AS28999 SIPORTAL-AS Siportal S.r.l.

SIPORTAL-AS Siportal S.r.l. · registered in Italy

IPv4 addresses5,1202 prefixes · <0.001% of announced IPv4

Rank in Italy#223largest network in IT by IPv4 space, of 1,081 · <0.01% of IT

Rank worldwide#13,224of 79,396 networks with IPv4

IPv68 x /32 (524,288 x /48)1 prefixes

CountryItaly1,121 ASNs registered there

Open AS28999 in ASN lookup Look up an IP in this network (185.6.88.1) All networks in Italy

IPv4 prefixes

All 2 prefixes, in address order.

185.6.88.0/22
217.27.112.0/20

IPv6 prefixes

All 1 prefix.

2a03:4400::/29

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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