AS5516
Instituto de Engenharia de Sistemas e Computadores PCUP
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 v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 146.193.0.0/16 | 65.5K |
17.8%
|
Instituto de Engenharia de Sistemas e Computadores PCUP | PT | Lisbon | Lisbon |
| 194.117.32.0/22 | 1.0K |
33.8%
|
Instituto de Engenharia de Sistemas e Computadores PCUP | PT | — | — |
| 192.12.232.0/24 | 256 |
2.3%
|
Instituto de Engenharia de Sistemas e Computadores PCUP | PT | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS5516 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 |
|---|---|---|
| 194.117.32.0/22 | 7,196 | 2026-07-20 19:09:46 |
| 146.193.224.0/19 | 7,196 | 2026-07-20 19:09:46 |
| 146.193.0.0/19 | 7,191 | 2026-07-20 19:09:46 |
| 192.12.232.0/24 | 7,164 | 2026-07-20 19:09:46 |
| 146.193.128.0/18 | 7,163 | 2026-07-20 19:09:46 |
| 146.193.192.0/19 | 7,155 | 2026-07-20 19:09:46 |
| 146.193.32.0/19 | 7,151 | 2026-07-20 19:09:46 |
| 146.193.64.0/18 | 7,148 | 2026-07-20 19:09:46 |
Frequently Asked Questions
What is AS5516?
AS5516 is an Autonomous System Number assigned to Instituto de Engenharia de Sistemas e Computadores PCUP. 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 AS5516 announce?
AS5516 announces 66.8K IPv4 addresses distributed across 3 routed CIDR prefixes. The network is registered in Portugal.
Who operates AS5516?
AS5516 is operated by Instituto de Engenharia de Sistemas e Computadores PCUP. The organization is based in Portugal. You can view all IP ranges and related ASNs on the organization page.
What country is AS5516 registered in?
AS5516 is registered in Portugal. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
