AS5609 ASN-CSELT Telecom Italia S.p.A.

ASN-CSELT Telecom Italia S.p.A. · registered in Italy

IPv4 addresses65,5361 prefixes · 0.002% of announced IPv4

Rank in Italy#43largest network in IT by IPv4 space, of 1,081 · 0.13% of IT

Rank worldwide#2,868of 79,396 networks with IPv4

IPv61 x /32 (65,536 x /48)17 prefixes

CountryItaly1,121 ASNs registered there

Open AS5609 in ASN lookup Look up an IP in this network (163.162.0.1) All networks in Italy

IPv4 prefixes

All 1 prefix, in address order.

163.162.0.0/16

IPv6 prefixes

All 17 prefixes.

2001:6b8::/36
2001:6b8:1000::/39
2001:6b8:1200::/43
2001:6b8:1220::/44
2001:6b8:1230::/46
2001:6b8:1234::/48
2001:6b8:1235::/48
2001:6b8:1236::/47
2001:6b8:1238::/45
2001:6b8:1240::/42
2001:6b8:1280::/41
2001:6b8:1300::/40
2001:6b8:1400::/38
2001:6b8:1800::/37
2001:6b8:2000::/35
2001:6b8:4000::/34
2001:6b8:8000::/33

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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