Autonomous system
AS9600 SONYTELECOM So-net Corporation
Unclassified APNIC
Summary
So-net / bit-drive (Sony group business ISP)
isp enterprise legacy
AS9600 (SONYTELECOM) is registered to So-net Corporation, the Sony group's ISP business (now Sony Network Communications). The reverse DNS shows what the AS actually carries: every sampled address resolves under cust.bit-drive.ne.jp. bit-drive is the Sony group's corporate network and cloud service brand, not the consumer So-net product.
What it's used for
This is a business-access network. It announces 15 IPv4 prefixes totalling 82,944 addresses, mostly /19s and /20s scattered across many unrelated parent blocks (219.106.224.0/19, 211.9.32.0/19, 61.45.192.0/19, 210.172.0.0/19 and so on), plus a single IPv6 /32, 2001:298::/32. That fragmented, many-small-blocks footprint is what a provider accumulates by assigning customer subnets over years, and the cust. label in the PTRs confirms the addresses are handed to customers rather than used for the operator's own servers. Only one observed BGP neighbour, on ~83k addresses, rules out any wholesale-transit role entirely: this AS sits behind its upstream and serves the businesses connected to it, over the fibre, VPN and managed-connectivity products bit-drive sells.
Notable
- Do not read this as Sony's consumer eyeball network. So-net's residential broadband and NURO subscribers live on a different AS. AS9600 is the corporate side.
- The bit-drive corporate cloud and network business was moved by corporate split to Sony Biz Networks Corporation, so the marketing brand and the registered AS holder no longer match exactly. The registry still says So-net.
- The mix of
61.x,202.x,203.x,210.x,211.x,218.x,219.xand a modern103.22.152.0/22reflects a long allocation history rather than one contiguous grant.
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 1 exchange in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Network Service Provider IXP (Distributed IX in Edo) | Tokyo, Japan | 202.249.2.71 |
Transit providers
1 upstream, 0 downstream and 2 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS2527 | Sony Network Communications Inc. | 918 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-13, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 15 prefixes · 82.94K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| JP | Japan | 16 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS9600- Registry name
- SONYTELECOM
- Abuse contact
- hostmaster@nic.ad.jp
- Registered
- 1999-08-05
- Last changed
- 2014-05-21
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 16 with no ROA
- ROAs
- 0 authorising AS9600
- ASPA
- no ASPA record
- IRR
- 100% registered · 16 of 16 announcements
- Route objects
- 33 naming AS9600
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
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: 436 networks and 1,771 prefixes, as published 2026-10-13. 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