Autonomous System
AS12874 · Fastweb SpA
Overview
AS12874 is announced on the Internet: RIPE RIS route collectors currently see 110 IPv4 prefixes and 18 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 3,563,008 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 54 upstream neighbours (transit providers or peers) and 211 downstream neighbours (customers or networks it carries). Its most visible upstreams are Swisscom (Schweiz) AG (AS3303), Level 3 Parent, LLC (AS3356), and Arelion Sweden AB (AS1299). AS12874 was assigned by RIPE NCC, and its registration country is Italy.
Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 9:48 PM UTC. This page is refreshed at most every 12 hours.
Go further
The trace goes to 93.32.0.1, the first address of 93.32.0.0/12. An address picked inside a prefix may not answer (nothing listens there, or the network filters probes): the trace then shows the path up to the last network that replies.
Announced prefixes
IPv4 prefixes (110 prefixes)
| Prefix | Addresses |
|---|---|
| 2.16.17.0/24 | 256 |
| 2.19.179.0/24 | 256 |
| 2.224.0.0/13 | 524,288 |
| 2.232.0.0/13 | 524,288 |
| 5.1.44.0/24 | 256 |
| 5.152.240.0/21 | 2,048 |
| 23.61.204.0/24 | 256 |
| 31.131.240.0/21 | 2,048 |
| 37.99.240.0/24 | 256 |
| 37.153.135.0/24 | 256 |
| 37.186.192.0/18 | 16,384 |
| 45.82.228.0/22 | 1,024 |
| 45.90.124.0/24 | 256 |
| 62.101.64.0/19 | 8,192 |
| 62.101.96.0/19 | 8,192 |
| 62.101.124.0/22 | 1,024 |
| 62.177.0.0/20 | 4,096 |
| 62.182.103.0/24 | 256 |
| 64.126.250.0/24 | 256 |
| 80.67.66.0/24 | 256 |
| 81.208.0.0/18 | 16,384 |
| 81.208.64.0/18 | 16,384 |
| 83.103.0.0/17 | 32,768 |
| 83.103.0.0/18 | 16,384 |
| 83.103.64.0/18 | 16,384 |
| 84.53.184.0/24 | 256 |
| 85.18.0.0/16 | 65,536 |
| 85.18.0.0/17 | 32,768 |
| 85.18.128.0/17 | 32,768 |
| 85.118.144.0/23 | 512 |
| 89.39.200.0/24 | 256 |
| 89.43.192.0/24 | 256 |
| 89.96.0.0/15 | 131,072 |
| 89.96.0.0/16 | 65,536 |
| 89.97.0.0/16 | 65,536 |
| 91.225.244.0/22 | 1,024 |
| 92.223.128.0/17 | 32,768 |
| 92.242.172.0/22 | 1,024 |
| 93.32.0.0/12 | 1,048,576 |
| 93.32.0.0/13 | 524,288 |
| 93.32.0.0/14 | 262,144 |
| 93.32.0.0/15 | 131,072 |
| 93.33.0.0/16 | 65,536 |
| 93.34.0.0/15 | 131,072 |
| 93.36.0.0/14 | 262,144 |
| 93.36.0.0/15 | 131,072 |
| 93.37.0.0/17 | 32,768 |
| 93.37.128.0/17 | 32,768 |
| 93.38.0.0/15 | 131,072 |
| 93.39.0.0/16 | 65,536 |
| 93.40.0.0/13 | 524,288 |
| 93.40.0.0/14 | 262,144 |
| 93.40.0.0/15 | 131,072 |
| 93.40.128.0/18 | 16,384 |
| 93.40.192.0/18 | 16,384 |
| 93.41.0.0/16 | 65,536 |
| 93.42.0.0/15 | 131,072 |
| 93.42.0.0/16 | 65,536 |
| 93.43.0.0/16 | 65,536 |
| 93.44.0.0/14 | 262,144 |
| 93.44.0.0/15 | 131,072 |
| 93.46.0.0/15 | 131,072 |
| 93.48.0.0/13 | 524,288 |
| 93.56.0.0/14 | 262,144 |
| 93.60.0.0/15 | 131,072 |
| 93.62.0.0/15 | 131,072 |
| 151.0.128.0/17 | 32,768 |
| 158.255.240.0/21 | 2,048 |
| 170.248.136.0/24 | 256 |
| 176.122.196.0/23 | 512 |
| 176.122.198.0/24 | 256 |
| 185.7.112.0/22 | 1,024 |
| 185.22.84.0/24 | 256 |
| 185.22.85.0/24 | 256 |
| 185.27.72.0/24 | 256 |
| 185.27.73.0/24 | 256 |
| 185.36.72.0/22 | 1,024 |
| 185.43.19.0/24 | 256 |
| 185.69.188.0/22 | 1,024 |
| 185.139.48.0/24 | 256 |
| 185.139.49.0/24 | 256 |
| 185.146.134.0/24 | 256 |
| 185.162.179.0/24 | 256 |
| 185.169.184.0/24 | 256 |
| 185.169.185.0/24 | 256 |
| 185.169.186.0/24 | 256 |
| 185.169.187.0/24 | 256 |
| 185.190.214.0/24 | 256 |
| 185.190.215.0/24 | 256 |
| 185.219.180.0/22 | 1,024 |
| 185.219.232.0/24 | 256 |
| 185.219.234.0/24 | 256 |
| 185.223.153.0/24 | 256 |
| 193.3.50.0/24 | 256 |
| 193.27.28.0/22 | 1,024 |
| 193.35.4.0/22 | 1,024 |
| 193.42.234.0/24 | 256 |
| 193.42.238.0/24 | 256 |
| 193.43.16.0/24 | 256 |
| 193.43.17.0/24 | 256 |
Showing the first 100 of 110, in address order. Complete list on RIPEstat
IPv6 prefixes (18 prefixes)
| Prefix |
|---|
| 2001:b00::/29 |
| 2001:b07::/32 |
| 2001:b07::/36 |
| 2001:b07:1000::/36 |
| 2001:b07:2000::/36 |
| 2001:b07:3000::/36 |
| 2001:b07:4000::/36 |
| 2001:b07:5000::/36 |
| 2001:b07:6000::/36 |
| 2001:b07:7000::/36 |
| 2001:b07:8000::/36 |
