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Autonomous System

AS39729

Register S.p.A.

Announced IPs
11,264
CIDR prefixes
10
ASN
AS39729

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 Europe
Traffic ratio Mostly Outbound
Peering policy Open
IRR record AS-AS39729

Present at 1 internet exchange: MIX-IT

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
81.88.48.0/20 4.1K
74.2%
Register S.p.A. IT — —
195.110.120.0/21 2.0K
18.5%
Register S.p.A. IT — —
185.2.4.0/22 1.0K
25.6%
Register S.p.A. IT — —
195.110.100.0/22 1.0K
61.0%
Register S.p.A. IT — —
213.158.80.0/22 1.0K
4.8%
Register S.p.A. IT — —
185.110.66.0/23 512
98.2%
Register S.p.A. ES — —
195.110.104.0/23 512
8.2%
Register S.p.A. IT — —
195.110.118.0/23 512
7.8%
Register S.p.A. IT — —
195.110.107.0/24 256
2.0%
Register S.p.A. IT — —
195.110.112.0/24 256
98.8%
Register S.p.A. IT — —

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS39729 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
195.110.120.0/23 42,238 2026-11-13 18:39:21
195.110.112.0/24 28,967 2026-11-13 18:39:21
81.88.48.0/20 28,789 2026-11-13 18:39:21
195.110.107.0/24 28,090 2026-11-13 18:39:21
195.110.104.0/23 27,990 2026-11-13 18:39:21
185.2.4.0/22 27,832 2026-11-13 18:39:21
195.110.102.0/23 27,807 2026-11-13 18:39:21
195.110.124.0/22 27,593 2026-11-13 18:39:21
185.110.66.0/23 27,569 2026-11-13 18:39:21
195.110.122.0/23 27,556 2026-11-13 18:39:21
195.110.100.0/23 27,554 2026-11-13 18:39:21
195.110.118.0/23 27,515 2026-11-13 18:39:21
213.158.80.0/22 27,386 2026-11-13 18:39:21
81.88.52.0/24 14,572 2026-11-13 18:39:18
81.88.53.0/24 14,515 2026-11-13 18:39:18
81.88.63.0/24 14,311 2026-11-13 18:39:18
185.2.6.0/24 14,306 2026-11-13 18:39:18
81.88.61.0/24 14,247 2026-11-13 18:39:18
81.88.58.0/24 14,247 2026-11-13 18:39:18
81.88.60.0/24 14,244 2026-11-13 18:39:18
185.110.66.0/24 14,236 2026-11-13 18:39:18

Frequently Asked Questions

What is AS39729?

AS39729 is an Autonomous System Number assigned to Register S.p.A.. 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 AS39729 announce?

AS39729 announces 11.3K IPv4 addresses distributed across 10 routed CIDR prefixes. The network is registered in Italy.

Who operates AS39729?

AS39729 is operated by Register S.p.A.. The organization is based in Italy. You can view all IP ranges and related ASNs on the organization page.

What country is AS39729 registered in?

AS39729 is registered in Italy. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-11-13 18:54:05 UTC
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