Autonomous system
AS17676 GIGAINFRA - SoftBank Corp.
Mobile ARIN
Summary
SoftBank (Japan)
isp mobile eyeball
SoftBank (GIGAINFRA SoftBank Corp.) — a major Japanese mobile and fixed broadband operator.
What it's used for
- Mobile and fixed internet access for millions of subscribers across Japan.
Notable
- One of Japan's big three carriers (with NTT and KDDI); a large "eyeball" network of end users.
- The consumer telecom SoftBank Corp. is distinct from SoftBank Group, the well-known technology investment conglomerate.
Interesting
- SoftBank's fixed-broadband lineage runs back to the aggressive early-2000s "Yahoo! BB" ADSL rollout that helped drive down Japanese broadband prices.
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
Internet exchanges
Recorded at 9 exchanges in 4 countries, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Equinix Internet Exchange Singapore | Singapore, Singapore | 27.111.228.75 |
| BroadBand Internet eXchange Tokyo | Tokyo, Japan | 101.203.88.16 |
| Seattle Internet Exchange | Seattle, United States | 206.81.80.197 |
| Any2 California | Los Angeles, United States | 206.72.211.18 |
| BroadBand Internet eXchange Singapore | Singapore, Singapore | 103.231.152.23 |
| BroadBand Internet eXchange Osaka | Osaka, Japan | 218.100.9.168 |
| BroadBand Internet eXchange Hong Kong | Hong Kong, China | 103.203.158.96 |
| Equinix Internet Exchange Palo Alto | Palo Alto, United States | 198.32.176.243 |
Transit providers
18 upstream, 185 downstream and 338 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-01, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 183 prefixes · 38.45M addresses IPv6 3 prefixes
| Country | Name | Prefixes |
|---|---|---|
| JP | Japan | 186 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS17676- Registry name
- GIGAINFRA
- Abuse contact
- hostmaster@nic.ad.jp
- Registered
- 2001-03-26
- Last changed
- 2023-06-07
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 86% valid · 420 valid, 66 with no ROA 4 RPKI-invalid
- ROAs
- 279 authorising AS17676
- ASPA
- no ASPA record
- IRR
- 99.2% registered · 486 of 490 announcements
- Route objects
- 750 naming AS17676
Reputation
Classification and threat
Mobile Cellular carrier. Addresses are shared by many handsets via CGNAT.
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: 449 networks and 1,846 prefixes, as published 2026-11-02. 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