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AS7671NTT SmartConnect Corporation

JapanRegistryAPNICTypeEyeball

As of 26th September 2026, AS7671 (NTT SmartConnect Corporation), an access network registered in Japan with APNIC, originates 61 IPv4 prefixes covering 458k addresses and 2 IPv6 prefixes. By IPv4 address space that makes it the 752nd-largest of the 79,516 networks we see originating IPv4, and the 30th-largest of 729 in Japan. It is seen behind 5 upstream networks, most often AS2497 (Internet Initiative Japan Inc.) and AS9607 (BroadBand Tower, Inc.), and in front of 3 downstream networks. 87% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 100% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

61

IPv6 prefixes

2

IPv4 addresses

458k

IPv6 /64s

21.5B

Upstream graph

The networks AS7671 is seen behind, one and two hops out, drawn from real AS paths.

AS7671Toward the internet core
Upstream graph for AS7671: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS7671NTT SmartConnect …This networkAS2497Internet Initiati…AS2914NTT America, Inc.AS6939Hurricane Electri…AS9607BroadBand Tower, …AS35280F5 Networks SARLAS3130RGnet OUAS49544i3D.net B.VAS1299Arelion (fka. Tel…AS18106Viewqwest Pte LtdAS20130Depaul UniversityAS4637Telstra Internati…AS8220COLT

Networks observed one and two hops upstream of AS7671 in real AS paths. A thicker line means more vantage points saw that adjacency, so weight tracks how well attested it is — not how much traffic it carries. Adjacency is an observation; whether it is a transit purchase or a settlement-free peering is an inference, and is labelled as one wherever we show it.

Neighbouring networks

22

adjacent networks

Upstreams
523%
Peers
1464%
Downstreams
314%

Networks carrying this one's traffic toward the rest of the internet.

Upstreams of AS7671
NetworkCountryRelationshipPathsVantage pts
AS2497Internet Initiative Japan Inc.JPPeer3,686145
AS9607BroadBand Tower, Inc.JPPeer1,02036
AS2914NTT America, Inc.USPeer35344
AS6939Hurricane Electric LLCUSPeer21644
AS35280F5 Networks SARLFRPeer452

Prefixes

All 63

The largest blocks AS7671 originates, widest first.

Largest prefixes originated by AS7671
PrefixAddressesVisibility
124.245.0.0/1665.5k80/81
157.3.0.0/1665.5k80/81
157.4.0.0/1665.5k80/81
222.231.128.0/1732.8k80/81
125.252.128.0/1816.4k80/81
210.89.192.0/1816.4k80/81
210.247.64.0/1816.4k80/81
58.147.192.0/198.2k80/81
58.147.224.0/198.2k80/81
124.241.192.0/198.2k80/81

Routing health

How AS7671's own announcements validate against RPKI and how far they propagate. The same measures for the whole routing table are on the routing table in numbers.

RPKI origin validation

  • Valid87.3%55
  • Invalid0.0%0
  • No ROA12.7%8

Propagation

  • Globally propagated90% of full-feed peers or more100.0%63
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 61 prefixes

IPv6 — 2 prefixes

  • /3017.2B × /6450.0%1
  • /324.3B × /6450.0%1

Recent changes

Announcements that started or stopped since 28th Aug 2026.

No announcement by AS7671 started or stopped in this period.

Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.