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 →
AS205664 — global IP footprint
Cities where AS205664 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 |
|---|---|---|---|---|---|---|
| 151.156.248.0/21 | 2.0K |
0.6%
|
Vattenfall AB | SE | Stockholm County | Solna |
| 144.27.0.0/24 | 256 |
0.0%
|
Vattenfall AB | SE | — | — |
| 192.36.28.0/24 | 256 |
0.4%
|
Vattenfall AB | SE | Västmanland County | Västerås |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS205664 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 |
|---|---|---|
| 151.156.252.0/22 | 6,525 | 2026-07-23 20:29:53 |
| 151.156.248.0/22 | 6,519 | 2026-07-23 20:29:53 |
| 144.27.0.0/24 | 6,506 | 2026-07-23 20:29:53 |
| 192.36.28.0/24 | 6,483 | 2026-07-23 20:29:53 |
| 151.156.254.0/24 | 3,648 | 2026-07-23 20:30:15 |
| 151.156.253.0/24 | 3,634 | 2026-07-23 20:30:15 |
Frequently Asked Questions
What is AS205664?
AS205664 is an Autonomous System Number assigned to Vattenfall AB. 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 AS205664 announce?
AS205664 announces 2.6K IPv4 addresses distributed across 3 routed CIDR prefixes. The network is registered in Sweden.
Who operates AS205664?
AS205664 is operated by Vattenfall AB. The organization is based in Sweden. You can view all IP ranges and related ASNs on the organization page.
What country is AS205664 registered in?
AS205664 is registered in Sweden. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
