asn.dev

Autonomous system

AS7671 MCNET NTT SmartConnect Corporation

Hosting APNIC Content

IPv4 addresses 454K 45 prefixes
IPv6 prefixes 2 counted as prefixes, not addresses
Countries 1 mostly JP
Exchanges 2 recorded by PCH
Upstreams 4 2 downstream
Flagged prefixes 0 none

Summary

NTT SmartConnect Corporation

Japan · AI-generated

isp residential eyeball hosting legacy

MCNET is NTT SmartConnect Corporation, an Osaka-based NTT West group company. Its marketing is cloud, colocation and managed hosting — but the inventory says the network is mostly broadband access.

What it's used for

  • Around 454,000 addresses across sixty-plus prefixes. The large ones are not the company's own: 124.245.0.0/16 and 122.100.16.0/21 are registered NTTWEST-NGN, 222.231.128.0/17 and 210.247.16.0/20 are FLETS-WEST, and 157.4.0.0/16 is NTT-WEST-BB2 — all held by Nippon Telegraph and Telephone West. This is NTT West's FLET'S fibre and next-generation-network subscriber space.
  • Reverse DNS confirms it: NN-NNN-NNN-N.gip-dyn.canvas.ne.jp is a dynamic global-IP pool for DoCANVAS, the apartment-building fibre internet service.
  • A smaller set of prefixes is registered NTTSMC to the company itself, and those carry its data-centre and hosting customers.

Notable

  • A kind trap. The name reads as a pure cloud provider; the address space is predominantly Japanese residential and small-business broadband. Anything geolocating this AS as datacentre space will be wrong for most of it.
  • Distinct from AS4713 (OCN, NTT's retail ISP) and AS2914 (NTT's global transit backbone).

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

Recorded at 2 exchanges in 1 country, largest first.

ExchangeLocationTheir address
BroadBand Internet eXchange OsakaOsaka, Japan218.100.9.95
JPIX OsakaOsaka, Japan103.246.232.228

Transit providers

4 upstream, 2 downstream and 10 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS2497Internet Initiative Japan Inc.2,684
AS9607BroadBand Tower, Inc.464
AS6939Hurricane Electric LLC453
AS2914NTT America, Inc.49

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-13, 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 45 prefixes · 454K addresses IPv6 2 prefixes

CountryNamePrefixes
JPJapan47

Registry

Allocation record

APNIC · via Atlas (registry + RDAP)
Registry
APNIC
Handle
AS7671
Registry name
MCNET
Abuse contact
hostmaster@nic.ad.jp
Registered
1997-11-13
Last changed
2026-07-18
Allocation
allocated

Declared

PeeringDB profile

self-reported
Name
NTT SmartConnect
Also known as
MCNET
Network type
Content
Scope
Asia Pacific
Traffic ratio
Mostly Outbound
Peering policy
Selective
Present at
1 exchanges
Facilities
5 facilities
Website
http://www.nttsmc.com/

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

Full detail
RPKI
87% valid · 55 valid, 8 with no ROA
ROAs
34 authorising AS7671
ASPA
no ASPA record
IRR
73% registered · 46 of 63 announcements
Route objects
53 naming AS7671

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: 436 networks and 1,771 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

Cross-check