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 →
Network profile
Source: PeeringDB →Present at 1 internet exchange: SOX Serbia
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 206.15.32.0/20 | 4.1K |
0.0%
|
Mainstream doo Beograd | RS | — | — |
| 87.237.200.0/21 | 2.0K |
5.0%
|
Mainstream doo Beograd | RS | — | — |
| 87.237.204.0/22 | 1.0K |
4.4%
|
Mainstream doo Beograd | RS | — | — |
| 91.214.200.0/22 | 1.0K |
1.2%
|
Mainstream doo Beograd | RS | — | — |
| 91.222.4.0/22 | 1.0K |
26.6%
|
Mainstream doo Beograd | RS | — | — |
| 92.249.52.0/22 | 1.0K |
0.0%
|
Mainstream doo Beograd | RS | — | — |
| 185.29.100.0/22 | 1.0K |
1.9%
|
Mainstream doo Beograd | RS | — | — |
| 185.167.144.0/22 | 1.0K |
0.5%
|
Mainstream doo Beograd | BG | — | — |
| 188.93.120.0/22 | 1.0K |
0.3%
|
Mainstream doo Beograd | RS | — | — |
| 87.237.202.0/23 | 512 |
11.1%
|
Mainstream doo Beograd | RS | — | — |
| 91.185.218.0/23 | 512 |
0.0%
|
Mainstream doo Beograd | SI | — | — |
| 87.237.201.0/24 | 256 |
0.0%
|
Mainstream doo Beograd | RS | — | — |
| 91.185.199.0/24 | 256 |
2.0%
|
Mainstream doo Beograd | SI | — | — |
| 91.185.223.0/24 | 256 |
0.0%
|
Mainstream doo Beograd | SI | — | — |
| 185.168.19.0/24 | 256 |
0.0%
|
Mainstream doo Beograd | RS | — | — |
| 212.72.214.0/24 | 256 |
0.0%
|
Mainstream doo Beograd | BG | — | — |
| 213.91.181.0/24 | 256 |
0.0%
|
Mainstream doo Beograd | BG | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS51859 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 |
|---|---|---|
| 87.237.202.0/24 | 291,653 | 2026-07-24 18:14:18 |
| 91.214.200.0/22 | 289,980 | 2026-07-24 18:14:18 |
| 87.237.200.0/21 | 288,429 | 2026-07-24 18:14:18 |
| 87.237.203.0/24 | 287,356 | 2026-07-24 18:14:18 |
| 87.237.204.0/24 | 253,777 | 2026-07-24 18:14:18 |
| 87.237.205.0/24 | 224,286 | 2026-07-24 18:14:18 |
| 87.237.201.0/24 | 200,261 | 2026-07-24 18:14:18 |
| 92.249.52.0/22 | 187,362 | 2026-07-24 18:14:18 |
| 185.29.100.0/24 | 162,021 | 2026-07-24 18:13:07 |
| 185.29.101.0/24 | 155,608 | 2026-07-24 18:13:07 |
| 185.29.102.0/24 | 149,075 | 2026-07-24 18:13:07 |
| 185.29.103.0/24 | 141,710 | 2026-07-24 18:13:07 |
| 185.29.100.0/22 | 108,845 | 2026-07-24 18:13:07 |
| 188.93.122.0/24 | 88,604 | 2026-07-24 18:13:07 |
| 91.222.4.0/22 | 83,352 | 2026-07-24 18:13:07 |
| 87.237.206.0/24 | 81,070 | 2026-07-24 18:13:07 |
| 91.222.5.0/24 | 75,836 | 2026-07-24 18:13:07 |
| 188.93.120.0/22 | 70,681 | 2026-07-24 18:13:07 |
| 91.222.6.0/24 | 69,981 | 2026-07-24 18:13:07 |
| 91.222.7.0/24 | 64,907 | 2026-07-24 18:13:07 |
| 91.222.4.0/24 | 15,576 | 2026-07-24 18:10:30 |
| 206.15.32.0/20 | 12,843 | 2026-07-24 18:08:47 |
| 87.237.207.0/24 | 11,426 | 2026-07-24 18:10:25 |
| 185.168.19.0/24 | 11,417 | 2026-07-24 18:10:44 |
| 188.93.123.0/24 | 11,202 | 2026-07-24 18:10:25 |
| 188.93.121.0/24 | 11,195 | 2026-07-24 18:10:25 |
| 185.167.146.0/24 | 11,184 | 2026-07-24 18:10:38 |
| 188.93.120.0/24 | 10,279 | 2026-07-24 18:08:47 |
| 91.185.218.0/23 | 10,225 | 2026-07-24 18:03:44 |
| 91.185.199.0/24 | 10,052 | 2026-07-24 18:03:44 |
| 91.185.223.0/24 | 10,014 | 2026-07-24 18:03:44 |
| 185.167.147.0/24 | 8,829 | 2026-07-24 18:10:38 |
| 185.167.144.0/22 | 7,995 | 2026-07-24 15:47:31 |
| 212.72.214.0/24 | 7,834 | 2026-07-24 17:13:18 |
| 213.91.181.0/24 | 6,329 | 2026-07-24 15:47:04 |
Frequently Asked Questions
What is AS51859?
AS51859 is an Autonomous System Number assigned to Mainstream doo Beograd. 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 AS51859 announce?
AS51859 announces 14.1K IPv4 addresses distributed across 17 routed CIDR prefixes. The network is registered in Serbia.
Who operates AS51859?
AS51859 is operated by Mainstream doo Beograd. The organization is based in Serbia. You can view all IP ranges and related ASNs on the organization page.
What country is AS51859 registered in?
AS51859 is registered in Serbia. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
