Chugoku Telecommunication Network, from 1992.
What it's used for
- About 135,000 addresses across nineteen prefixes, plus
2001:2a8::/32. Enecom sells the MEGA EGG consumer fibre service and also resells access over NTT's FLET'S plant. - Reverse DNS is dominated by sequentially numbered subscriber pools on regional ISP and cable-TV brands the company serves:
mysNNNNNNNNNNNN.pionet.ne.jp,NNN-NN-NNN-N.okuizumo.ne.jp,NNNNNN.torichu.ne.jp. That is access-network addressing, not backbone or hosting.
Notable
- An eyeball network. A useful detail for geolocation: much of the space sits behind small local operators — municipal and community cable-TV internet services in the Chugoku prefectures — for whom Enecom supplies the addresses and the upstream. The user is a household in rural Shimane or Tottori, even where the AS name says "electric power company".
Interesting
- Enecom reached its present shape by absorption: the 1992 leased-line carrier merged with a Chugoku Electric IT services firm in 2003, and it also inherited the customer base of Urban Internet, an independent ISP from the dial-up era.
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 7 exchanges in 3 countries, largest first.
| Exchange | Location | Their address |
|---|---|---|
| BroadBand Internet eXchange Tokyo | Tokyo, Japan | 101.203.88.178 |
| JPIX Tokyo | Tokyo, Japan | 210.171.224.168 |
| BroadBand Internet eXchange Singapore | Singapore, Singapore | 103.231.152.153 |
| BroadBand Internet eXchange Osaka | Osaka, Japan | 218.100.9.192 |
| JPIX Osaka | Osaka, Japan | 103.246.232.168 |
| BroadBand Internet eXchange Hong Kong | Hong Kong, China | 103.203.158.65 |
| Equinix Internet Exchange Osaka | Osaka, Japan | 203.190.227.44 |
Transit providers
10 upstream, 18 downstream and 43 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 19 prefixes · 135K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| JP | Japan | 20 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS7670- Registry name
- CTNET
- Registered
- 1997-11-13
- Last changed
- 2024-01-22
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- Enecom,Inc.
- Also known as
- CCCN
- Network type
- NSP
- Scope
- Regional
- Traffic ratio
- Heavy Inbound
- Peering policy
- Selective
- IRR as-set
AS-CCCN- Present at
- 11 exchanges
- Facilities
- 3 facilities
- Website
- https://www.enecom.co.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
- 50% valid · 10 valid, 10 with no ROA
- ROAs
- 10 authorising AS7670
- ASPA
- no ASPA record
- IRR
- 100% registered · 20 of 20 announcements
- Route objects
- 20 naming AS7670
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: 431 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