Country
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ASN LANDING PAGE
AS12874
FASTWEB Fastweb SpA
Last updated · Apr 10, 2026
Total prefixes
127
IPv4 prefixes
109
IPv6 prefixes
18
ASN summary
How to read the scale of AS12874
FASTWEB Fastweb SpA currently shows 127 prefixes and 80 upstream, downstream, or peer relationships. Larger prefix inventories often indicate broader network footprint, but they should still be read together with country and peering context.
When is an ASN page most useful?
ASN landing pages are more useful than a single IP page when you want cloud provider attribution, routing research, infrastructure comparison, or network topology analysis at the organization level.
How should you read the country, organization, and role of AS12874?
FASTWEB Fastweb SpA is currently associated with an unknown region. Country data is only a starting point; the more important signals are the organization name, website, prefix volume, and peering relationships that reveal whether the network behaves like a cloud platform, ISP, CDN, or enterprise backbone.
What should you inspect next after the AS12874 page?
This page is currently showing live ASN data that can be used for peer, prefix, and network scale analysis. The most useful next step is usually to return to a related IP landing page, then compare that concrete address with this ASN profile and with broader topic pages for routing, cloud attribution, or WHOIS ownership analysis.
Search intents this ASN page helps cover
AS12874 ASN lookupAS12874 BGPAS12874 peersAS12874 prefixesAS12874 upstreamsFASTWEB Fastweb SpA ASN
Upstreams
Detailed data for this ASN is not available right now.
Downstreams
AS43976
AS43976
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AS196749
AS196749
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AS196874
AS196874
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AS42764
AS42764
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AS3573
AS3573
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AS47875
AS47875
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AS44512
AS44512
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AS206588
AS206588
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AS21433
AS21433
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AS207342
AS207342
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AS12650
AS12650
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AS20942
AS20942
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AS197845
AS197845
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AS33964
AS33964
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AS51580
AS51580
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AS57144
AS57144
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AS49924
AS49924
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AS206701
AS206701
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AS44831
AS44831
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AS15584
AS15584
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AS13253
AS13253
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AS204958
AS204958
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AS203672
AS203672
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AS41827
AS41827
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AS59715
AS59715
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AS201565
AS201565
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AS43988
AS43988
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AS197891
AS197891
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AS212659
AS212659
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AS49265
AS49265
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AS25518
AS25518
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AS15831
AS15831
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AS202803
AS202803
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AS198800
AS198800
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AS202382
AS202382
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AS43279
AS43279
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AS208000
AS208000
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AS29082
AS29082
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AS41160
AS41160
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AS60460
AS60460
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Peers
AS3303
AS3303
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AS3356
AS3356
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AS6762
AS6762
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AS9002
AS9002
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AS13030
AS13030
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AS6461
AS6461
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AS34549
AS34549
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AS50673
AS50673
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AS8218
AS8218
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AS29075
AS29075
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AS39351
AS39351
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AS37497
AS37497
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AS60068
AS60068
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AS24961
AS24961
