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Autonomous System

AS12874

Fastweb

Announced IPs
3,563,520
CIDR prefixes
64
ASN
AS12874

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.

69/100
Moderate
How this score is built

Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →

Network profile

Source: PeeringDB →
Network type Cable/DSL/ISP
Traffic level 5-10Tbps
Geographic scope Europe
Traffic ratio Mostly Inbound
Peering policy Selective
IRR record AS-FASTWEB-GLOBAL

Present at 12 internet exchanges: TOP-IX: Public Peering VLAN, Namex Rome: VLAN Peering, LINX LON1: Main, DE-CIX Frankfurt: DE-CIX Frankfurt Peering LAN, MIX-IT, AMS-IX, MINAP Milan: MINAP, VSIX: Primary, Equinix Milan: Equinix IX - ML Metro, TIX, …

Web3 footprint

AS12874 hosts 4 observed decentralized-network nodes across 2 networks. It’s a neutral signal — it does not affect the reputation score. See the full web3 node map.

AS12874 — global IP footprint

Cities where AS12874 has measurable IPv4 allocation. Click any dot to open that city's page. Size and color scale with IP count.

View on 3D globe →

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
93.32.0.0/11 2.10M
98.0%
Fastweb IT Lombardy Milan
2.224.0.0/12 1.05M
98.5%
Fastweb IT Liguria Genoa
89.96.0.0/15 131.1K
98.3%
Fastweb IT Lombardy Milan
85.18.0.0/16 65.5K
98.6%
Fastweb IT Lombardy Milan
81.208.0.0/17 32.8K
88.4%
Fastweb IT Lombardy Borgarello
83.103.0.0/17 32.8K
90.6%
Fastweb IT Lazio Rome
92.223.128.0/17 32.8K
98.7%
Fastweb IT
151.0.128.0/17 32.8K
99.1%
Fastweb IT Lazio Rome
37.186.192.0/18 16.4K
98.1%
Fastweb IT Tuscany Florence
62.101.64.0/18 16.4K
96.2%
Fastweb IT Veneto Chiampo
193.193.0.0/19 8.2K
0.0%
Fastweb FR
213.140.0.0/19 8.2K
92.2%
Fastweb IT Lombardy Milan
213.156.32.0/19 8.2K
92.2%
Fastweb IT Campania Agropoli
62.177.0.0/20 4.1K
2.9%
Fastweb IT
5.152.240.0/21 2.0K
28.8%
Fastweb IT Lazio Rome
31.131.240.0/21 2.0K
97.1%
Fastweb IT Lombardy Sesto Calende
158.255.240.0/21 2.0K
1.7%
Fastweb IT
45.82.228.0/22 1.0K
46.6%
Fastweb IT Lombardy Milan
91.225.244.0/22 1.0K
74.4%
Fastweb IT
92.242.172.0/22 1.0K
99.5%
Fastweb IT Emilia-Romagna Castenaso
185.7.112.0/22 1.0K
99.6%
Fastweb IT
185.36.72.0/22 1.0K
98.0%
Fastweb IT
185.69.188.0/22 1.0K
0.0%
Fastweb IT
185.169.184.0/22 1.0K
0.8%
Fastweb IT
185.219.180.0/22 1.0K
4.9%
Fastweb IT Lazio Rome
193.27.28.0/22 1.0K
100.0%
Fastweb IT Lazio Rieti
193.35.4.0/22 1.0K
46.7%
Fastweb IT Sicily Modica
194.59.208.0/22 1.0K
0.0%
Fastweb IT
85.118.144.0/23 512
0.2%
Fastweb IT
176.122.196.0/23 512
0.0%
Fastweb IT
185.22.84.0/23 512
99.0%
Fastweb IT Apulia Lecce
185.27.72.0/23 512
0.0%
Fastweb IT
185.135.114.0/23 512
0.0%
Fastweb IT Abruzzo Pianella
185.139.48.0/23 512
0.0%
Fastweb IT Campania Agropoli
185.190.214.0/23 512
0.0%
Fastweb IT
193.43.16.0/23 512
3.1%
Fastweb IT
2.16.17.0/24 256
99.6%
Fastweb NL
2.19.179.0/24 256
99.2%
Fastweb NL
5.1.44.0/24 256
0.8%
Fastweb IT Campania Giugliano in Campania
23.61.204.0/24 256
94.5%
Fastweb US
37.99.240.0/24 256
100.0%
Fastweb IT Sicily Modica
37.153.135.0/24 256
100.0%
Fastweb IT
45.90.124.0/24 256
10.2%
Fastweb IT Lazio Rome
62.182.103.0/24 256
0.0%
Fastweb IT
64.126.250.0/24 256
0.0%
Fastweb FR
80.67.66.0/24 256
100.0%
Fastweb NL
84.53.184.0/24 256
100.0%
Fastweb NL
89.39.200.0/24 256
95.3%
Fastweb IT
89.43.192.0/24 256
100.0%
Fastweb IT
170.248.136.0/24 256
0.0%
Fastweb US
176.122.198.0/24 256
0.0%
Fastweb IT
185.43.19.0/24 256
75.0%
Fastweb IT
185.146.134.0/24 256
14.8%
Fastweb IT
185.162.179.0/24 256
0.0%
Fastweb FR
185.219.232.0/24 256
97.7%
Fastweb IT Piedmont Moncalieri
185.219.234.0/24 256
96.1%
Fastweb IT
185.223.153.0/24 256
0.0%
Fastweb ES
193.3.50.0/24 256
0.4%
Fastweb IT Lazio Rome
193.42.234.0/24 256
0.0%
Fastweb IT
193.42.238.0/24 256
0.0%
Fastweb IT
193.169.20.0/24 256
99.6%
Fastweb IT
194.5.146.0/24 256
0.0%
Fastweb LT
194.63.146.0/24 256
1.2%
Fastweb IT
194.99.35.0/24 256
0.0%
Fastweb IT

