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
- Multiple-origin (MOAS) routing anomaly −12
- Academic allocation +6
- Trust score 59 / 100
Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →
⚠ 3 MOAS prefixes — multiple origin ASNs detected
All MOAS anomalies →A previously stable prefix originated by AS136103 is now also announced by another ASN (MOAS — Multiple-Origin AS), detected from our RIPE RIS collectors. Often benign (anycast, multi-homing, or a recent transfer) — but it can signal a route leak or prefix hijack, so it's worth inspecting.
| Prefix | Origin ASNs | Last detected (UTC) |
|---|---|---|
| 103.134.212.0/24 | AS23456, AS136103 | 2026-07-17 17:07:37 |
| 103.90.210.0/24 | AS23456, AS136103 | 2026-07-17 17:07:37 |
| 103.134.214.0/24 | AS23456, AS136103 | 2026-07-17 17:07:37 |
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 103.134.214.0/23 | 512 |
0.0%
|
Universitas Semarang | ID | — | — |
| 103.90.210.0/24 | 256 |
91.4%
|
Universitas Semarang | ID | — | — |
| 103.134.212.0/24 | 256 |
0.0%
|
Universitas Semarang | ID | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS136103 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 |
|---|---|---|
| 103.90.210.0/24 | 8,201 | 2026-07-18 10:53:04 |
| 103.134.212.0/24 | 8,150 | 2026-07-18 10:53:04 |
| 103.134.215.0/24 | 8,142 | 2026-07-18 10:53:04 |
| 103.134.214.0/24 | 6,102 | 2026-07-18 10:52:16 |
Frequently Asked Questions
What is AS136103?
AS136103 is an Autonomous System Number assigned to Universitas Semarang. 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 AS136103 announce?
AS136103 announces 1.0K IPv4 addresses distributed across 3 routed CIDR prefixes. The network is registered in Indonesia.
Who operates AS136103?
AS136103 is operated by Universitas Semarang. The organization is based in Indonesia. You can view all IP ranges and related ASNs on the organization page.
What country is AS136103 registered in?
AS136103 is registered in Indonesia. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
