Autonomous system
AS18224 ASN-CRIMSONLOGIC-AP # AS-CRIMSONLOGIC-AP CONVERTED TO ASN-CRIMSONLOGIC-AP FOR RPSL COMPLIANCE Singapore Network Services
Unclassified APNIC
Summary
CrimsonLogic
business it-services singapore
The AS handle ASN-CRIMSONLOGIC-AP is held by CrimsonLogic Pte Ltd.
What it's used for
- The address space carries corporate IT services infrastructure, evidenced by the netname
CRIMSONLOGIC-NETand reverse DNS entries likepwebin02.asianconnect.com. - The AS announces 2560 IPv4 addresses across 5 prefixes in Singapore, with only 2 observed neighbours, indicating a small-scale internal corporate estate rather than a transit or access network.
Notable
- All registrants for the announced prefixes are
CrimsonLogic Pte Ltd, matching the AS holder and confirming consistent ownership. - The address inventory consists of five contiguous or near-contiguous blocks within the 210.56.128.0/22 range, reflecting a finely subdivided internal network structure.
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 2026-10-14, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 5 prefixes · 2.56K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| SG | Singapore | 5 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS18224- Registry name
- ASN-CRIMSONLOGIC-AP
- Registrant
- CrimsonLogic Pte Ltd
- Abuse contact
- abuse@crimsonlogic.com
- Registered
- 2008-09-04
- Last changed
- 2020-11-25
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 1 with no ROA
- ROAs
- 0 authorising AS18224
- ASPA
- no ASPA record
- IRR
- 100% registered · 1 of 1 announcements
- Route objects
- 6 naming AS18224
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: 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