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 →Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 195.94.112.0/20 | 4.1K |
0.0%
|
SysGroup plc | GB | — | — |
| 31.210.128.0/21 | 2.0K |
96.7%
|
SysGroup plc | GB | England | Bristol |
| 87.237.64.0/21 | 2.0K |
97.7%
|
SysGroup plc | GB | Wales | Mountain Ash |
| 93.95.8.0/21 | 2.0K |
99.6%
|
SysGroup plc | GB | England | Tewkesbury |
| 94.190.240.0/21 | 2.0K |
98.7%
|
SysGroup plc | GB | England | Bristol |
| 109.69.80.0/21 | 2.0K |
93.6%
|
SysGroup plc | GB | England | Bristol |
| 151.236.208.0/21 | 2.0K |
37.4%
|
SysGroup plc | GB | — | — |
| 45.145.180.0/22 | 1.0K |
0.0%
|
SysGroup plc | GB | — | — |
| 185.49.236.0/22 | 1.0K |
99.6%
|
SysGroup plc | GB | — | — |
| 185.68.0.0/22 | 1.0K |
0.7%
|
SysGroup plc | GB | — | — |
| 185.71.24.0/22 | 1.0K |
0.0%
|
SysGroup plc | GB | — | — |
| 185.105.64.0/22 | 1.0K |
40.0%
|
SysGroup plc | GB | — | — |
| 185.122.216.0/22 | 1.0K |
1.1%
|
SysGroup plc | GB | — | — |
| 91.207.50.0/23 | 512 |
74.2%
|
SysGroup plc | GB | — | — |
| 185.202.115.0/24 | 256 |
3.5%
|
SysGroup plc | GB | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS39537 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 |
|---|---|---|
| 31.210.128.0/21 | 5,555 | 2026-07-24 15:27:31 |
| 185.105.66.0/23 | 5,537 | 2026-07-24 15:25:28 |
| 87.237.64.0/21 | 5,530 | 2026-07-24 15:25:38 |
| 109.69.80.0/21 | 5,523 | 2026-07-24 15:25:38 |
| 185.105.64.0/23 | 5,511 | 2026-07-24 15:25:28 |
| 185.68.0.0/22 | 5,465 | 2026-07-24 15:25:38 |
| 185.202.115.0/24 | 5,463 | 2026-07-24 15:25:28 |
| 45.145.180.0/22 | 5,438 | 2026-07-24 15:24:51 |
| 93.95.8.0/21 | 5,420 | 2026-07-24 15:25:38 |
| 185.49.236.0/22 | 5,417 | 2026-07-24 15:25:38 |
| 93.95.8.0/22 | 5,410 | 2026-07-24 15:25:38 |
| 93.95.12.0/22 | 5,396 | 2026-07-24 15:25:38 |
| 185.71.26.0/24 | 5,393 | 2026-07-24 15:25:28 |
| 94.190.240.0/21 | 5,383 | 2026-07-24 15:25:38 |
| 185.122.216.0/22 | 5,376 | 2026-07-24 15:25:38 |
| 185.71.24.0/22 | 5,375 | 2026-07-24 15:25:38 |
| 151.236.208.0/21 | 5,367 | 2026-07-24 15:25:38 |
| 91.207.50.0/23 | 5,314 | 2026-07-24 15:25:38 |
| 195.94.112.0/20 | 5,300 | 2026-07-24 15:25:28 |
| 37.35.88.0/21 | 5,294 | 2026-07-24 15:24:51 |
| 94.199.184.0/21 | 5,279 | 2026-07-24 15:25:38 |
| 31.210.132.0/24 | 4,299 | 2026-07-24 15:24:52 |
| 94.190.242.0/23 | 4,242 | 2026-07-24 15:25:45 |
Frequently Asked Questions
What is AS39537?
AS39537 is an Autonomous System Number assigned to SysGroup plc. 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 AS39537 announce?
AS39537 announces 23.3K IPv4 addresses distributed across 15 routed CIDR prefixes. The network is registered in United Kingdom.
Who operates AS39537?
AS39537 is operated by SysGroup plc. The organization is based in United Kingdom. You can view all IP ranges and related ASNs on the organization page.
What country is AS39537 registered in?
AS39537 is registered in United Kingdom. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
