AS12551 AS-ENEL-IT ENEL S.p.A

AS-ENEL-IT ENEL S.p.A · registered in Italy

IPv4 addresses72,19235 prefixes · 0.002% of announced IPv4

Rank in Italy#35largest network in IT by IPv4 space, of 1,081 · 0.14% of IT

Rank worldwide#2,377of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryItaly1,121 ASNs registered there

Open AS12551 in ASN lookup Look up an IP in this network (146.133.0.1) All networks in Italy

IPv4 prefixes

All 35 prefixes, in address order.

146.133.0.0/23
146.133.2.0/23
146.133.4.0/22
146.133.8.0/21
146.133.16.0/22
146.133.20.0/22
146.133.24.0/22
146.133.28.0/23
146.133.30.0/23
146.133.32.0/19
146.133.64.0/22
146.133.68.0/24
146.133.69.0/24
146.133.70.0/23
146.133.72.0/21
146.133.80.0/20
146.133.96.0/24
146.133.97.0/24
146.133.98.0/23
146.133.100.0/22
146.133.104.0/21
146.133.112.0/21
146.133.120.0/22
146.133.125.0/24
146.133.126.0/24
146.133.128.0/19
146.133.240.0/24
158.47.0.0/22
158.47.4.0/24
158.47.6.0/23
158.47.8.0/23
158.47.14.0/23
158.47.16.0/20
158.47.32.0/19
158.47.64.0/18

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ASNNameIPv4 addresses

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

AS6882#34 RTRT-PEGASO Regione Toscana73,728

AS34606#36 ASN-BBBELL B.B.Bell SPA71,424

AS28929#37 ASDASD-AS ASDASD srl a socio unico70,912

AS49524#38 WOLNET Wolnet SRL69,632

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