AS139617
ISEAS Yusof Ishak Institute
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
- Academic allocation +6
- Trust score 71 / 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 |
|---|---|---|---|---|---|---|
| 202.0.149.0/24 | 256 |
0.0%
|
ISEAS Yusof Ishak Institute | SG | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS139617 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 |
|---|---|---|
| 202.0.149.0/24 | 7,661 | 2026-07-25 14:22:56 |
Frequently Asked Questions
What is AS139617?
AS139617 is an Autonomous System Number assigned to ISEAS Yusof Ishak Institute. 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 AS139617 announce?
AS139617 announces 256 IPv4 addresses distributed across 1 routed CIDR prefixes. The network is registered in Singapore.
Who operates AS139617?
AS139617 is operated by ISEAS Yusof Ishak Institute. The organization is based in Singapore. You can view all IP ranges and related ASNs on the organization page.
What country is AS139617 registered in?
AS139617 is registered in Singapore. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
