AS203513
Alibaba Cloud (Singapore) Private Limited
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
- Hosting allocation −6
- Trust score 59 / 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 |
|---|---|---|---|---|---|---|
| 72.254.0.0/19 | 8.2K |
0.0%
|
Alibaba Cloud Singapore Private Limited | US | — | — |
| 72.254.8.0/21 | 2.0K |
0.0%
|
Alibaba Cloud Singapore Private Limited | US | — | — |
| 72.254.24.0/21 | 2.0K |
0.0%
|
Alibaba Cloud Singapore Private Limited | US | — | — |
| 72.254.4.0/22 | 1.0K |
0.0%
|
Alibaba Cloud Singapore Private Limited | US | — | — |
| 72.254.20.0/22 | 1.0K |
0.0%
|
Alibaba Cloud Singapore Private Limited | US | — | — |
| 72.254.2.0/23 | 512 |
0.0%
|
Alibaba Cloud Singapore Private Limited | US | — | — |
| 72.254.0.0/24 | 256 |
0.0%
|
Alibaba Cloud Singapore Private Limited | FR | — | — |
| 72.254.1.0/24 | 256 |
0.0%
|
Alibaba Cloud Singapore Private Limited | US | — | — |
| 72.254.16.0/24 | 256 |
0.0%
|
Alibaba Cloud Singapore Private Limited | FR | — | — |
| 72.254.17.0/24 | 256 |
0.0%
|
Alibaba Cloud Singapore Private Limited | US | — | — |
| 72.254.18.0/24 | 256 |
0.0%
|
Alibaba Cloud Singapore Private Limited | US | — | — |
| 72.254.19.0/24 | 256 |
0.0%
|
Alibaba Cloud Singapore Private Limited | FR | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS203513 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 |
|---|---|---|
| 72.254.16.0/20 | 6,382 | 2026-07-29 17:37:33 |
| 72.254.0.0/20 | 6,370 | 2026-07-29 17:37:33 |
| 72.254.0.0/19 | 6,350 | 2026-07-29 17:37:33 |
Frequently Asked Questions
What is AS203513?
AS203513 is an Autonomous System Number assigned to Alibaba Cloud (Singapore) Private Limited. 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 AS203513 announce?
AS203513 announces 8.2K IPv4 addresses distributed across 1 routed CIDR prefixes. The network is registered in United States.
Who operates AS203513?
AS203513 is operated by Alibaba Cloud Singapore Private Limited. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.
What country is AS203513 registered in?
AS203513 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
