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 v1.2.1 — a transparent heuristic, not a definitive verdict. How it works →
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 185.130.164.0/22 | 1.0K |
90.2%
|
IP Osteraker AB | SE | Stockholm County | Åkersberga |
| 185.180.252.0/22 | 1.0K |
91.7%
|
IP Osteraker AB | SE | Stockholm County | Åkersberga |
| 193.180.82.0/23 | 512 |
68.4%
|
IP Osteraker AB | SE | Stockholm County | Åkersberga |
| 193.180.194.0/23 | 512 |
0.0%
|
IP Osteraker AB | SE | — | — |
| 194.71.200.0/23 | 512 |
72.5%
|
IP Osteraker AB | SE | Stockholm County | Åkersberga |
| 193.235.203.0/24 | 256 |
73.8%
|
IP Osteraker AB | SE | — | — |
| 193.235.206.0/24 | 256 |
72.7%
|
IP Osteraker AB | SE | Stockholm County | Åkersberga |
| 194.71.95.0/24 | 256 |
0.0%
|
IP Osteraker AB | SE | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS57131 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 |
|---|---|---|
| 194.71.95.0/24 | 63,771 | 2026-10-23 09:19:38 |
| 185.130.164.0/22 | 19,334 | 2026-10-23 06:52:34 |
| 185.180.252.0/22 | 19,024 | 2026-10-23 06:52:34 |
| 194.71.200.0/23 | 18,914 | 2026-10-23 06:52:34 |
| 193.180.82.0/23 | 18,894 | 2026-10-23 06:52:34 |
| 193.235.203.0/24 | 18,850 | 2026-10-23 06:52:34 |
| 193.180.194.0/23 | 18,808 | 2026-10-23 06:52:34 |
| 193.235.206.0/24 | 18,707 | 2026-10-23 06:52:34 |
Frequently Asked Questions
What is AS57131?
AS57131 is an Autonomous System Number assigned to IP Osteraker 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 AS57131 announce?
AS57131 announces 4.4K IPv4 addresses distributed across 8 routed CIDR prefixes. The network is registered in Sweden.
Who operates AS57131?
AS57131 is operated by IP Osteraker AB. The organization is based in Sweden. You can view all IP ranges and related ASNs on the organization page.
What country is AS57131 registered in?
AS57131 is registered in Sweden. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
