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
- Isp allocation +5
- Trust score 70 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
Network profile
Source: PeeringDB →Present at 2 internet exchanges: UA-IX, Giganet IXN: Global exchange
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 176.116.192.0/21 | 2.0K |
0.0%
|
Fasttelekom Ltd. | UA | Kyiv Oblast | Fastiv |
| 91.219.80.0/22 | 1.0K |
0.0%
|
Fasttelekom Ltd. | UA | Kyiv Oblast | Fastiv |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS51597 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 |
|---|---|---|
| 176.116.192.0/21 | 26,269 | 2026-07-24 14:45:33 |
| 91.219.80.0/22 | 26,143 | 2026-07-24 14:45:33 |
| 91.219.80.0/24 | 3,686 | 2026-07-24 11:38:27 |
| 91.219.81.0/24 | 3,678 | 2026-07-24 11:38:27 |
| 91.219.83.0/24 | 3,674 | 2026-07-24 11:38:27 |
| 176.116.197.0/24 | 3,669 | 2026-07-24 11:38:27 |
| 91.219.82.0/24 | 3,669 | 2026-07-24 11:38:27 |
| 176.116.196.0/24 | 3,666 | 2026-07-24 11:38:27 |
| 176.116.195.0/24 | 3,662 | 2026-07-24 11:38:27 |
| 176.116.193.0/24 | 3,659 | 2026-07-24 11:38:27 |
| 176.116.194.0/24 | 3,658 | 2026-07-24 11:38:27 |
| 176.116.192.0/24 | 3,638 | 2026-07-24 11:38:27 |
Frequently Asked Questions
What is AS51597?
AS51597 is an Autonomous System Number assigned to Fasttelekom Ltd.. 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 AS51597 announce?
AS51597 announces 3.1K IPv4 addresses distributed across 2 routed CIDR prefixes. The network is registered in Ukraine.
Who operates AS51597?
AS51597 is operated by Fasttelekom Ltd.. The organization is based in Ukraine. You can view all IP ranges and related ASNs on the organization page.
What country is AS51597 registered in?
AS51597 is registered in Ukraine. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