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AS5405
AS5405
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AS1764
AS1764
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AS3216
AS3216
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AS35280
AS35280
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AS21412
AS21412
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AS61049
AS61049
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AS137409
AS137409
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AS5394
AS5394
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AS5392
AS5392
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AS199524
AS199524
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AS1299
AS1299
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AS207841
AS207841
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AS12969
AS12969
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AS271253
AS271253
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AS3741
AS3741
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AS6939
AS6939
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AS8455
AS8455
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AS52320
AS52320
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AS680
AS680
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AS6667
AS6667
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AS28917
AS28917
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AS20811
AS20811
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AS42708
AS42708
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AS16347
AS16347
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AS50877
AS50877
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AS8426
AS8426
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Prefix inventory
| Prefix | Name | Country |
|---|---|---|
| 151.0.128.0/17 | AS12874 | — |
| 158.255.240.0/21 | AS12874 | — |
| 176.122.196.0/23 | AS12874 | — |
| 176.122.198.0/24 | AS12874 | — |
| 185.139.48.0/24 | AS12874 | — |
| 185.139.49.0/24 | AS12874 | — |
| 185.146.134.0/24 | AS12874 | — |
| 185.162.179.0/24 | AS12874 | — |
| 185.169.184.0/24 | AS12874 | — |
| 185.169.185.0/24 | AS12874 | — |
| 185.169.186.0/24 | AS12874 | — |
| 185.169.187.0/24 | AS12874 | — |
| 185.190.214.0/24 | AS12874 | — |
| 185.190.215.0/24 | AS12874 | — |
| 185.219.180.0/22 | AS12874 | — |
| 185.219.232.0/24 | AS12874 | — |
| 185.219.234.0/24 | AS12874 | — |
| 185.22.84.0/24 | AS12874 | — |
| 185.22.85.0/24 | AS12874 | — |
| 185.223.153.0/24 | AS12874 | — |
| 185.27.72.0/24 | AS12874 | — |
| 185.27.73.0/24 | AS12874 | — |
| 185.36.72.0/22 | AS12874 | — |
| 185.43.19.0/24 | AS12874 | — |
| 185.69.188.0/22 | AS12874 | — |
| 185.7.112.0/22 | AS12874 | — |
| 193.169.20.0/24 | AS12874 | — |
| 193.193.0.0/19 | AS12874 | — |
| 193.27.28.0/22 | AS12874 | — |
| 193.3.50.0/24 | AS12874 | — |
| 193.35.4.0/22 | AS12874 | — |
| 193.42.234.0/24 | AS12874 | — |
| 193.42.238.0/24 | AS12874 | — |
| 193.43.16.0/24 | AS12874 | — |
| 193.43.17.0/24 | AS12874 | — |
| 194.5.146.0/24 | AS12874 | — |
| 194.59.208.0/22 | AS12874 | — |
| 194.63.146.0/24 | AS12874 | — |
| 194.99.35.0/24 | AS12874 | — |
| 2.16.17.0/24 | AS12874 | — |
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AS16509 · Amazon
A useful ASN landing page for understanding AWS and large cloud-network ownership.
Related lookups and next steps
WHOIS vs ASN Ownership Guide
Continue from this ASN into the differences between WHOIS ownership and ASN ownership.
Routing Troubleshooting and Network Analysis
Continue from this ASN into route troubleshooting and network analysis.
Cloud Network and ASN Comparison
Useful when you want to compare this ASN against larger cloud and edge networks.
WHOIS and IP Ownership Guide
Continue from the ASN page into WHOIS and ownership verification.
Frequently asked questions about this ASN page
What does AS12874 represent?
AS12874 is an autonomous system number used to identify an independently operated network. The current page associates it with FASTWEB Fastweb SpA in an unknown region, which helps determine whether it behaves like a cloud provider, ISP, CDN, or enterprise backbone.
What are peers, upstreams, and prefixes useful for on the AS12874 page?
They help explain the scale, interconnection depth, and route structure of AS12874. Richer peering and upstream data often indicate broader network reach, but they should still be interpreted together with prefixes and related IP landing pages.
What should you do after reviewing AS12874?
The best next step is usually to return to a concrete IP landing page to see how a specific address maps into AS12874, then continue into cloud, WHOIS, or routing topic pages to understand the network in a broader context.
Related topics
WHOIS vs ASN Ownership Guide
Understand why WHOIS ownership and ASN ownership can differ, and how to combine both when deciding who really owns or operates an IP.
WHOIS and IP Ownership Guide
Use WHOIS, ASN, prefixes, and organization data to determine who ultimately owns an IP, range, or resolved domain target.
BGP and ASN Basics Guide
Learn what ASN, BGP routes, prefixes, upstreams, downstreams, and peers mean, then explore real ASN pages.
Cloud Network and ASN Comparison
Compare large cloud and edge networks such as Google, Cloudflare, Microsoft, and Amazon through their ASN landing pages.