Autonomous system
AS152194 CTGSERVERLIMITED-AS-AP CTG Server Limited
Unclassified Spamhaus ASN-DROP APNIC
Interconnection
Peering at a glance
Internet exchanges
Recorded at 3 exchanges in 2 countries, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Equinix Internet Exchange Singapore | Singapore, Singapore | 27.111.231.48 |
| Hong Kong Internet Exchange | Hong Kong, China | 123.255.90.19 |
| Singapore Internet Exchange | Singapore, Singapore | 103.16.103.16 |
Transit providers
16 upstream, 2 downstream and 22 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 2026-10-15, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 242 prefixes · 188K addresses IPv6 2 prefixes
| Country | Name | Prefixes |
|---|---|---|
| HK | Hong Kong | 244 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS152194- Registry name
- CTGSERVERLIMITED-AS-AP
- Registrant
- CTG Server Limited
- Abuse contact
- abuse@ctgserver.net
- Registered
- 2023-12-22
- Last changed
- 2023-12-22
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 94% valid · 616 valid, 42 with no ROA
- ROAs
- 154 authorising AS152194
- ASPA
- no ASPA record
- IRR
- 100% registered · 658 of 658 announcements
- Route objects
- 6,420 naming AS152194
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
On Spamhaus ASN-DROP Spamhaus lists this entire
network (associated domain ctgserver.com)
as controlled by, or hijacked for, cybercrime. Many operators null-route
everything it originates.
125 DROP matches Announced space overlapping 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 1,781 prefixes, as published 2026-10-16. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
55 IC3 indicators addresses in this network appear in FBI IC3 cybersecurity advisories.
| Prefix | Advisory | Published |
|---|---|---|
14.128.33.8 | Chinese Government-linked Cyber Threat Actors Combine Automated and Hands-on Hacking Tools to Steal Sensitive Data | 2026-10-08 |
1.32.216.104 | China-Linked Hacking Group QTFY Targets Military and Critical Infrastructure with Malicious Distributed Systems | 2026-08-26 |
1.32.216.113 | China-Linked Hacking Group QTFY Targets Military and Critical Infrastructure with Malicious Distributed Systems | 2026-08-26 |
1.32.216.123 | China-Linked Hacking Group QTFY Targets Military and Critical Infrastructure with Malicious Distributed Systems | 2026-08-26 |
1.32.216.126 | China-Linked Hacking Group QTFY Targets Military and Critical Infrastructure with Malicious Distributed Systems | 2026-08-26 |
1.32.216.130 | China-Linked Hacking Group QTFY Targets Military and Critical Infrastructure with Malicious Distributed Systems | 2026-08-26 |
1.32.216.132 | China-Linked Hacking Group QTFY Targets Military and Critical Infrastructure with Malicious Distributed Systems | 2026-08-26 |
1.32.216.145 | China-Linked Hacking Group QTFY Targets Military and Critical Infrastructure with Malicious Distributed Systems | 2026-08-26 |
1.32.216.167 | China-Linked Hacking Group QTFY Targets Military and Critical Infrastructure with Malicious Distributed Systems | 2026-08-26 |
1.32.216.171 | China-Linked Hacking Group QTFY Targets Military and Critical Infrastructure with Malicious Distributed Systems | 2026-08-26 |
Showing the first 10 of 55.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere