subnet.im

AS17676SoftBank Corp.

JapanRegistryAPNICTypeEyeball

As of 26th September 2026, AS17676 (SoftBank Corp.), an access network registered in Japan with APNIC, originates 473 IPv4 prefixes covering 49.1M addresses and 3 IPv6 prefixes. By IPv4 address space that makes it the 12th-largest of the 79,480 networks we see originating IPv4, and the largest of 729 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 195 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

473

IPv6 prefixes

3

IPv4 addresses

49.1M

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 networkAS1299Arelion (fka. Tel…AS2914NTT America, Inc.AS3257GTT Communication…AS3491PCCW Global (HK) …AS6453TATA Communicatio…AS8888xTom Pty LtdAS13030Init7 (Switzerlan…AS3130RGnet OUAS49544i3D.net B.VAS398465Rackdog LLCAS8220COLTAS35280F5 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

566

adjacent networks

Upstreams
305%
Peers
34160%
Downstreams
19534%

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

Upstreams of AS17676
NetworkCountryRelationshipPathsVantage pts
AS1299Arelion (fka. Telia Carrier)SEPeer27,09973
AS2914NTT America, Inc.USPeer13,39168
AS6453TATA Communications (America) IncUSPeer10,20332
AS3257GTT Communications Inc.USPeer7,93337
AS3491PCCW Global (HK) Ltd.HKPeer6,53013
AS701Verizon BusinessUSPeer5,83743
AS6667Elisa OyjFIPeer4,4864
AS2497Internet Initiative Japan Inc.JPPeer4,1756
AS7713PT Telkom Indonesia TbkIDPeer3,9994
AS49544i3D.net B.VNLPeer3,2774

Prefixes

All 476

The largest blocks AS17676 originates, widest first.

Largest prefixes originated by AS17676
PrefixAddressesVisibility
60.64.0.0/104.2M80/81
60.128.0.0/112.1M80/81
219.32.0.0/112.1M80/81
221.64.0.0/112.1M80/81
218.112.0.0/121M80/81
218.128.0.0/121M80/81
219.16.0.0/121M80/81
219.176.0.0/121M80/81
219.192.0.0/121M80/81
221.16.0.0/121M80/81

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

  • Valid87.2%415
  • Invalid0.0%0
  • No ROA12.8%61

Propagation

  • Globally propagated90% of full-feed peers or more100.0%476
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 473 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 27th Aug 2026.

  • Announced211.14.130.0/2422nd Sept 2026
  • Announced220.24.0.0/1622nd Sept 2026
  • Withdrawn63.223.117.0/2421st Sept 2026
  • Withdrawn63.223.123.0/2421st Sept 2026
  • Withdrawn63.223.70.0/2421st Sept 2026
  • Withdrawn63.223.99.0/2421st Sept 2026

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