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AS7671 MCNET - NTT SmartConnect Corporation

Japan · Autonomous System

IPv4 announced

457.7K

0.03 × /8

IPv6 announced

327.7K

/48 blocks

Prefixes

routed

Country

Japan

Interconnection (PeeringDB)

Where this network meets others — public exchange points, colocation facilities, and declared peering capacity.

Internet exchanges

IXP present

Facilities

colocation facilities

Peering capacity

40 Gbps

aggregate IX port capacity

Network type

Content

Scope: Asia Pacific

Topology (CAIDA AS Rank)

The network's position in the inter-domain routing hierarchy: its customer cone, connectivity, and transit role.

Customer cone

ASes reachable as customers

AS rank

#6,642

by customer-cone size (1 = largest)

Connectivity

3 providers · 3 peers · 2 customers

Transit role

access

CAIDA transit classification

Upstream providers

Settlement-free peers

Peering & transit neighbours (CAIDA)

Inferred AS-level relationships: 3 upstream providers, 3 peers and 2 downstream customers. The graph shows the largest few of each; the lists link through.

Upstream providers3

give this network transit

Settlement-free peers3

exchange traffic directly

Downstream customers2

buy transit from it

Relationships are inferred from BGP by CAIDA and refreshed monthly. Transit links are well captured; some private and IXP peering is under-observed, so peer counts are a lower bound.

Routing hygiene & RPKI

How well this network secures and documents its BGP announcements — RPKI origin validation, IRR registration, and an overall hygiene score.

Hygiene score

0–100 · RPKI × IRR × consistency

RPKI coverage

87%

683.3K of 785.4K routed addrs valid

RPKI invalid

no invalid prefixes

IRR registered

2 of 63 prefixes documented

Announcement composition63 routed prefixes

IPv6 deployment

Measured share of this network's users reaching the Internet over IPv6 (APNIC end-user measurement, Japan).

IPv6 capable

78.0%

users that can reach IPv6-only content

IPv6 preferred

1.6%

users that use IPv6 when both are offered

Capable78.0%

Has working IPv6 connectivity, even if it isn't always chosen.

Preferred1.6%

IPv6 wins when a destination is dual-stacked — the real-world usage rate.

Announced prefixes

Currently announced prefixes, live from RIPEstat.

63 prefixes currently seen by RIPEstat.

202.78.216.0/24202.78.217.0/24202.211.115.0/24203.211.160.0/19124.241.224.0/2058.147.224.0/19219.124.32.0/20122.50.16.0/20157.3.0.0/16219.96.64.0/20202.211.119.0/24122.100.16.0/21210.247.16.0/20202.211.117.0/24202.78.219.0/24202.211.125.0/24202.78.213.0/24219.103.32.0/20202.242.245.0/24210.247.4.0/22117.58.224.0/20202.62.176.0/20202.211.118.0/2458.147.192.0/19114.129.0.0/21202.71.64.0/19202.78.215.0/24203.78.224.0/19210.172.32.0/19210.247.0.0/23202.78.208.0/20203.184.96.0/19202.211.124.0/24124.241.240.0/20210.247.32.0/19125.252.128.0/18114.129.48.0/20157.4.0.0/16210.233.240.0/20210.247.64.0/18203.211.224.0/19202.211.114.0/242001:d70::/30219.111.224.0/202001:350::/32211.1.224.0/20202.78.209.0/24202.255.103.0/24219.96.80.0/20202.78.218.0/24210.247.8.0/21202.211.116.0/24211.1.240.0/20222.231.128.0/17202.189.176.0/21203.211.192.0/19103.28.236.0/22202.211.112.0/20219.113.64.0/20192.218.14.0/24210.89.192.0/18124.245.0.0/16124.241.192.0/19

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