| 2001:b07:9000::/36 |
| 2001:b07:a000::/36 |
| 2001:b07:b000::/36 |
| 2001:b07:c000::/36 |
| 2001:b07:d000::/36 |
| 2001:b07:e000::/36 |
| 2001:b07:f000::/36 |
Neighbours
Upstreams (transit or peers) (54)
| AS | Network | Visibility |
|---|---|---|
| AS3303 | Swisscom (Schweiz) AG | 16,709 |
| AS3356 | Level 3 Parent, LLC | 8,841 |
| AS1299 | Arelion Sweden AB | 8,139 |
| AS6762 | TELECOM ITALIA SPARKLE S.p.A. | 3,499 |
| AS9002 | RETN Limited | 2,445 |
| AS13030 | Init7 (Switzerland) Ltd. | 1,284 |
| AS34549 | meerfarbig GmbH & Co. KG | 1,093 |
| AS6461 | Zayo Bandwidth | 651 |
| AS3216 | PJSC "Vimpelcom" | 505 |
| AS39351 | 31173 Services AB | 483 |
| AS50673 | Serverius Holding B.V. | 479 |
| AS29075 | IELO-LIAZO SERVICES SAS | 478 |
| AS37497 | Network Platforms (PTY) LTD | 436 |
| AS8218 | Zayo Infrastructure France SA | 427 |
| AS60068 | Datacamp Limited | 396 |
| AS24961 | WIIT AG | 379 |
| AS1764 | Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH | 364 |
| AS35280 | F5 Networks SARL | 323 |
| AS9121 | TTNet Turk Telekomunikasyon Anonim Sirketi | 258 |
| AS56655 | Gigahost AS | 252 |
| AS61049 | Exascale Ltd | 247 |
| AS42708 | Glesys AB | 246 |
| AS8455 | - | 235 |
| AS6939 | Hurricane Electric LLC | 234 |
| AS3741 | Dimension Data | 221 |
| AS9044 | - | 216 |
| AS5405 | Inter.link GmbH | 204 |
| AS25091 | IP-Max SA | 198 |
| AS8220 | COLT Technology Services Group Limited | 188 |
| AS12779 | - | 187 |
The 30 most visible of 54.
Downstreams (customers) (211)
| AS | Network | Visibility |
|---|---|---|
| AS42764 | Arpitel s.r.l. | 1,387 |
| AS43976 | Poste Italiane S.p.A. | 1,289 |
| AS196874 | Telenet S.r.l. | 1,122 |
| AS3573 | Accenture LLP | 857 |
| AS47875 | Provincia di Padova | 762 |
| AS196749 | BBANDA S.R.L. | 685 |
| AS57144 | BCC SISTEMI INFORMATICI S.P.A. | 621 |
| AS44512 | KONVERTO SPA | 591 |
| AS21433 | AccentureFSSC Accenture UK Limited | 550 |
| AS206588 | ItaliaNetCom CIRILLO MATTEO trading as ITALIA NET-COM | 532 |
| AS5397 | - | 523 |
| AS207342 | - | 523 |
| AS12650 | - | 501 |
| AS196784 | - | 491 |
| AS20942 | - | 486 |
| AS51580 | - | 445 |
| AS49924 | - | 435 |
| AS15584 | - | 433 |
| AS213522 | - | 424 |
| AS33964 | - | 423 |
| AS44831 | - | 414 |
| AS212659 | - | 414 |
| AS203672 | - | 405 |
| AS197891 | - | 401 |
| AS57558 | - | 392 |
| AS13253 | - | 391 |
| AS201565 | - | 390 |
| AS59715 | - | 382 |
| AS41827 | - | 380 |
| AS43988 | - | 378 |
The 30 most visible of 211.
60 more neighbours appear on both sides of this network depending on the path, so they are counted in neither list.
Visibility is RIPEstat's count of how often the route collectors observed the link. It compares neighbours with each other; it is not a traffic volume.
How to read this page
An Autonomous System (AS) is a network run under one routing policy: an internet provider, a cloud, a content network, a university. Each one has a number, its ASN, assigned by a regional registry (ARIN, RIPE NCC, APNIC, LACNIC, AFRINIC), and uses BGP, the protocol networks use to tell each other where addresses are, to announce the blocks of addresses it delivers to.
A prefix such as 203.0.113.0/24 is a block of addresses: the number after the slash says how many bits are fixed, so a /24 holds 256 IPv4 addresses and a /16 holds 65,536. Networks often announce a large block and smaller pieces of it at the same time, which is why the address total counts each address once.
Neighbours come from the paths themselves. A network that appears just before this one in a path, on the collector's side, is an upstream: a transit provider or a peer. One that appears just after it is a downstream, usually a customer. Peering at an internet exchange also shows up as an upstream, so the upstream list is not a list of paid transit.
The data comes from RIPEstat, run by the RIPE NCC, which gathers the routing tables of hundreds of networks through its RIS route collectors. This page reads it when it is visited and keeps it for 12 hours at most; the BGP viewer reads it live.