Autonomous system
AS57175 SAKURA-AS
Unclassified RIPE
Summary
Tianhai InfoTech Limited
ipv6 hk single-prefix
SAKURA-AS is operated by Tianhai InfoTech Limited.
What it's used for
- The address space consists of a single IPv6 prefix,
2a13:1802:c010::/44, with no announced IPv4 addresses. - The inventory contains 1 IPv6 prefix and 0 IPv4 prefixes, observed against 1 routing neighbour.
- The network is located in Hong Kong.
Notable
- The registry holder is Tianhai InfoTech Limited, matching the AS handle
SAKURA-AS. - The address inventory is minimal, comprising only one IPv6 block.
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.
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 0 prefixes · 0 addresses IPv6 2 prefixes
| Country | Name | Prefixes |
|---|---|---|
| HK | Hong Kong | 2 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS57175- Registry name
- SAKURA-AS
- Registrant
- Tianhai InfoTech Limited
- Abuse contact
- abuse@tianhai.info
- Registered
- 2023-02-22
- Last changed
- 2026-10-09
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 50% valid · 1 valid, 1 with no ROA
- ROAs
- 1 authorising AS57175
- ASPA
- no ASPA record
- IRR
- 100% registered · 2 of 2 announcements
- Route objects
- 4 naming AS57175
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: 448 networks and 1,851 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