AS21309 — CASAWEB-AS Via Molino Rosso 8 IMOLA BO ITALY

Network type: residential

AS21309 announces 12 IPv4 prefixes covering 78,848 addresses and 1 IPv6 prefixes.

About this network

CASAWEB-AS is operated by Acantho, a regional Italian internet service provider.

What it's used for

• The address space carries residential DSL access, evidenced by the reverse DNS record 188-125-119-254-dsl.dsl.ascotlc.com.
• The AS announces 78848 IPv4 addresses across 12 prefixes and maintains 51 observed neighbours, a ratio consistent with an access network aggregating local traffic.

Notable

• Registrants are predominantly HERABIT S.p.A., matching the registry holder, with one exception: 185.239.96.0/22 is registered to ADCGROUP Internal Infrastructure.
• The operator is known as Acantho, identified via PeeringDB, while the registry handle remains CASAWEB-AS and the legal entity is HERABIT S.p.A.
• The inventory consists of a mix of /18, /19, /20, /21, and /22 blocks, with the largest being 77.89.0.0/18 and 213.209.192.0/18.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 5.63.136.0/21
• 31.216.240.0/20
• 77.89.0.0/18
• 80.86.144.0/20
• 83.216.160.0/19
• 86.110.128.0/19
• 185.123.8.0/22
• 185.182.196.0/22
• 185.239.96.0/22
• 188.125.96.0/19
• 213.174.160.0/19
• 213.209.192.0/18
• 2a03:c380::/32

Upstream networks

• AS174 Cogent Communications, LLC
• AS9002 RETN Limited
• AS6939 Hurricane Electric LLC
• AS6762 TELECOM ITALIA SPARKLE S.p.A.
• AS8218 Zayo Infrastructure France SA
• AS24482 SG.GS
• AS57463 NetIX Communications JSC
• AS59919 Brainbox S.r.l.
• AS31543 myNet GmbH
• AS15830 Equinix (EMEA) Acquisition Enterprises B.V.

Downstream networks

• AS197807 Eos sistemi s.r.l.
• AS31495 HERABIT S.p.A.
• AS211102 Previnet S.p.A.
• AS214164 Interporto Padova S.p.A.
• AS49535 E-Mind Srl
• AS42933 Aeroporto G. Marconi di Bologna s.p.a.
• AS35514 GEOX S.P.A.
• AS15923 Logos S.P.A.
• AS207157 CAME S.P.A.
• AS8884 CRIF S.p.A.

Adjacent networks

• AS174 Cogent Communications, LLC
• AS9002 RETN Limited
• AS6939 Hurricane Electric LLC
• AS197807 Eos sistemi s.r.l.
• AS6762 TELECOM ITALIA SPARKLE S.p.A.
• AS59919 Brainbox S.r.l.
• AS57463 NetIX Communications JSC
• AS24482 SG.GS
• AS31495 HERABIT S.p.A.
• AS8218 Zayo Infrastructure France SA
• AS211102 Previnet S.p.A.
• AS214164 Interporto Padova S.p.A.
• AS49535 E-Mind Srl
• AS31543 myNet GmbH
• AS15830 Equinix (EMEA) Acquisition Enterprises B.V.
• AS42933 Aeroporto G. Marconi di Bologna s.p.a.
• AS35514 GEOX S.P.A.
• AS15923 Logos S.P.A.
• AS207157 CAME S.P.A.
• AS8884 CRIF S.p.A.

Internet exchanges

• Milan Internet Exchange — Milan, Italy