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 2 internet exchanges: EPIX.Katowice, EPIX.Warszawa
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 176.96.160.0/20 | 4.1K |
99.0%
|
IT Systematic Group | PL | Subcarpathia | Krosno |
| 176.96.144.0/21 | 2.0K |
96.6%
|
IT Systematic Group | PL | Subcarpathia | Miejsce Piastowe |
| 192.109.84.0/23 | 512 |
99.4%
|
IT Systematic Group | PL | Subcarpathia | Krosno |
| 192.109.132.0/23 | 512 |
99.8%
|
IT Systematic Group | PL | Subcarpathia | Krosno |
| 91.230.221.0/24 | 256 |
97.3%
|
IT Systematic Group | PL | Subcarpathia | Krosno |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS57121 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 |
|---|---|---|
| 192.109.132.0/23 | 12,451 | 2026-07-30 11:32:38 |
| 176.96.160.0/20 | 12,442 | 2026-07-30 11:32:36 |
| 192.109.84.0/23 | 12,410 | 2026-07-30 11:32:54 |
| 176.96.144.0/21 | 12,390 | 2026-07-30 11:32:54 |
| 91.230.221.0/24 | 11,310 | 2026-07-30 11:30:29 |
| 192.109.85.28/32 | 140 | 2026-07-30 07:52:18 |
| 192.109.133.12/32 | 90 | 2026-07-28 08:24:16 |
| 176.96.164.220/32 | 48 | 2026-07-28 16:38:00 |
| 192.109.85.35/32 | 40 | 2026-07-14 23:47:09 |
| 176.96.161.99/32 | 39 | 2026-07-28 15:48:51 |
| 192.109.132.27/32 | 29 | 2026-07-14 18:43:32 |
| 192.109.85.136/32 | 27 | 2026-07-23 16:24:31 |
| 176.96.166.211/32 | 18 | 2026-06-15 07:54:55 |
| 176.96.165.239/32 | 16 | 2026-07-06 16:36:10 |
| 192.109.133.137/32 | 12 | 2026-07-28 19:04:30 |
| 192.109.132.94/32 | 11 | 2026-06-28 13:46:37 |
| 176.96.160.156/32 | 11 | 2026-07-24 19:13:57 |
| 192.109.132.199/32 | 11 | 2026-07-08 15:51:43 |
| 176.96.164.217/32 | 11 | 2026-06-23 12:33:12 |
| 192.109.132.179/32 | 10 | 2026-07-26 08:35:19 |
| 176.96.166.56/32 | 8 | 2026-06-03 20:02:47 |
| 176.96.163.241/32 | 7 | 2026-06-27 20:43:30 |
| 176.96.167.102/32 | 7 | 2026-07-05 21:29:37 |
| 176.96.164.243/32 | 7 | 2026-05-30 14:19:35 |
| 192.109.133.75/32 | 7 | 2026-06-15 07:09:50 |
| 192.109.85.13/32 | 7 | 2026-07-18 17:14:33 |
| 176.96.166.37/32 | 6 | 2026-07-27 20:28:21 |
| 192.109.132.182/32 | 6 | 2026-05-23 20:55:29 |
| 192.109.132.36/32 | 6 | 2026-06-17 18:46:55 |
| 192.109.84.95/32 | 6 | 2026-07-01 13:12:28 |
| 192.109.133.36/32 | 5 | 2026-06-26 15:45:01 |
| 192.109.133.227/32 | 5 | 2026-07-28 02:14:28 |
| 192.109.84.94/32 | 5 | 2026-06-30 00:53:12 |
| 192.109.132.28/32 | 5 | 2026-07-03 11:03:20 |
| 176.96.170.2/32 | 5 | 2026-07-16 18:13:36 |
| 176.96.172.28/32 | 5 | 2026-06-16 00:05:37 |
| 176.96.164.71/32 | 5 | 2026-06-30 19:52:15 |
| 176.96.163.117/32 | 5 | 2026-07-10 10:30:45 |
| 192.109.132.50/32 | 5 | 2026-06-08 15:36:43 |
| 192.109.133.10/32 | 4 | 2026-07-19 16:15:56 |
| 192.109.84.127/32 | 4 | 2026-05-22 16:54:27 |
| 176.96.165.62/32 | 4 | 2026-07-21 13:40:38 |
| 176.96.151.80/32 | 4 | 2026-07-18 16:45:46 |
| 176.96.166.183/32 | 4 | 2026-06-07 13:36:45 |
| 176.96.160.133/32 | 4 | 2026-06-23 10:31:07 |
| 192.109.84.206/32 | 3 | 2026-07-16 11:52:59 |
| 176.96.162.157/32 | 3 | 2026-07-14 10:46:08 |
| 192.109.84.17/32 | 3 | 2026-06-26 01:25:26 |
| 192.109.85.114/32 | 3 | 2026-07-03 00:57:07 |
| 176.96.160.42/32 | 3 | 2026-07-26 15:34:35 |
Showing top 50 of 52 announced prefixes by sample volume.
Frequently Asked Questions
What is AS57121?
AS57121 is an Autonomous System Number assigned to IT Systematic Group. 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 AS57121 announce?
AS57121 announces 7.4K IPv4 addresses distributed across 5 routed CIDR prefixes. The network is registered in Poland.
Who operates AS57121?
AS57121 is operated by IT Systematic Group. The organization is based in Poland. You can view all IP ranges and related ASNs on the organization page.
What country is AS57121 registered in?
AS57121 is registered in Poland. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
