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 →
About RETN
RETN Networks Limited is a British internet service providing company headquartered in London, United Kingdom. Founded in 2003, RETN operates a high-capacity backbone network that spans over 140,000 kilometres with more than 970 Points of Presence across Europe, Asia, and the United States.
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 139.45.198.0/23 | 512 |
0.0%
|
RETN Limited | GB | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS210203 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 |
|---|---|---|
| 139.45.198.0/23 | 9,461 | 2026-07-24 13:27:37 |
Frequently Asked Questions
What is AS210203?
AS210203 is an Autonomous System Number assigned to RETN Limited. 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 AS210203 announce?
AS210203 announces 512 IPv4 addresses distributed across 1 routed CIDR prefixes. The network is registered in Italy.
Who operates AS210203?
AS210203 is operated by RETN Limited. The organization is based in Italy. You can view all IP ranges and related ASNs on the organization page.
What country is AS210203 registered in?
AS210203 is registered in Italy. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
