AS44143 A1SERBIA-AS A1 Srbija d.o.o. Beograd

A1SERBIA-AS A1 Srbija d.o.o. Beograd · registered in Serbia

IPv4 addresses22,52811 prefixes · <0.001% of announced IPv4

Rank in Serbia#12largest network in RS by IPv4 space, of 159 · 0.94% of RS

Rank worldwide#5,736of 79,396 networks with IPv4

IPv68 x /32 (524,288 x /48)3 prefixes

CountrySerbia161 ASNs registered there

Open AS44143 in ASN lookup Look up an IP in this network (37.19.104.1) All networks in Serbia

IPv4 prefixes

All 11 prefixes, in address order.

37.19.104.0/21
77.243.16.0/20
95.86.4.0/22
95.86.8.0/22
95.86.48.0/21
95.86.60.0/22
152.117.16.0/21
185.37.24.0/22
188.120.96.0/20
188.120.112.0/21
198.143.176.0/21

IPv6 prefixes

All 3 prefixes.

2a00:61c0::/31
2a00:61c2::/31
2a00:61c4::/30

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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