AS206318 ASN-CASTTELECOM CAST-TELECOM SL

ASN-CASTTELECOM CAST-TELECOM SL · registered in Spain

IPv4 addresses3,0723 prefixes · <0.001% of announced IPv4

Rank in Spain#260largest network in ES by IPv4 space, of 926 · <0.01% of ES

Rank worldwide#17,961of 79,396 networks with IPv4

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

CountrySpain954 ASNs registered there

Open AS206318 in ASN lookup Look up an IP in this network (103.77.228.1) All networks in Spain

IPv4 prefixes

All 3 prefixes, in address order.

103.77.228.0/22
185.185.196.0/22
193.32.212.0/22

IPv6 prefixes

All 1 prefix.

2a0b:6380::/29

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AS207136#261 AUREA AUREA ENERGIA Y TELECOMUNICACIONES S.L.3,072

AS215691#262 HOSTEALO AP INTERACTIVE SOLUTIONS SL3,072

AS196816#263 NIXUS-AS NIXUS NETWORKS S.L.3,072

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