Autonomous system
AS7530 BBTOWER-LAB BroadBand Tower, Inc.
Hosting ARIN
Summary
BroadBand Tower
hosting legacy
BBTOWER-LAB — a small network of BroadBand Tower, Inc., a Tokyo data-centre and cloud operator. The company was founded in 1999 as Global Center Japan, a name that survives in its address registrations (GCTR-CIDR-BLK-JP).
What it's used for
- BroadBand Tower's own infrastructure and lab/test networks — the
-LABin the handle matches theCSLAB-NETnetname on part of the space, and the routers resolve ascore1.as7530.bbtower.net. - Hosting some shared service infrastructure, including FTP hosts published under the
jpix.ad.jpdomain of the JPIX exchange (AS7527).
Notable
- Tiny: about 2,048 IPv4 addresses across three prefixes. This is not where BroadBand Tower's commercial data-centre customers live, so don't read the company's size into this AS. Judge it by what it announces, not by the brand.
- rDNS is sparse, which is itself a signal: infrastructure and lab space, not populated customer hosting.
Interesting
- BroadBand Tower grew out of Japan's Internet Research Institute, one of the original backers of JPIX. The FTP hosts carrying a JPIX name in BroadBand Tower address space are a visible remnant of that shared history.
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 3 exchanges in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| BroadBand Internet eXchange Tokyo | Tokyo, Japan | 101.203.90.183 |
| JPIX Tokyo | Tokyo, Japan | 210.171.224.52 |
| Network Service Provider IXP (Distributed IX in Edo) | Tokyo, Japan | 202.249.2.127 |
Transit providers
7 upstream, 1 downstream and 12 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 2026-10-19, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 2 prefixes · 2.05K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| JP | Japan | 3 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS7530- Registry name
- BBTower-Lab
- Registered
- 1997-03-03
- Last changed
- 2019-06-03
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 4 valid, 0 with no ROA
- ROAs
- 7 authorising AS7530
- ASPA
- no ASPA record
- IRR
- 100% registered · 4 of 4 announcements
- Route objects
- 7 naming AS7530
Reputation
Classification and threat
Hosting Datacenter or cloud provider. Addresses are servers, not people.
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: 442 networks and 1,778 prefixes, as published 2026-10-20. 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