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 →Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 155.254.40.0/21 | 2.0K |
0.0%
|
SYN LTD | GB | — | — |
| 43.239.88.0/22 | 1.0K |
0.0%
|
SYN LTD | GB | — | — |
| 91.210.64.0/22 | 1.0K |
0.0%
|
SYN LTD | GB | — | — |
| 103.206.232.0/22 | 1.0K |
0.0%
|
SYN LTD | GB | — | — |
| 107.181.156.0/22 | 1.0K |
0.0%
|
SYN LTD | GB | — | — |
| 155.254.52.0/22 | 1.0K |
0.0%
|
SYN LTD | GB | — | — |
| 155.254.56.0/22 | 1.0K |
0.0%
|
SYN LTD | GB | — | — |
| 185.135.212.0/22 | 1.0K |
0.0%
|
SYN LTD | GB | — | — |
| 198.105.96.0/22 | 1.0K |
0.0%
|
SYN LTD | GB | — | — |
| 198.105.104.0/22 | 1.0K |
0.0%
|
SYN LTD | GB | — | — |
| 155.254.50.0/23 | 512 |
0.0%
|
SYN LTD | GB | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS50077 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 |
|---|---|---|
| 43.239.88.0/22 | 5,327 | 2026-07-23 17:19:31 |
| 107.181.156.0/22 | 5,326 | 2026-07-23 17:20:11 |
| 91.210.64.0/22 | 5,317 | 2026-07-23 17:19:57 |
| 155.254.40.0/22 | 5,303 | 2026-07-23 17:20:28 |
| 198.105.96.0/22 | 5,286 | 2026-07-23 17:20:56 |
| 155.254.56.0/22 | 5,286 | 2026-07-23 17:20:28 |
| 155.254.44.0/22 | 5,284 | 2026-07-23 17:20:28 |
| 155.254.50.0/23 | 5,281 | 2026-07-23 17:20:28 |
| 185.135.212.0/22 | 5,276 | 2026-07-23 17:20:42 |
| 103.206.232.0/22 | 5,275 | 2026-07-23 17:20:08 |
| 198.105.104.0/22 | 5,264 | 2026-07-23 17:20:56 |
| 155.254.52.0/22 | 5,252 | 2026-07-23 17:20:28 |
Frequently Asked Questions
What is AS50077?
AS50077 is an Autonomous System Number assigned to SYN 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 AS50077 announce?
AS50077 announces 11.8K IPv4 addresses distributed across 11 routed CIDR prefixes. The network is registered in The Netherlands.
Who operates AS50077?
AS50077 is operated by SYN LTD. The organization is based in The Netherlands. You can view all IP ranges and related ASNs on the organization page.
What country is AS50077 registered in?
AS50077 is registered in The Netherlands. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
