AS42580
Nos Acores Comunicacoes, S.A.
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 →
AS42580 — global IP footprint
Cities where AS42580 has measurable IPv4 allocation. Click any dot to open that city's page. Size and color scale with IP count.
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 78.29.128.0/18 | 16.4K |
0.0%
|
Nos Acores Comunicacoes, S.A. | PT | Azores | Ponta Delgada |
| 128.65.224.0/19 | 8.2K |
0.0%
|
Nos Acores Comunicacoes, S.A. | PT | Azores | Ponta Delgada |
| 81.20.240.0/21 | 2.0K |
75.3%
|
Nos Acores Comunicacoes, S.A. | PT | Azores | Horta |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS42580 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 |
|---|---|---|
| 128.65.224.0/19 | 9,884 | 2026-07-24 13:53:43 |
| 78.29.128.0/18 | 9,728 | 2026-07-24 13:53:43 |
| 81.20.240.0/20 | 9,724 | 2026-07-24 13:53:43 |
Frequently Asked Questions
What is AS42580?
AS42580 is an Autonomous System Number assigned to Nos Acores Comunicacoes, S.A.. 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 AS42580 announce?
AS42580 announces 26.6K IPv4 addresses distributed across 3 routed CIDR prefixes. The network is registered in Portugal.
Who operates AS42580?
AS42580 is operated by Nos Acores Comunicacoes, S.A.. The organization is based in Portugal. You can view all IP ranges and related ASNs on the organization page.
What country is AS42580 registered in?
AS42580 is registered in Portugal. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
