Networks in Italy

1,121 autonomous systems are registered in Italy (IT). Together they announce 51,838,464 IPv4 addresses, 1.65% of the announced total, which ranks Italy #10 of 240 countries.

Autonomous systems1,1211,081 announce IPv4, 40 IPv6 only

IPv4 addresses51,838,4641.65% of announced IPv4 · #10 worldwide

Top 5 networks hold75.2%of Italy's IPv4 space

IPv66,928 x /32 (454,053,066 x /48)422 of 1121 networks (38%) announce IPv6

Small networks178announce a single /24 (256 addresses) or less

Look up AS3269, the largest network in IT Look up any IP or ASN

Top 50 networks in Italy by IPv4 space

#ASNNetworkIPv4 addressesOf IT

1 AS3269 ASN-IBSNAZ Telecom Italia S.p.A. 19,699,456 38.00%

2 AS1267 ASN-WINDTRE WIND TRE S.P.A. 7,396,352 14.27%

3 AS30722 VODAFONE-IT-ASN Fastweb SpA 5,575,936 10.76%

4 AS12874 FASTWEB Fastweb SpA 3,562,752 6.87%

5 AS137 ASGARR Consortium GARR 2,761,728 5.33%

6 AS16232 ASN-TIM Telecom Italia S.p.A. 1,777,664 3.43%

7 AS8968 BT-Italia RETELIT-X S.R.L. 821,504 1.58%

8 AS3302 AS-RETELIT-IRIDEOS Retelit Digital Services S.p.A. 617,984 1.19%

9 AS24608 WINDTRE-AS WIND TRE S.P.A. 549,888 1.06%

10 AS8612 TISCALI-IT Smeraldo S.p.A. 525,056 1.01%

11 AS12663 VODAFONE-GROUP Fastweb SpA 453,376 0.87%

12 AS35612 NGI-AS EOLO S.p.A. 361,472 0.70%

13 AS210278 SKYIT-BB Sky Italia srl 328,704 0.63%

14 AS31034 ARUBA-ASN Aruba S.p.A. 282,624 0.55%

15 AS6762 SEABONE-NET TELECOM ITALIA SPARKLE S.p.A. 280,832 0.54%

16 AS20746 ASN-IDC Telecom Italia S.p.A. 213,248 0.41%

17 AS213677 FIBERCOP Fibercop S.p.A. 197,632 0.38%

18 AS29286 SKYLOGIC-AS SKYLOGIC S.P.A. 164,864 0.32%

19 AS3313 INET-AS RETELIT-X S.R.L. 158,208 0.31%

20 AS210218 OpenFiber-Italy Open Fiber S.P.A. 150,528 0.29%

21 AS198471 OPNET-AS Opnet Srl 143,104 0.28%

22 AS30848 IT-TWT-AS UNIDATA S.p.A. 122,880 0.24%

23 AS31263 MYNET-AS MYNET S.R.L. 101,888 0.20%

24 AS21056 ASN-WELCOMEITALIA Vianova S.p.A 98,816 0.19%

25 AS12797 ASN-ATLANET RETELIT-X S.R.L. 98,816 0.19%

26 AS5394 Unidata UNIDATA S.p.A. 91,904 0.18%

27 AS3242 ASN-ITNET REEVO S.P.A. 86,784 0.17%

28 AS5602 AS-IRIDEOS-KP Retelit Digital Services S.p.A. 86,784 0.17%

29 AS21176 ASN-DEBIS Engineering D.HUB S.p.A. 84,992 0.16%

30 AS2594 ASN-CSI CSI Piemonte 82,944 0.16%

31 AS31638 ASN-LEPIDA Lepida S.c.p.A. 80,384 0.16%

32 AS12637 SEEWEB SEEWEB s.r.l. 79,104 0.15%

33 AS21309 CASAWEB-AS HERABIT S.p.A. 78,848 0.15%

34 AS6882 RTRT-PEGASO Regione Toscana 73,728 0.14%

35 AS12551 AS-ENEL-IT ENEL S.p.A 72,192 0.14%

36 AS34606 ASN-BBBELL B.B.Bell SPA 71,424 0.14%

37 AS28929 ASDASD-AS ASDASD srl a socio unico 70,912 0.14%

38 AS49524 WOLNET Wolnet SRL 69,632 0.13%

39 AS20811 BRENNERCOM-AS Retelit Digital Services S.p.A. 68,096 0.13%

40 AS24771 IVECO-AS Iveco SpA 67,072 0.13%

41 AS210026 IT-MOD_AS Ministero della Difesa 66,560 0.13%

42 AS5535 Food And Agriculture Organization of the United Nations 66,304 0.13%

43 AS5609 ASN-CSELT Telecom Italia S.p.A. 65,536 0.13%

44 AS8217 ASN-ENI ENI S.p.A. 65,536 0.13%

45 AS20981 ASINNOVAPUGLIA InnovaPuglia SpA 65,536 0.13%

46 AS61315 SEDMULTITEL SED Multitel s.r.l. 53,248 0.10%

47 AS12445 SPIDERNET-AS A2A Smart City S.P.A 50,176 0.10%

48 AS34758 AXERA-ASN34758 Axera SpA 48,128 0.09%

49 AS12779 ITGATE IT.Gate S.p.A. 47,104 0.09%

50 AS28716 RETELIT-AS Retelit Digital Services S.p.A. 43,520 0.08%

Countries of similar size

#7 France #8 United Kingdom #9 Canada #11 Netherlands #12 Russia #13 Australia All countries

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources