subnet.im

AS17676SoftBank Corp.

JapanRegistryAPNICTypeEyeball

As of 10th November 2026, AS17676 (SoftBank Corp.), an access network registered in Japan with APNIC, originates 487 IPv4 prefixes covering 49.7M addresses and 3 IPv6 prefixes. By IPv4 address space that makes it the 12th-largest of the 80,723 networks we see originating IPv4, and the largest of 737 in Japan. It is seen behind 30 upstream networks, most often AS1299 (Arelion (fka. Telia Carrier)) and AS2914 (NTT America, Inc.), and in front of 193 downstream networks. 86% of its announcements have a valid RPKI ROA; 4 are RPKI-invalid. 99% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

487

IPv6 prefixes

3

IPv4 addresses

49.7M

IPv6 /64s

18.7T

Upstream graph

The networks AS17676 is seen behind, one and two hops out, drawn from real AS paths.

AS17676Toward the internet core
Upstream graph for AS17676: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS17676SoftBank Corp.This networkAS701Verizon BusinessAS1299Arelion (fka. Tel…AS2914NTT America, Inc.AS3491PCCW Global (HK) …AS6453TATA Communicatio…AS13030Init7 (Switzerlan…AS16552Tiggee LLCAS49544i3D.net B.VAS215859Hetzner Cloud - S…AS24516Virtutel Pty LtdAS8220COLTAS35280F5 Networks SARL

Networks observed one and two hops upstream of AS17676 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

561

adjacent networks

Upstreams
305%
Peers
33860%
Downstreams
19334%

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

Upstreams of AS17676
NetworkCountryRelationshipPathsVantage pts
AS1299Arelion (fka. Telia Carrier)SEPeer25,33066
AS2914NTT America, Inc.USPeer13,25861
AS6453TATA Communications (America) IncUSPeer9,50333
AS3491PCCW Global (HK) Ltd.HKPeer6,66615
AS701Verizon BusinessUSPeer5,77831
AS3257GTT Communications Inc.USPeer5,12338
AS6667Elisa OyjFIPeer4,5344
AS2497Internet Initiative Japan Inc.JPPeer4,2366
AS7713PT Telkom Indonesia TbkIDPeer4,0734
AS49544i3D.net B.VNLPeer3,2784

Prefixes

All 490

The largest blocks AS17676 originates, widest first.

Largest prefixes originated by AS17676
PrefixAddressesVisibility
60.64.0.0/104.2M75/76
60.128.0.0/112.1M75/76
219.32.0.0/112.1M75/76
221.64.0.0/112.1M75/76
218.112.0.0/121M75/76
218.128.0.0/121M75/76
219.16.0.0/121M75/76
219.176.0.0/121M75/76
219.192.0.0/121M75/76
221.16.0.0/121M75/76

Routing health

How AS17676'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

  • Valid85.7%420
  • Invalid0.8%4
  • No ROA13.5%66

Propagation

  • Globally propagated90% of full-feed peers or more99.0%485
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%1.0%5

Prefix sizes

IPv4 — 487 prefixes

IPv6 — 3 prefixes

  • /2017.6T × /6433.3%1
  • /241.1T × /6433.3%1
  • /324.3B × /6433.3%1

Recent changes

Announcements that started or stopped since 11th Oct 2026.

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