Autonomous system
AS7721 QC-NET Qin Cloud Networks
Hosting APNIC Educational/Research
Summary
Qin Cloud Networks
hosting cloud legacy
QC-NET is Qin Cloud Networks, a small Hong Kong network that presents itself as a cloud operator, publishes a looking glass, and carries a MANRS badge. It is a leaf network: several upstreams, no downstream customers.
What it's used for
- Almost all of its footprint is IPv6. It announces more than a dozen IPv6 prefixes drawn from RIPE, ARIN and APNIC ranges, against a single IPv4
/24. - The network buys transit from a handful of small providers, including AS7720, another compact cloud operator — the low-cost BGP transit niche that keeps micro-ASNs routed.
- There is no public reverse DNS on the IPv4 space, so its actual workload cannot be confirmed from rDNS.
Notable
- Its only IPv4 prefix is not its own. The
/24sits inside44.0.0.0/9— AMPRNet, the amateur-radio address space administered by Amateur Radio Digital Communications (ARDC). ARIN records the parent block to ARDC, complete with ARDC's own geofeed. Whatever Qin Cloud runs on those addresses, the block's registry lineage is the ham-radio network, not a commercial hosting allocation. - That single fact means the prefix should not be geolocated or attributed by inference from the 44/8 block's history, and equally that a "44-net means amateur radio" heuristic will misfire here.
- Do not read the low AS number as early-internet pedigree. This is a modern, recently established operator that happens to hold a recycled low number.
Interesting
- The whole IPv4 presence is 256 addresses. An operator this small holding a four-digit AS number, announcing across three RIRs' IPv6 ranges, and routing an amateur-radio
/24is a good illustration of how little the AS number now tells you about a network's age, size or purpose.
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
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Transit providers
7 upstream, 0 downstream and 8 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 2026-10-28, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 1 prefixes · 256 addresses IPv6 13 prefixes
| Country | Name | Prefixes |
|---|---|---|
| CN | China | 14 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS7721- Registry name
- QC-NET
- Registrant
- Qin Cloud Networks
- Abuse contact
- admin@6700.cc
- Registered
- 2024-12-30
- Last changed
- 2025-01-08
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- Qin Cloud Networks
- Network type
- Educational/Research
- Scope
- Global
- Traffic ratio
- Not Disclosed
- Peering policy
- Open
- IRR as-set
AS7721:AS-QINCLOUD- Present at
- 6 exchanges
- Website
- https://as7721.6700.cc
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
- 82% valid · 9 valid, 2 with no ROA
- ROAs
- 7 authorising AS7721
- ASPA
- no ASPA record
- IRR
- 100% registered · 11 of 11 announcements
- Route objects
- 89 naming AS7721
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: 448 networks and 1,849 prefixes, as published 2026-10-29. 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