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS12874 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
23.61.204.0/24 10,046 2026-07-18 10:52:00
2.16.17.0/24 9,641 2026-07-18 10:51:59
2.19.179.0/24 9,625 2026-07-18 10:51:59
84.53.184.0/24 9,548 2026-07-18 10:51:59
80.67.66.0/24 9,400 2026-07-18 10:51:59
2.224.0.0/13 7,716 2026-07-18 10:52:00
2.232.0.0/13 7,337 2026-07-18 10:52:00
185.190.215.0/24 7,129 2026-07-18 10:51:59
5.1.44.0/24 6,815 2026-07-18 10:51:59
176.122.196.0/23 6,497 2026-07-18 10:51:59
176.122.198.0/24 6,473 2026-07-18 10:51:59
193.42.238.0/24 6,421 2026-07-18 10:51:59
31.131.240.0/21 6,416 2026-07-18 10:51:59
62.101.124.0/22 6,414 2026-07-18 10:51:59
193.42.234.0/24 6,413 2026-07-18 10:51:59
45.82.228.0/22 6,408 2026-07-18 10:51:59
62.101.96.0/19 6,407 2026-07-18 10:51:59
62.101.64.0/19 6,400 2026-07-18 10:51:59
37.186.192.0/18 6,384 2026-07-18 10:51:59
81.208.0.0/18 6,377 2026-07-18 10:51:59
83.103.64.0/18 6,375 2026-07-18 10:51:59
83.103.0.0/17 6,372 2026-07-18 10:51:59
81.208.64.0/18 6,371 2026-07-18 10:51:59
85.18.0.0/16 6,370 2026-07-18 10:51:59
185.139.49.0/24 6,368 2026-07-18 10:51:59
37.99.240.0/24 6,366 2026-07-18 10:51:59
93.62.0.0/15 6,361 2026-07-18 10:51:59
85.18.0.0/17 6,359 2026-07-18 10:51:59
185.36.72.0/22 6,358 2026-07-18 10:51:59
64.126.250.0/24 6,357 2026-07-18 10:51:59
85.18.128.0/17 6,357 2026-07-18 10:51:59
83.103.0.0/18 6,355 2026-07-18 10:51:59
185.146.134.0/24 6,355 2026-07-18 10:51:59
185.43.19.0/24 6,352 2026-07-18 10:51:59
37.153.135.0/24 6,351 2026-07-18 10:51:59
85.118.144.0/23 6,351 2026-07-18 10:51:59
185.190.214.0/24 6,349 2026-07-18 10:51:59
185.223.153.0/24 6,347 2026-07-18 10:51:59
194.5.146.0/24 6,345 2026-07-18 10:51:59
185.162.179.0/24 6,344 2026-07-18 10:51:59
89.97.0.0/16 6,344 2026-07-18 10:51:59
93.56.0.0/14 6,341 2026-07-18 10:51:59
151.0.128.0/17 6,340 2026-07-18 10:51:59
89.96.0.0/16 6,339 2026-07-18 10:51:59
213.140.0.0/20 6,338 2026-07-18 10:51:59
92.223.128.0/17 6,338 2026-07-18 10:51:59
213.140.16.0/20 6,337 2026-07-18 10:51:59
93.48.0.0/13 6,328 2026-07-18 10:51:59
185.7.112.0/22 6,323 2026-07-18 10:51:59
194.59.208.0/22 6,322 2026-07-18 10:51:59

Showing top 50 of 110 announced prefixes by sample volume.

Frequently Asked Questions

What is AS12874?

AS12874 is an Autonomous System Number assigned to Fastweb. 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 AS12874 announce?

AS12874 announces 3.56M IPv4 addresses distributed across 64 routed CIDR prefixes. The network is registered in Italy.

Who operates AS12874?

AS12874 is operated by Fastweb. The organization is based in Italy. You can view all IP ranges and related ASNs on the organization page.

What country is AS12874 registered in?

AS12874 is registered in Italy. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-07-18 11:25:31 UTC
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