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
- Multiple-origin (MOAS) routing anomaly −12
- Trust score 53 / 100
Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →
⚠ 5 MOAS prefixes — multiple origin ASNs detected
All MOAS anomalies →A previously stable prefix originated by AS50153 is now also announced by another ASN (MOAS — Multiple-Origin AS), detected from our RIPE RIS collectors. Often benign (anycast, multi-homing, or a recent transfer) — but it can signal a route leak or prefix hijack, so it's worth inspecting.
| Prefix | Origin ASNs | Last detected (UTC) |
|---|---|---|
| 91.123.183.0/24 | AS50153, AS51648 | 2026-07-21 21:53:15 |
| 91.123.185.0/24 | AS50153, AS51648 | 2026-07-21 21:53:15 |
| 91.123.181.0/24 | AS50153, AS51648 | 2026-07-21 21:53:15 |
| 91.123.178.0/24 | AS50153, AS51648 | 2026-07-21 21:53:15 |
| 91.123.182.0/24 | AS50153, AS51648 | 2026-07-21 21:53:15 |
Network profile
Source: PeeringDB →Present at 2 internet exchanges: EPIX.Warszawa, Equinix Warsaw
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 37.139.72.0/21 | 2.0K |
99.6%
|
Net Bis Sp Z O O | PL | Lesser Poland | Miechów |
| 93.157.88.0/21 | 2.0K |
0.0%
|
Net Bis Sp Z O O | PL | Lesser Poland | Krakow |
| 185.161.92.0/22 | 1.0K |
99.5%
|
Net Bis Sp Z O O | PL | Lesser Poland | Kozłów |
| 195.189.88.0/22 | 1.0K |
99.2%
|
Net Bis Sp Z O O | PL | Lesser Poland | Miechów |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS50153 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 |
|---|---|---|
| 195.189.88.0/22 | 7,957 | 2026-07-21 21:36:20 |
| 185.161.92.0/22 | 7,957 | 2026-07-21 21:36:18 |
| 185.161.93.0/24 | 7,920 | 2026-07-21 21:36:17 |
| 185.161.94.0/24 | 7,875 | 2026-07-21 21:36:19 |
| 195.189.90.0/23 | 7,839 | 2026-07-21 21:36:25 |
| 185.161.94.0/23 | 7,835 | 2026-07-21 21:36:25 |
| 185.161.95.0/24 | 7,835 | 2026-07-21 21:36:21 |
| 185.161.92.0/24 | 7,755 | 2026-07-21 21:36:25 |
| 37.139.74.0/24 | 7,740 | 2026-07-21 21:36:20 |
| 37.139.76.0/24 | 7,728 | 2026-07-21 21:36:25 |
| 37.139.75.0/24 | 7,711 | 2026-07-21 21:36:22 |
| 37.139.73.0/24 | 7,710 | 2026-07-21 21:36:18 |
| 93.157.90.0/24 | 7,652 | 2026-07-21 21:36:25 |
| 93.157.95.0/24 | 7,646 | 2026-07-21 21:36:25 |
| 93.157.88.0/24 | 7,642 | 2026-07-21 21:36:25 |
| 93.157.94.0/24 | 7,639 | 2026-07-21 21:36:25 |
| 93.157.89.0/24 | 7,628 | 2026-07-21 21:36:25 |
| 93.157.92.0/24 | 7,619 | 2026-07-21 21:36:25 |
| 93.157.93.0/24 | 7,615 | 2026-07-21 21:36:25 |
| 93.157.91.0/24 | 7,606 | 2026-07-21 21:36:31 |
| 37.139.72.0/24 | 7,586 | 2026-07-21 21:36:25 |
| 37.139.79.0/24 | 7,561 | 2026-07-21 21:36:38 |
| 37.139.78.0/24 | 7,540 | 2026-07-21 21:36:38 |
| 37.139.77.0/24 | 7,533 | 2026-07-21 21:36:31 |
| 91.123.185.0/24 | 1,476 | 2026-07-08 14:30:58 |
| 91.123.181.0/24 | 1,237 | 2026-07-08 14:30:46 |
| 91.123.180.0/24 | 851 | 2026-07-09 14:16:17 |
| 91.123.178.0/24 | 832 | 2026-07-09 14:16:17 |
| 91.123.183.0/24 | 681 | 2026-07-14 21:05:05 |
| 91.123.182.0/24 | 670 | 2026-07-14 21:05:05 |
Frequently Asked Questions
What is AS50153?
AS50153 is an Autonomous System Number assigned to Net Bis Sp Z O O. 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 AS50153 announce?
AS50153 announces 6.1K IPv4 addresses distributed across 4 routed CIDR prefixes. The network is registered in Poland.
Who operates AS50153?
AS50153 is operated by Net Bis Sp Z O O. The organization is based in Poland. You can view all IP ranges and related ASNs on the organization page.
What country is AS50153 registered in?
AS50153 is registered in Poland. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
