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
- Enterprise allocation +4
- Trust score 69 / 100
Experimental · trust-vectors model v1.3.0 — a transparent heuristic, not a definitive verdict. How it works →
Network profile
Source: PeeringDB →Present at 7 internet exchanges: LINX LON1: Main, DE-CIX Frankfurt: DE-CIX Frankfurt Peering LAN, LU-CIX, BNIX, LINX LON2, France-IX Paris, AMS-IX
Top CIDR ranges
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS6661 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 |
|---|---|---|
| 193.168.10.0/23 | 38,297 | 2026-10-22 20:43:54 |
| 193.168.14.0/23 | 36,665 | 2026-10-26 15:53:57 |
| 146.0.212.0/22 | 28,747 | 2026-11-10 09:52:21 |
| 178.254.64.0/18 | 26,762 | 2026-11-10 09:52:21 |
| 146.0.216.0/21 | 26,761 | 2026-11-10 09:52:21 |
| 185.104.108.0/22 | 26,400 | 2026-11-10 09:52:18 |
| 37.157.152.0/21 | 25,858 | 2026-11-10 09:52:21 |
| 88.207.128.0/17 | 25,770 | 2026-11-10 09:52:21 |
| 78.141.128.0/18 | 25,711 | 2026-11-10 09:52:21 |
| 87.240.192.0/18 | 25,688 | 2026-11-10 09:52:21 |
| 194.154.192.0/19 | 25,665 | 2026-11-10 09:52:21 |
| 83.99.0.0/17 | 25,654 | 2026-11-10 09:52:21 |
| 188.115.0.0/18 | 25,627 | 2026-11-10 09:52:21 |
| 195.46.224.0/19 | 25,559 | 2026-11-10 09:52:21 |
| 146.0.128.0/18 | 25,526 | 2026-11-10 09:52:21 |
| 213.135.224.0/19 | 25,475 | 2026-11-10 09:52:21 |
| 107.183.0.0/17 | 25,418 | 2026-11-10 09:52:21 |
| 213.166.32.0/19 | 25,399 | 2026-11-10 09:52:21 |
| 193.168.11.0/24 | 2,953 | 2026-07-13 13:09:59 |
| 146.0.222.0/24 | 2,538 | 2026-06-30 10:04:07 |
| 37.157.157.0/24 | 2,071 | 2026-10-23 07:26:20 |
| 87.240.227.0/24 | 1,995 | 2026-09-30 08:22:36 |
| 194.154.215.0/24 | 1,985 | 2026-07-22 10:04:00 |
Frequently Asked Questions
What is AS6661?
AS6661 is an Autonomous System Number assigned to POST Luxembourg. 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 AS6661 announce?
AS6661 announces 219.4K IPv4 addresses distributed across 22 routed CIDR prefixes. The network is registered in Luxembourg.
Who operates AS6661?
AS6661 is operated by POST Luxembourg. The organization is based in Luxembourg. You can view all IP ranges and related ASNs on the organization page.
What country is AS6661 registered in?
AS6661 is registered in Luxembourg. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
