Autonomous system
AS4842 TH-AS-AP Tianhai InfoTech
Hosting APNIC
Summary
Tianhai InfoTech (Tianhai Global Network)
hosting legacy
Autonomous System 4842 (TH-AS-AP) is operated by Tianhai InfoTech, a small Chinese network operator based in Changsha, Hunan, which runs its network under the name Tianhai Global Network.
What it's used for
- A small, globally peered network. It announces only a single IPv4 /24 but a large amount of IPv6, and it peers widely at internet exchanges under an open peering policy.
Notable
- The IPv4/IPv6 imbalance is the interesting part: essentially all of this network's reach is on IPv6, with IPv4 kept to a token block. That is a shape you see in operators who built out after IPv4 exhaustion.
- Despite the low AS number, this is a modern, small-scale operator rather than an early-internet network, so read nothing into the four-digit ASN.
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 3 countries, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Seattle Internet Exchange | Seattle, United States | 206.81.81.191 |
| Hong Kong Internet Exchange | Hong Kong, China | 123.255.92.42 |
| YYCIX Calgary Internet Exchange | Calgary, Canada | 206.126.225.123 |
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 1 prefixes · 256 addresses IPv6 8 prefixes
| Country | Name | Prefixes |
|---|---|---|
| CN | China | 9 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS4842- Registry name
- TH-AS-AP
- Registrant
- Tianhai InfoTech
- Abuse contact
- noc@tianhai.info
- Registered
- 2020-04-22
- Last changed
- 2022-05-23
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 9 valid, 0 with no ROA
- ROAs
- 11 authorising AS4842
- ASPA
- no ASPA record
- IRR
- 100% registered · 9 of 9 announcements
- Route objects
- 42 naming AS4842
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 1,772 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