Reputation · trust score
A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.
- Baseline (neutral) 65
- Trust score 65 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 203.123.48.0/22 | 1.0K |
65.2%
|
DCS1 Pte. Ltd. | SG | — | — |
| 44.32.99.0/24 | 256 |
0.0%
|
DCS1 Pte. Ltd. | US | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS37989 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.
| Prefix | Announcement samples | Last seen |
|---|---|---|
| 203.123.48.0/22 | 20,859 | 2026-07-25 16:09:14 |
| 44.32.99.0/24 | 11,801 | 2026-07-25 16:02:00 |
Frequently Asked Questions
What is AS37989?
AS37989 is an Autonomous System Number assigned to DCS1 Pte. Ltd.. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).
How many IP addresses does AS37989 announce?
AS37989 announces 1.3K IPv4 addresses distributed across 2 routed CIDR prefixes. The network is registered in Singapore.
Who operates AS37989?
AS37989 is operated by DCS1 Pte. Ltd.. The organization is based in Singapore. You can view all IP ranges and related ASNs on the organization page.
What country is AS37989 registered in?
AS37989 is registered in Singapore. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
