Country
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ASN LANDING PAGE
AS12874
FASTWEB Fastweb SpA
Last updated · Jul 20, 2026
Total prefixes
128
IPv4 prefixes
110
IPv6 prefixes
18
ASN summary
How to read the scale of AS12874
FASTWEB Fastweb SpA currently reports 128 prefixes and 80 upstream, downstream, or peer relationships. These counts describe the current dataset; they do not by themselves prove network quality, reach, or service use.
What can an ASN page answer?
An ASN page shows the public organization label, country or region, BGP prefixes, and available peer and upstream relationships. It adds network context but cannot confirm a website host, physical facility, security status, or service quality.
How should you read the organization and region fields?
FASTWEB Fastweb SpA is currently associated with an unknown region. These values come from public network sources and are useful lookup clues; an organization label, registration region, and actual service location may differ.
How should you verify the AS12874 result?
The page shows ASN data returned by the current upstream query; interpret it with the update time. Open representative IP pages from the same network and compare prefixes, source labels, and query times. Verify operator or service claims with the relevant registry or network operator.
How to verify this ASN result
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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AS196874
AS196874
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AS3573
AS3573
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AS42764
AS42764
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AS47875
AS47875
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AS44512
AS44512
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AS196749
AS196749
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AS21433
AS21433
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AS206588
AS206588
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AS209071
AS209071
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AS5397
AS5397
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AS207342
AS207342
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AS12650
AS12650
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AS196784
AS196784
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AS20942
AS20942
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AS57144
AS57144
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AS197075
AS197075
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AS51580
AS51580
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AS206701
AS206701
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AS49924
AS49924
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AS15584
AS15584
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AS213522
AS213522
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AS33964
AS33964
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AS212659
AS212659
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AS44831
AS44831
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AS203672
AS203672
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AS197891
AS197891
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AS13253
AS13253
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AS201565
AS201565
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AS200424
AS200424
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AS59715
AS59715
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AS41827
AS41827
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AS43988
AS43988
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AS202803
AS202803
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AS25518
AS25518
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AS15831
AS15831
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AS198800
AS198800
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AS56376
AS56376
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AS49265
AS49265
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AS41160
AS41160
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Peers
AS3303
AS3303
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AS1299
AS1299
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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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AS34549
AS34549
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AS50673
AS50673
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AS6461
AS6461
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AS39351
AS39351
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AS29075
AS29075
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AS37497
AS37497
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AS8218
AS8218
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AS60068
AS60068
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AS24961
AS24961
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AS1764
AS1764
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AS35280
AS35280
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AS3216
AS3216
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AS137409
AS137409
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AS21412
AS21412
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AS6939
AS6939
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AS5392
AS5392
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AS202032
AS202032
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AS5394
AS5394
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AS61049
AS61049
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AS56655
AS56655
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AS12969
AS12969
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AS199524
AS199524
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AS207841
AS207841
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AS8455
AS8455
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AS271253
AS271253
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AS52320
AS52320
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AS42708
AS42708
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AS9121
AS9121
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AS680
AS680
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AS16347
AS16347
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AS6667
AS6667
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AS28917
AS28917
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AS20811
AS20811
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AS3741
AS3741
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Prefix inventory
| Prefix | Name | Country |
|---|---|---|
| 151.0.128.0/17 | AS12874 | — |
| 158.255.240.0/21 | AS12874 | — |
| 170.248.136.0/24 | 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 | — |
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Related lookups and next steps
Frequently asked questions about this ASN page
What does AS12874 represent?
AS12874 is an autonomous system number. The current source associates it with FASTWEB Fastweb SpA and the region field an unknown region; those values add network context but do not prove a specific service, physical location, or quality level.
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?
Open a concrete IP page to check how the address maps into AS12874, then compare the prefix, source labels, and query time. Verify operator or service claims with the relevant registry or network operator.
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