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Autonomous System

AS30722 · Fastweb SpA

Overview

AS30722 is announced on the Internet: RIPE RIS route collectors currently see 284 IPv4 prefixes and 3 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 5,576,192 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 16 upstream neighbours (transit providers or peers) and 31 downstream neighbours (customers or networks it carries). Its most visible upstreams are IDDQD-AS (AS1273), Level 3 Parent, LLC (AS3356), and Hurricane Electric LLC (AS6939). AS30722 was assigned by RIPE NCC, and its registration country is Italy.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 8:51 PM UTC. This page is refreshed at most every 12 hours.

Go further

Trace a route to this networkOpen in the BGP viewerWHOIS of 5.88.0.1

The trace goes to 5.88.0.1, the first address of 5.88.0.0/13. 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 (284 prefixes)

PrefixAddresses
2.32.0.0/1665,536
2.32.0.0/204,096
2.32.16.0/204,096
2.32.48.0/204,096
2.32.64.0/204,096
2.32.80.0/204,096
2.32.192.0/204,096
2.32.224.0/198,192
2.33.0.0/1732,768
2.33.128.0/1732,768
2.33.176.0/204,096
2.34.0.0/15131,072
2.35.128.0/1816,384
2.35.224.0/204,096
2.35.240.0/204,096
2.36.0.0/14262,144
2.38.0.0/1732,768
2.38.128.0/1732,768
2.39.64.0/1816,384
2.39.128.0/1732,768
2.40.0.0/1665,536
2.40.64.0/204,096
2.40.80.0/204,096
2.40.128.0/1816,384
2.40.192.0/1816,384
2.41.0.0/1665,536
2.42.0.0/1665,536
2.42.32.0/204,096
2.42.48.0/204,096
2.42.160.0/198,192
2.42.192.0/204,096
2.43.0.0/1665,536
2.44.0.0/1665,536
2.44.128.0/1816,384
2.44.224.0/198,192
2.45.0.0/1665,536
2.45.32.0/198,192
2.45.64.0/1816,384
2.45.176.0/204,096
2.45.192.0/198,192
2.45.224.0/198,192
2.46.0.0/15131,072
2.47.64.0/198,192
2.47.96.0/198,192
2.47.160.0/204,096
2.47.176.0/204,096
2.47.192.0/198,192
2.47.224.0/204,096
5.88.0.0/13524,288
5.88.64.0/198,192
5.88.96.0/198,192
5.88.160.0/204,096
5.88.192.0/198,192
5.88.224.0/198,192
5.89.48.0/204,096
5.89.112.0/204,096
5.89.160.0/204,096
5.89.176.0/204,096
5.89.224.0/204,096
5.89.240.0/204,096
5.94.64.0/198,192
5.94.96.0/198,192
5.94.160.0/198,192
5.95.0.0/198,192
5.95.32.0/198,192
5.179.160.0/198,192
31.26.0.0/1665,536
31.27.0.0/1816,384
31.27.96.0/204,096
31.27.128.0/1732,768
31.27.192.0/198,192
31.27.224.0/198,192
31.156.0.0/14262,144
31.156.64.0/198,192
31.156.96.0/198,192
31.156.192.0/198,192
31.156.224.0/198,192
37.116.0.0/1665,536
37.116.128.0/1816,384
37.116.224.0/198,192
37.117.0.0/1665,536
37.117.192.0/198,192
37.118.0.0/1665,536
37.119.0.0/1732,768
37.119.64.0/198,192
37.119.96.0/198,192
37.119.128.0/1732,768
37.119.128.0/198,192
37.119.160.0/204,096
37.119.192.0/1816,384
37.119.224.0/198,192
37.159.0.0/1732,768
37.159.128.0/1732,768
37.159.176.0/204,096
37.159.208.0/204,096
37.159.224.0/204,096
37.176.0.0/13524,288
37.179.96.0/198,192
37.179.128.0/1816,384
37.181.224.0/198,192

Showing the first 100 of 284, in address order. Complete list on RIPEstat

IPv6 prefixes (3 prefixes)

Prefix
2a01:820::/32
2a01:827::/32
2a01:8d0::/32

Neighbours

Upstreams (transit or peers) (16)

ASNetworkVisibility
AS1273IDDQD-AS3,083
AS3356Level 3 Parent, LLC774
AS6939Hurricane Electric LLC490
AS5405Inter.link GmbH148
AS8220COLT Technology Services Group Limited93
AS9002RETN Limited89
AS1299Arelion Sweden AB78
AS41327Fiber Telecom S.p.A.46
AS12779IT.Gate S.p.A.39
AS24961WIIT AG36
AS31543-17
AS56911Warian S.R.L.16
AS209902RAI WAY S.P.A.2
AS1267WIND TRE S.P.A.1
AS31034Aruba S.p.A.1
AS39120Convergenze S.p.A.1

Downstreams (customers) (31)

ASNetworkVisibility
AS12551ENEL S.p.A523
AS211290Istituto Poligrafico E Zecca Dello Stato - Societa' Per Azioni In Breve "IPZS S.P.A"521
AS44831Insiel- Informatica per il sistema degli enti locali S.p.A332
AS203469Puntozero S.c.a.r.l.276
AS202514KME srl273
AS29419AlmavivA Almaviva S.p.A.271
AS209172Presidenza del Consiglio dei Ministri - Dipartimento delle informazioni per la sicurezza265
AS44701Software Design srl262
AS202017ASM VIGEVANO E LOMELLINA SPA261
AS44957Fastweb SpA260
AS47912-260
AS198049-189
AS204593-188
AS200583-56
AS43731-41
AS41836-36
AS42515-35
AS6882-31
AS21451-31
AS5535-30
AS51065-28
AS203612-26
AS60756-19
AS200767-18
AS43602-14
AS48394-7
AS1267WIND TRE S.P.A.6
AS197947-5
AS211820-5
AS39739-1

The 30 most visible of 31.

9 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.

Frequently asked questions

How do I find the ASN of an IP address?
Type the address in the BGP viewer: it shows the prefix that covers it, the AS that originates that prefix and the paths seen towards it. A traceroute also names the network of each hop, so you can see every AS a connection crosses.
Why does one company have several ASNs?
Large operators split their network by region, by activity or by history: a cloud may use one number for its backbone and another for a region, and every acquisition brings its own numbers. Each number has its own page, with its own prefixes and neighbours.
Why do prefix counts differ from one site to another?
Each source sees the routing table from different collectors, at a different time, and counts differently: some include prefixes withdrawn in recent weeks, some merge a block and its pieces. This page counts the prefixes RIPE RIS collectors see originated by the network at the end of the latest two-week window, and counts each IPv4 address once.
Is this the list of IP ranges of a cloud provider?
It is what its networks announce, which is what the Internet routes to them. Many providers also publish an official list of ranges per service and region; that list is the reference for firewall rules, because a range can be announced before it is used, or announced by another of their AS numbers.