AS203964 x4TEL-AS 4Tel Telekomunikacije d.o.o.

x4TEL-AS 4Tel Telekomunikacije d.o.o. · registered in Croatia

IPv4 addresses8,96024 prefixes · <0.001% of announced IPv4

Rank in Croatia#14largest network in HR by IPv4 space, of 149 · 0.38% of HR

Rank worldwide#9,706of 79,396 networks with IPv4

IPv616 x /32 (1,048,576 x /48)2 prefixes

CountryCroatia151 ASNs registered there

Open AS203964 in ASN lookup Look up an IP in this network (45.39.40.1) All networks in Croatia

IPv4 prefixes

All 24 prefixes, in address order.

45.39.40.0/24
80.253.164.0/22
82.21.209.0/24
82.21.221.0/24
82.22.209.0/24
82.22.226.0/24
82.23.211.0/24
82.23.221.0/24
82.24.217.0/24
82.24.232.0/24
82.25.226.0/24
82.25.231.0/24
82.26.213.0/24
82.27.219.0/24
82.29.212.0/24
82.29.219.0/24
82.29.222.0/24
82.29.224.0/24
104.252.70.0/24
142.252.204.0/23
185.150.232.0/22
185.168.40.0/22
213.190.25.0/24
213.190.26.0/23

IPv6 prefixes

All 2 prefixes.

2a07:7400::/29
2a0b:e600::/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