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WorldIP.io
Autonomous System

AS12874

Fastweb

Announced IPs
3,562,752
CIDR prefixes
63
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 v1.3.0 — a transparent heuristic, not a definitive verdict. How it works →

Network profile

Source: PeeringDB →
Network type Cable/DSL/ISP
Traffic level 10-20Tbps
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 7 observed decentralized-network nodes across 3 networks. It’s a neutral signal — it does not affect the reputation score. See the full web3 node map.

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
93.32.0.0/11 2.10M
98.4%
Fastweb IT Lazio Rome
2.224.0.0/12 1.05M
99.7%
Fastweb IT Campania Naples
89.96.0.0/15 131.1K
98.2%
Fastweb IT Lombardy Milan
85.18.0.0/16 65.5K
99.1%
Fastweb IT Lazio Rome
81.208.0.0/17 32.8K
94.2%
Fastweb IT Lombardy Milan
83.103.0.0/17 32.8K
95.9%
Fastweb IT Campania Naples
92.223.128.0/17 32.8K
99.0%
Fastweb IT Lombardy Milan
151.0.128.0/17 32.8K
100.0%
Fastweb IT Lazio Viterbo
37.186.192.0/18 16.4K
99.3%
Fastweb IT Lombardy Milan
62.101.64.0/18 16.4K
96.1%
Fastweb IT Lombardy Pavia
193.193.0.0/19 8.2K
0.0%
Fastweb FR — —
213.140.0.0/19 8.2K
98.1%
Fastweb IT Lombardy Milan
213.156.32.0/19 8.2K
97.5%
Fastweb IT Lombardy Milan
62.177.0.0/20 4.1K
3.0%
Fastweb IT — —
5.152.240.0/21 2.0K
29.0%
Fastweb IT Lazio Rome
31.131.240.0/21 2.0K
100.0%
Fastweb IT Lombardy Milan
158.255.240.0/21 2.0K
1.7%
Fastweb IT — —
45.82.228.0/22 1.0K
49.6%
Fastweb IT Lombardy Lainate
91.225.244.0/22 1.0K
74.4%
Fastweb IT — —
92.242.172.0/22 1.0K
99.7%
Fastweb IT Emilia-Romagna Castenaso
185.7.112.0/22 1.0K
100.0%
Fastweb IT Piedmont Palermo
185.36.72.0/22 1.0K
99.6%
Fastweb IT — —
185.69.188.0/22 1.0K
0.0%
Fastweb IT — —
185.169.184.0/22 1.0K
0.9%
Fastweb IT — —
185.219.180.0/22 1.0K
5.0%
Fastweb IT Lazio Fonte Nuova
193.27.28.0/22 1.0K
95.1%
Fastweb IT Lazio Rieti
193.35.4.0/22 1.0K
50.0%
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
100.0%
Fastweb IT Apulia Lecce
185.27.72.0/23 512
0.0%
Fastweb IT — —
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
2.9%
Fastweb IT Tuscany Florence
2.16.17.0/24 256
100.0%
Fastweb NL — —
2.19.179.0/24 256
100.0%
Fastweb NL — —
5.1.44.0/24 256
0.8%
Fastweb IT Campania Marano di Napoli
23.61.204.0/24 256
98.4%
Fastweb US — —
37.99.240.0/24 256
100.0%
Fastweb IT Sicily Modica
37.153.135.0/24 256
99.6%
Fastweb IT — —
45.90.124.0/24 256
9.0%
Fastweb IT Lazio Rome
62.182.103.0/24 256
0.0%
Fastweb IT Sicily Modica
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 — —
85.118.145.0/24 256
0.0%
Fastweb IT — —
89.39.200.0/24 256
100.0%
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
100.0%
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
100.0%
Fastweb IT — —
185.219.234.0/24 256
99.6%
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
1.2%
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
2.19.179.0/24 59,531 2026-11-13 08:55:42
2.16.17.0/24 59,090 2026-11-13 08:55:42
2.224.0.0/13 47,377 2026-11-13 08:40:58
5.1.44.0/24 46,905 2026-11-13 08:54:25
2.232.0.0/13 44,754 2026-11-13 08:40:58
93.36.0.0/14 37,013 2026-11-13 08:54:25
45.90.124.0/24 36,585 2026-11-13 08:54:25
23.61.204.0/24 31,165 2026-11-13 08:55:42
84.53.184.0/24 28,012 2026-11-13 08:55:42
80.67.66.0/24 27,878 2026-11-13 08:55:42
5.152.240.0/21 23,945 2026-11-13 08:54:25
185.190.215.0/24 23,146 2026-11-13 08:54:25
31.131.240.0/21 22,205 2026-11-13 08:54:25
37.186.192.0/18 21,994 2026-11-13 08:54:25
170.248.136.0/24 21,976 2026-11-13 08:54:25
37.99.240.0/24 21,930 2026-11-13 08:54:25
37.153.135.0/24 21,909 2026-11-13 08:54:25
85.18.128.0/17 21,868 2026-11-13 08:54:25
45.82.228.0/22 21,707 2026-11-13 08:54:25
89.97.0.0/16 21,678 2026-11-13 08:54:25
62.101.124.0/22 21,662 2026-11-13 08:54:25
62.101.64.0/19 21,636 2026-11-13 08:54:25
62.101.96.0/19 21,635 2026-11-13 08:54:25
194.5.146.0/24 21,621 2026-11-13 08:54:25
176.122.196.0/23 21,619 2026-11-13 08:54:25
93.56.0.0/14 21,602 2026-11-13 08:54:25
83.103.0.0/17 21,601 2026-11-13 08:54:25
176.122.198.0/24 21,598 2026-11-13 08:54:25
83.103.64.0/18 21,591 2026-11-13 08:54:25
85.18.0.0/16 21,584 2026-11-13 08:54:25
89.43.192.0/24 21,578 2026-11-13 08:54:25
85.18.0.0/17 21,565 2026-11-13 08:54:25
193.27.28.0/22 21,561 2026-11-13 08:54:25
185.43.19.0/24 21,559 2026-11-13 08:54:25
92.223.128.0/17 21,535 2026-11-13 08:54:25
193.42.238.0/24 21,532 2026-11-13 08:54:25
81.208.64.0/18 21,524 2026-11-13 08:54:25
89.39.200.0/24 21,522 2026-11-13 08:54:25
89.96.0.0/16 21,511 2026-11-13 08:54:25
93.62.0.0/15 21,508 2026-11-13 08:54:25
193.42.234.0/24 21,507 2026-11-13 08:54:25
81.208.0.0/18 21,493 2026-11-13 08:54:25
185.36.72.0/22 21,493 2026-11-13 08:54:25
93.60.0.0/15 21,492 2026-11-13 08:54:25
89.96.0.0/15 21,490 2026-11-13 08:54:25
83.103.0.0/18 21,479 2026-11-13 08:54:25
185.139.48.0/24 21,471 2026-11-13 08:54:25
185.190.214.0/24 21,468 2026-11-13 08:54:25
185.146.134.0/24 21,465 2026-11-13 08:54:25
185.7.112.0/22 21,465 2026-11-13 08:54:25

Showing top 50 of 112 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 63 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: 2026-11-13 08:54:05 UTC
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