Autonomous system
AS10021 KVH KVH Co.,Ltd
Unclassified DROP-listed space APNIC NSP
Summary
KVH Co., Ltd. (Colt Technology Services)
KVH is KVH Co., Ltd., founded in 1999 by Fidelity Investments as an Asia-Pacific enterprise carrier: metro fibre, data centres and managed IT aimed squarely at financial-services and multinational customers in Tokyo. Colt Technology Services bought KVH for about €130m in 2014, and the network now sits inside Colt's Asia footprint, but the AS still carries the original name.
What it's used for
Enterprise connectivity and hosted infrastructure. The AS announces 45 IPv4 prefixes totalling 110,848 addresses plus 4 IPv6 prefixes, including a substantial 2400:1000::/33. The prefix list is dominated by /21s and /22s — the granularity you get when space is assigned per corporate customer or per site, rather than pooled across a subscriber base.
Notable
Business, not eyeball, and not transit. The reverse DNS is the evidence: alongside KVH's own 203-167-48-5.rev.kvh.ne.jp, the sample turns up www2.toadkk.co.jp and CF027110040005.cims.jp — third-party corporate hostnames living on KVH's addresses. That is what a customer estate looks like on a managed-services provider. Nothing in the sample resembles a broadband pool. And 14 observed BGP neighbours against 110k addresses rules out the wholesale-carrier reading: a transit business of that size would peer with hundreds of ASes.
Interesting
KVH built its business on low-latency links between Tokyo, Hong Kong and Singapore for electronic trading, which is why a network with a modest address count sits on high-value metro fibre. When you see a workload on this space, the tenant is usually a bank, a broker or a multinational's Japan office — not Colt itself.
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 |
|---|---|---|
| JPIX Tokyo | Tokyo, Japan | 210.171.224.129 |
Transit providers
1 upstream, 13 downstream and 16 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS8220 | COLT Technology Services Group Limited | 2,695 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-14, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 30 prefixes · 111K addresses IPv6 2 prefixes
| Country | Name | Prefixes |
|---|---|---|
| JP | Japan | 32 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS10021- Registry name
- KVH
- Registered
- 2000-04-27
- Last changed
- 2011-08-05
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- Colt Technology Asia
- Also known as
- KVH
- Network type
- NSP
- Scope
- Asia Pacific
- Traffic ratio
- Balanced
- Peering policy
- No
- IRR as-set
AS-KVH- Facilities
- 1 facilities
- Website
- http://asia.colt.net/
PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.
Routing security
RPKI and IRR
- RPKI
- 84% valid · 41 valid, 8 with no ROA
- ROAs
- 37 authorising AS10021
- ASPA
- no ASPA record
- IRR
- 100% registered · 49 of 49 announcements
- Route objects
- 66 naming AS10021
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.
1 DROP match Announced space overlapping the DROP prefix list.
| Announced | DROP entry | Record |
|---|---|---|
| 103.23.12.0/22 | 103.23.12.0/22 | SBL339751 |
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 442 networks and 1,771 prefixes, as published 2026-10-15. 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