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Autonomous System

AS12329

GLASFASER RUHR GmbH & Co. KG

Announced IPs
24,832
CIDR prefixes
20
ASN
AS12329

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 v1.3.0 — a transparent heuristic, not a definitive verdict. How it works →

Network profile

Source: PeeringDB →
Network type NSP
Traffic level 5-10Gbps
Geographic scope Regional
Traffic ratio Balanced
Peering policy Open
IRR record RIPE::AS-TMR

Present at 6 internet exchanges: MegaIX Dusseldorf, DE-CIX Frankfurt: DE-CIX Frankfurt Peering LAN, MegaIX Frankfurt, AMS-IX, Ruhr-CIX, DE-CIX Dusseldorf: DE-CIX Dusseldorf Peering LAN

Top CIDR ranges

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS12329 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
93.157.143.0/24 50,042 2026-11-13 15:37:19
185.19.9.0/24 44,980 2026-11-13 15:37:19
194.45.52.0/22 41,466 2026-11-13 15:37:19
81.173.6.0/24 31,095 2026-11-13 15:37:50
194.24.230.0/24 30,921 2026-11-13 15:37:50
149.232.48.0/20 19,870 2026-11-13 15:37:19
212.23.128.0/19 19,613 2026-11-13 15:37:19
194.156.86.0/24 18,603 2026-11-13 15:37:19
156.67.59.0/24 16,851 2026-11-13 15:37:19
62.221.232.0/21 16,626 2026-11-13 15:37:19
62.221.240.0/21 16,551 2026-11-13 15:37:19
185.154.112.0/22 16,387 2026-11-13 15:37:19
185.249.168.0/22 16,275 2026-11-13 15:37:19
185.11.56.0/22 13,717 2026-11-13 15:37:19
157.97.98.0/23 13,298 2026-11-13 15:37:19
91.231.204.0/24 13,195 2026-11-13 15:37:19
91.228.150.0/24 13,170 2026-11-13 15:37:19
159.100.48.0/24 13,160 2026-11-13 15:37:19
157.97.146.0/23 13,160 2026-11-13 15:37:19
185.217.52.0/22 13,058 2026-11-13 15:37:19
46.174.134.0/24 2,315 2026-11-13 15:37:50

Frequently Asked Questions

What is AS12329?

AS12329 is an Autonomous System Number assigned to GLASFASER RUHR GmbH & Co. KG. 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 AS12329 announce?

AS12329 announces 24.8K IPv4 addresses distributed across 20 routed CIDR prefixes. The network is registered in Germany.

Who operates AS12329?

AS12329 is operated by GLASFASER RUHR GmbH & Co. KG. The organization is based in Germany. You can view all IP ranges and related ASNs on the organization page.

What country is AS12329 registered in?

AS12329 is registered in Germany. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-11-13 15:39:04 UTC
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