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Autonomous System

AS28756

European Patent Organisation

Announced IPs
16,384
CIDR prefixes
3
ASN
AS28756

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 v1.2.1 — a transparent heuristic, not a definitive verdict. How it works →

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
145.64.128.0/19 8.2K
3.1%
European Patent Organisation DE — —
145.64.160.0/20 4.1K
2.1%
European Patent Organisation DE — —
145.64.240.0/20 4.1K
0.5%
European Patent Organisation DE Bavaria Munich
145.64.128.0/21 2.0K
11.8%
European Patent Organisation NL — —
145.64.248.0/21 2.0K
0.8%
European Patent Organisation DE — —
145.64.136.0/22 1.0K
0.0%
European Patent Organisation DE — —
145.64.152.0/22 1.0K
0.5%
European Patent Organisation NL — —
145.64.240.0/22 1.0K
0.2%
European Patent Organisation NL — —
145.64.142.0/23 512
0.0%
European Patent Organisation NL — —
145.64.144.0/23 512
1.2%
European Patent Organisation NL — —
145.64.150.0/23 512
0.0%
European Patent Organisation NL — —
145.64.156.0/23 512
0.0%
European Patent Organisation NL — —
145.64.246.0/23 512
0.0%
European Patent Organisation NL — —
145.64.140.0/24 256
0.0%
European Patent Organisation NL — —
145.64.141.0/24 256
0.0%
European Patent Organisation DE — —
145.64.149.0/24 256
0.0%
European Patent Organisation NL — —
145.64.159.0/24 256
0.0%
European Patent Organisation NL — —
145.64.244.0/24 256
0.0%
European Patent Organisation NL — —
145.64.245.0/24 256
0.8%
European Patent Organisation DE — —
145.64.146.128/25 128
0.0%
European Patent Organisation NL — —
145.64.147.128/25 128
0.8%
European Patent Organisation NL — —
145.64.148.128/25 128
0.8%
European Patent Organisation NL — —
145.64.158.128/25 128
0.8%
European Patent Organisation NL — —
145.64.146.64/26 64
0.0%
European Patent Organisation NL — —
145.64.147.64/26 64
0.0%
European Patent Organisation NL — —
145.64.148.64/26 64
1.6%
European Patent Organisation NL — —
145.64.158.64/26 64
0.0%
European Patent Organisation NL — —
145.64.146.32/27 32
0.0%
European Patent Organisation NL — —
145.64.147.32/27 32
0.0%
European Patent Organisation NL — —
145.64.148.0/27 32
0.0%
European Patent Organisation NL — —
145.64.158.0/27 32
0.0%
European Patent Organisation DE — —
145.64.158.32/27 32
0.0%
European Patent Organisation NL — —
145.64.146.0/28 16
0.0%
European Patent Organisation NL — —
145.64.147.0/28 16
0.0%
European Patent Organisation NL — —
145.64.148.48/28 16
0.0%
European Patent Organisation NL — —
145.64.146.24/29 8
0.0%
European Patent Organisation NL — —
145.64.147.24/29 8
0.0%
European Patent Organisation NL — —
145.64.148.40/29 8
0.0%
European Patent Organisation NL — —
145.64.146.16/30 4
0.0%
European Patent Organisation NL — —
145.64.147.16/30 4
0.0%
European Patent Organisation NL — —
145.64.147.20/30 4
0.0%
European Patent Organisation DE — —
145.64.148.32/30 4
0.0%
European Patent Organisation DE — —
145.64.148.36/30 4
0.0%
European Patent Organisation NL — —
145.64.146.22/31 2
0.0%
European Patent Organisation NL — —
145.64.146.20/32 1
0.0%
European Patent Organisation DE — —
145.64.146.21/32 1
0.0%
European Patent Organisation NL — —

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS28756 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
145.64.128.0/21 40,974 2026-10-18 06:54:09
145.64.140.0/22 19,622 2026-10-18 09:22:56
145.64.149.0/24 19,538 2026-10-18 09:22:56
145.64.240.0/22 19,477 2026-10-18 09:22:56
145.64.162.0/24 19,393 2026-10-18 09:22:56
145.64.252.0/22 19,159 2026-10-18 09:22:56
145.64.158.0/24 18,927 2026-10-18 09:22:56
145.64.146.0/24 18,903 2026-10-18 09:22:56
145.64.147.0/24 18,887 2026-10-18 09:22:56
145.64.152.0/23 18,880 2026-10-18 09:22:56
145.64.148.0/24 18,766 2026-10-18 09:22:56
145.64.161.0/24 18,754 2026-10-18 09:22:56
145.64.144.0/23 18,752 2026-10-18 09:22:56
145.64.160.0/24 18,742 2026-10-18 09:22:56
145.64.132.0/22 18,698 2026-10-18 09:22:56
145.64.157.0/24 18,626 2026-10-18 09:22:56
145.64.170.0/24 18,623 2026-10-18 09:22:56
145.64.128.0/22 18,621 2026-10-18 09:22:56
145.64.136.0/22 18,590 2026-10-18 09:22:56
145.64.248.0/22 18,123 2026-10-18 09:22:56
145.64.244.0/22 18,093 2026-10-18 09:22:56
145.64.159.0/24 17,820 2026-10-18 09:22:56
145.64.160.0/20 13,441 2026-10-18 09:03:30
145.64.144.0/20 13,423 2026-10-18 09:03:30
145.64.248.0/21 10,541 2026-10-18 06:54:49
145.64.240.0/21 10,489 2026-10-18 06:54:49

Frequently Asked Questions

What is AS28756?

AS28756 is an Autonomous System Number assigned to European Patent Organisation. 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 AS28756 announce?

AS28756 announces 16.4K IPv4 addresses distributed across 3 routed CIDR prefixes. The network is registered in Germany.

Who operates AS28756?

AS28756 is operated by European Patent Organisation. The organization is based in Germany. You can view all IP ranges and related ASNs on the organization page.

What country is AS28756 registered in?

AS28756 is registered in Germany. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-10-18 10:54:04 UTC
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