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Autonomous System

AS39257

LUMi GmbH

Announced IPs
11,776
CIDR prefixes
13
ASN
AS39257

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.

65/100
Moderate
How this score is built

Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →

Network profile

Source: PeeringDB →
Network type Cable/DSL/ISP
Traffic level 20-50Gbps
Geographic scope Europe
Traffic ratio Mostly Inbound
Peering policy Open
IRR record AS-INC

Present at 1 internet exchange: DE-CIX Frankfurt: DE-CIX Frankfurt Peering LAN

Top CIDR ranges

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS39257 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
91.212.106.0/24 21,426 2026-07-27 18:42:51
185.26.200.0/22 21,355 2026-07-27 18:42:51
87.238.190.0/24 21,317 2026-07-27 18:42:51
87.238.187.0/24 21,299 2026-07-27 18:42:51
109.197.165.0/24 21,159 2026-07-27 18:42:51
185.221.148.0/22 21,154 2026-07-27 18:42:51
87.238.184.0/21 17,654 2026-07-27 18:43:03
89.58.128.0/21 17,335 2026-07-27 18:43:03
45.67.28.0/22 11,026 2026-07-27 18:42:51
91.214.127.0/24 10,948 2026-07-27 18:42:51
78.31.200.0/22 10,891 2026-07-27 18:42:51
194.48.242.0/24 10,862 2026-07-27 18:42:51
194.156.212.0/23 10,819 2026-07-27 18:42:51
185.191.216.0/22 4,521 2026-07-27 18:42:51
185.146.48.0/22 3,851 2026-07-27 18:43:08

Frequently Asked Questions

What is AS39257?

AS39257 is an Autonomous System Number assigned to LUMi GmbH. 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 AS39257 announce?

AS39257 announces 11.8K IPv4 addresses distributed across 13 routed CIDR prefixes. The network is registered in Germany.

Who operates AS39257?

AS39257 is operated by LUMi GmbH. The organization is based in Germany. You can view all IP ranges and related ASNs on the organization page.

What country is AS39257 registered in?

AS39257 is registered in Germany. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-07-27 19:10:31 UTC
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