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 v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →
Network profile
Source: PeeringDB →Present at 2 internet exchanges: T-CIX, NetIX: NetIX
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 185.138.176.0/22 | 1.0K |
58.0%
|
NBI Systems Ltd. | BG | Ruse | Rousse |
| 185.218.64.0/22 | 1.0K |
46.9%
|
NBI Systems Ltd. | BG | Ruse | Rousse |
| 85.187.216.0/23 | 512 |
0.0%
|
NBI Systems Ltd. | BG | Ruse | Rousse |
| 109.121.142.0/23 | 512 |
100.0%
|
NBI Systems Ltd. | BG | Ruse | Rousse |
| 109.121.136.0/24 | 256 |
96.1%
|
NBI Systems Ltd. | BG | — | — |
| 109.121.139.0/24 | 256 |
100.0%
|
NBI Systems Ltd. | BG | — | — |
| 185.251.39.0/24 | 256 |
6.3%
|
NBI Systems Ltd. | BG | — | — |
| 212.21.129.0/24 | 256 |
2.3%
|
NBI Systems Ltd. | BG | — | — |
| 212.21.133.0/24 | 256 |
0.0%
|
NBI Systems Ltd. | BG | — | — |
| 212.21.159.0/24 | 256 |
0.0%
|
NBI Systems Ltd. | BG | Ruse | Basarbovo |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS39396 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 |
|---|---|---|
| 212.21.133.0/24 | 178,127 | 2026-07-18 11:28:22 |
| 212.21.159.0/24 | 173,690 | 2026-07-18 11:28:22 |
| 185.138.176.0/23 | 167,534 | 2026-07-18 11:28:22 |
| 212.21.129.0/24 | 167,138 | 2026-07-18 11:28:22 |
| 185.251.39.0/24 | 164,011 | 2026-07-18 11:28:22 |
| 85.187.216.0/23 | 145,190 | 2026-07-18 11:28:22 |
| 109.121.142.0/24 | 133,733 | 2026-07-18 11:28:22 |
| 185.218.64.0/22 | 132,395 | 2026-07-18 11:28:22 |
| 109.121.143.0/24 | 129,047 | 2026-07-18 11:28:22 |
| 109.121.139.0/24 | 109,988 | 2026-07-18 11:28:22 |
| 185.138.178.0/23 | 102,344 | 2026-07-18 11:28:22 |
| 109.121.136.0/24 | 93,105 | 2026-07-18 11:28:22 |
Frequently Asked Questions
What is AS39396?
AS39396 is an Autonomous System Number assigned to NBI Systems 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 AS39396 announce?
AS39396 announces 4.6K IPv4 addresses distributed across 10 routed CIDR prefixes. The network is registered in Bulgaria.
Who operates AS39396?
AS39396 is operated by NBI Systems Ltd.. The organization is based in Bulgaria. You can view all IP ranges and related ASNs on the organization page.
What country is AS39396 registered in?
AS39396 is registered in Bulgaria. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
